What is the cell membrane, what is its function and structure, and how does it work?

Answers

Answer 1

Answer:

The cell membrane, also known as the plasma membrane, is a thin, semipermeable membrane that surrounds the cytoplasm of a cell and separates it from the external environment. Its main function is to control the movement of substances into and out of the cell, as well as to maintain the cell's internal environment. The cell membrane is composed of a phospholipid bilayer, with proteins and carbohydrates embedded in it.

The cell membrane works by having molecules move from an area of higher concentration to an area of lower concentration. This movement is caused by the molecules having kinetic energy, which causes them to move around randomly. As they move, the molecules spread out, causing the concentration of the molecules to decrease in the area they are moving away from and to increase in the area they are moving towards. The cell membrane is semipermeable, meaning that it allows certain molecules to pass through it, while blocking other molecules. The molecules that are allowed to pass through the cell membrane must be small enough, and have the right type of charge, in order for them to fit through the phospholipid bilayer.

Answer 2

Answer:

What is Cell membrane : A thin membrane that surrounds the protoplasm of every cell.

Function : It provides rigidity and protection to the cell against variations in the environment. It also gives a definite shape, size and support to the cell.

Structure: It is an outer covering of the other cells organelles of the cell.

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Related Questions

The Mule Deer Case: In 1906, President Theodore Roosevelt created the Grand Canyon National Game Preserve on the Kaibab Plateau in northern Arizona. Between 1907 and 1923, cattle (who was grazing the land) was greatly reduced, mule deer hunting was eliminated, and predators were killed. Over 800 cougars, 20 wolves (most had already been killed in the 1800s). and 7000 coyotes were trapped or shot. In response, the mule deer herd began to increase: by 1915, deer numbers were estimated at 25,000 50,000 by 1920; and 100,000 by 1923. (2 pts.) If the initial population of mule deer in 1906 was about 4000, graph the population growth between 1906 and 1923 and identify the type of growth curve. Explain the growth in mule deer populations in terms of carrying capacity after the creation of the preserve. > The initial population of Kaibab deer in 1906 was about 4000. In a preserve area of about 800,000 acres, the average deer density was one deer per 200 acres. Calculate the densities in 1015, 1920 and 1923? Graph it Predict what happened with the mule deer population after 1923 and explain the reasons for changels). B) Life table for the paine population on TWU cangpust. da u La Tua 6-18 1-2y 142 198 110 LI ..... Hy 58 1 27 4.Sy 5-69 5 Fill in the columns in the above table that help plot the survivorship and mortality curves. Use the explanations for calculations starting on pages 176-177 of your textbook. Plot the survivorship and mortality curves for this population based on the data in your table. Hand drawings of the graphs are not acceptable. Use Excel. C) Read the interaction scenarios below and decide whether the interaction is competition, commensalism, predation, parasitism, or mutualism. Mention which ones are symbiotic. (1.25 pts.) • Scenario A: You are camping in the meadow. A female mosquito smells you. She finds a piece of exposed skin, drills her proboscis through your skin to find a capillary, and sucks up your blood. . Fill in the columns in the above table that help plot the survivorship and mortality curves. Use the explanations for calculations starting on pages 176-177 of your textbook. Plot the survivorship and mortality curves for this population based on the data in your table. Hand drawings of the graphs are not acceptable. Use Excel C) Read the interaction scenarios below and decide whether the interaction is competition, commensalism, predation, parasitism, or mutualism. Mention which ones are symbiotic. (1.25 pts.) Scenario A: You are camping in the meadow. A female mosquito smells you. She finds a piece of exposed skin, drills her proboscis through your skin to find a capillary, and sucks up your blood Scenario B: The next day you notice some colorful flowers. A butterfly walks over a brightly blooming inflorescence. It finds nectar stored inside the flowers and suck it. In the process it gets pollen smeared on its body. When it is finished hunting for nectar. it flies to another flower of the same species to find more nectar. Some of the pollen gets scraped of onto the second flower. Scenario C A hawk soars over the meadow. Its sharp eyes spot a field mouse. The hawk drops into a steep dive and catches the mouse in its talons. Then it flies away. to feed the dead mouse to its nestlings Scenario D: On the edge of the meadow there is a large tree. Growing on the tree's bark is a circular gray-green lichen, about 6 inches in diameter. The lichen is using the tree for habitat. The trunk gets sun and the lichen isn't competing with other organisms for space. The tree hardly notices the lichen; it isn't eating the tree or taking resources from the tree. Scenario E: In the wetter part of the meadow there is standing water. In the shallow water, a cattail (a tall grassy plant) and a rush (another kind of grassy plant) are both growing. The cattail and the rush both prefer the same kind of habitat, both need sunlight, and both are sucking up nitrogen and other nutrients from the marsh mud. O 6 148 D Dashboard Calendar To Do Notifications Inbox

Answers

The deer density in 1923 was one deer per 8 acre. Pet capita rate of growth of deer population is influenced by carrying capacity (K).

Population distribution is the spatial arrangement of individuals of a given species in a particular area at a given time. They may be influenced by factors like resource availability, climate, topography, vegetation, etc. The growth of mule deer population in terms of carrying capacity can be explained with the help of logistic growth.

In logistic growth, the per capita rate of growth of a population gets smaller as the population approaches a maximum number influenced by the number of limited resources available. This rate is known as the carrying capacity, denoted by K. The initial growth in logistic growth is exponential, where this carrying capacity first increases.

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Which body system determines whether the body has excess water that must
be removed by the excretory system?
A. Endocrine system
OB. Circulatory system
OC. Digestive system
OD. Nervous system

Answers

Answer:

Nervous system

Explanation:

This is because the nervous system sends messages to the excretory system to release body waste from the body

Please help I dont understand this

One of the ions missing from this simulation is chloride (Cl-
) because it is not directly involved in
creating an action potential. Chloride ions’ purpose is to regulate resting membrane potential by
minimizing accidental neuron stimulation, thus triggering an action potential. Why would this
be important for the maintenance of neuron homeostasis?

Answers

Answer:

Chloride ions play a critical role in maintaining the homeostasis of neurons by regulating the resting membrane potential. By minimizing accidental stimulation, chloride ions help to prevent the initiation of an action potential unless it is necessary, thus preserving the normal functioning of the neuron. This regulation is important in maintaining the stability and proper functioning of the nervous system, ensuring that signals are transmitted only when necessary and in the correct manner. In summary, the presence of chloride ions helps to maintain the homeostasis of neurons by preventing unnecessary stimulation and ensuring proper signaling.

Explanation:

Chloride ions (Cl-) play a crucial role in the maintenance of neuron homeostasis by regulating the resting membrane potential of neurons.

What is the resting membrane potential?

The resting membrane potential is the electrical potential difference across the plasma membrane of a neuron when it is not transmitting a signal. It is maintained by the selective permeability of the membrane to ions such as potassium (K+) and chloride (Cl-).

Chloride ions move in and out of the neuron, helping to balance the concentration of positively charged ions like potassium and sodium (Na+). If chloride ions are not present, the resting membrane potential may become too positive, making it easier for accidental neuron stimulation to occur and leading to an action potential when it should not occur.

This can disrupt normal neural activity and lead to problems with neuron function and communication. Therefore, the presence of chloride ions is important for the proper regulation of resting membrane potential and maintenance of neuron homeostasis.

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A cross was carried out between pure breed tall pea plant with pure dwarf pea plant and F¹ progeny was obtained

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Answer:

This is an example of a genetic cross in biology, specifically a monohybrid cross. The F1 progeny are the offspring of the cross between the purebred tall and purebred dwarf pea plants, and they exhibit a phenotype (observable physical characteristics) that is a combination of the traits of both parents. This type of cross allows for the examination of dominant and recessive traits, as well as the study of inheritance patterns.

Explanation:

Answer: A cross was carried out between pure breed tall pea plants with pure dwarf pea plants and F¹ progeny is obtained.

Explanation:

When tall plants were crossed with the dwarf pea plants in Mendel’s experiment, then in the first generation i.e. F1 progeny, only tall plants were obtained and no dwarf plant was obtained.

In F2 progeny, there were both tall and dwarf pea plants. The ratio of dwarf and pea plants was found to be 3:2.

In F2 progeny, there were both tall and dwarf pea plants. The ratio of dwarf and pea plants was found to be 3:2 which confirmed that in F2 progeny, both the characteristics were inherited and the tall character of the pea plant was found to be dominative and dwarf to be recessive. This was the law of segregation which says that when plants of different traits were crossed, then in the first progeny only the dominant character was observed whereas, in the F2 progeny, both dominant and recessive traits were obtained.

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What is the final product of the photosynthesis process?

Answers

Answer:

Glucose (C6H12O6) and oxygen are the end results of the photosynthesis process (O2). The process of turning carbon dioxide (CO2) and water (H2O) into glucose and oxygen is known as photosynthesis. During this process, pigments in the chloroplasts of plant cells absorb light energy. While the oxygen is discharged into the environment, the glucose created during photosynthesis is utilised by the plant as a source of energy.

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What must students use when summarizing an informational text? select 3 options. A casual toneinformal languageacademic languagean objective, formal tonea variety of sentence types.

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When summarizing an informational text, students should use:an objective, formal tone, academic language, a variety of sentence types.

1) an objective, formal tone, as the purpose is to provide a concise and impartial overview of the text; 2) academic language, which is appropriate for a scholarly or educational setting; and 3) a variety of sentence types, as this helps to maintain the reader's interest and convey information effectively. Using a casual tone or informal language is not appropriate when summarizing informational texts, as this can detract from the credibility and professionalism of the summary. By using these three elements, students can effectively summarize informational texts in a clear, concise, and professional manner.

Question: What must students use when summarizing an informational text? Check all that apply.

Academic language

An objective, formal tone

A variety of sentence types

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Which experience led an engineer to invent Velcro?
O A. Planting seeds in his flower garden
о B. Finding burrs stuck to his dog's fur
O C. Watching astronauts in space on TV
O D. Identifying wolves by individual howls

Answers

The experience that led an engineer to invent Velcro Finding burrs stuck to his dog's fur

What is Velcro?

The brand name of a fastening used in clothes is Velcro. Less frequently used names for this widely used fastener are hook-and-loop fasteners. These closures can be seen on pockets, sneakers, and other clothing items. Touch and close flaps with Hook-and-Loop fasteners are a hallmark of our workplace trousers.

Woven tapes are commonly made from one or more nylon, polyester, and Nomex (a flame-resistant meta-aramid material developed in the early 1960s by DuPont). Each pair has a hook tape and a loop tape with loops made of the same fiber as the woven tape.

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Explain the life cycle of plasmodium species?​

Answers

Answer:

Explanation:

life cycle of plasmodium species

What stage of meiosis is Mendel's law of segregation?

Answers

Mendel's law of segregation is in the phase anaphase of meiosis.

Anaphases I and II of meiosis are where Mendel's Segregation law takes place. The homologous chromosomes are sorted into two daughter nuclei with their different versions of each gene during this stage of the first meiotic division.

The first division of meiosis, during which the homologous chromosomes with their unique versions of each gene are divided into daughter nuclei, serves as the physical basis for Mendel's law of segregation. During meiosis, the two different alleles for a single gene segregate as the chromosomes divide into several gametes, resulting in each gamete acquiring one of the two alleles.

In Mendel's experiments, meiosis-induced segregation and independent assortment in the F1 generation result in the F2 phenotypic ratios that Mendel observed.

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Which system is shown in the diagram on page 53?

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The system shown in the diagram above is a blood circulation system.

What is a blood circulation system?

The blood circulation system, also known as the cardiovascular system, is a complex network of blood vessels and organs that work together to transport oxygen, nutrients, hormones, and other vital substances to the cells and tissues of the body. The main components of the blood circulation system are the heart, blood vessels (arteries, veins, and capillaries), and blood.

The heart acts as a pump, continuously contracting and relaxing to circulate blood throughout the body. Blood is pumped from the heart through the arteries, which carry oxygenated blood to the tissues and organs. After the blood delivers oxygen and nutrients, it returns to the heart through the veins, which carry deoxygenated blood back to the heart to be oxygenated again. The exchange of oxygen and nutrients between the blood and the tissues takes place in the tiny blood vessels called capillaries.

The blood circulation system is vital for maintaining the health and function of the body, as it delivers oxygen and nutrients to cells, removes waste and carbon dioxide, and helps to regulate body temperature and maintain fluid balance. Dysfunction of the blood circulation system can lead to various health problems, such as heart disease, stroke, and cardiovascular disease.

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Teddy mixed 3.0 moles of sodium hydroxide and 6.0 moles of ethanoic acid. did he make a buffer solution? explain your answer using a blacked equation.

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Since hydrochloric acid and sodium hydroxide neutralize each other, the pH of the resultant solution is 7, and NaCl is created as a resultant. It is created by combining a strong base (NaOH) and a strong acid (HCl). A weak acid or basic, as well as its salt, should be used to make the buffer solution. There is no buffer solution that can be made by combining sodium chloride with water. As a result, sodium chloride and water cannot be utilized to create a buffer.

[tex]NaOH(aq) + HCl(aq)\\[/tex][tex]NaCl(aq) + H2O(l)[/tex]

A buffer solution can be made by combining a weak acid solution with a solution of salts of its conjugate base.

Both an acid and a base must be present for a buffer to be able to neutralize both acid and base while maintaining the pH of the solution constant. A weak acid can neutralize bases in a buffer, while a conjugate base can neutralize acids.

To guarantee that there is an adequate conjugate base in the solution, a salt solution of the conjugate base must be added directly. Weak acids do not dissociate sufficiently to provide a sufficient conjugate base in the solution.

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Which of the following materials are NOT used in the disk diffusion method? A. Petri dish filled with nutrient -rich agar B. Filter paper discs impregnated with antibiotics C. Ruler to measure zones of inhibition D. Unknown liquid bacterial culture

Answers

All of the above mentioned are required in the disk diffusion method. So, the correct option is E.

What is Disk Diffusion method?

Disk diffusion test is defined as a culture-based microbiology assay that is used in clinical and drug discovery laboratories. The assay is used in clinical laboratories to determine the susceptibility of bacteria isolated from patient infections to clinically approved antibiotics.

This method requires a Petri dish filled with nutrient-enriched agar, filter paper discs impregnated with antibiotics, rulers to measure areas of blockage, and an unknown liquid bacterial culture. The agar well diffusion method is commonly used to evaluate the antimicrobial activity of plant or microbial extracts.

Thus, all of the above mentioned are required in the disk diffusion method. So, the correct option is E.

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Your question is incomplete, most probably the complete question is :

Which of the following materials are NOT used in the disk diffusion method?

A. Petri dish filled with nutrient -rich agar

B. Filter paper discs impregnated with antibiotics

C. Ruler to measure zones of inhibition

D. Unknown liquid bacterial culture

E. None of the above

A grass with elongated tillers would likely regrow from __________________ if trimmed near grounf level
a. Basal buds
b. Axillary buds
c. horizontal roots
d. Intact growing points

Answers

A grass with elongated tillers would likely regrow from basal buds if trimmed near ground level.

What are basal buds?

Basal buds are small growth points located at the base of a plant's stem near the soil surface. They have the potential to produce new shoots and leaves, and are an important factor in the regrowth and survival of many herbaceous plants.

When a plant is trimmed, cut back, or damaged, the basal buds can activate and produce new growth, allowing the plant to regenerate and continue to grow. This characteristic makes basal buds a valuable adaptation for many grasses and other plants that face regular disturbances, such as mowing or grazing, in their natural habitats.

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Which is the first step that geologists must do to compare rock layers at distant locations?

Answers

The first step that geologists must do to compare rock layers at distant locations is to collect samples from each location. Geologists must then take the samples back to their laboratory to analyze them using various methods, such as looking for fossils, measuring the thickness of each layer, and identifying the type of rocks. By comparing the samples from different locations, geologists can gain a better understanding of the geological history of each area, as well as any changes that have occurred over time.

Answer:

compare a layer at one location to layers at other locations

Explanation: took the quiz

A student is investigating genetics by performing crosses between fruit flies. In their first cross, they select a male with the genotype NEe and cross it with a NNee female.
• N- Normal Wings
• n - Vestigial Wings
• E - Red Eyes
• e - Sepia Eyes
What percentage (or fraction) of the offspring would you expect to have vestigial wings and sepia eyes? Be sure to show your work for full credit.

Answers

The percentage (or fraction) of the offspring that we would expect to have vestigial wings and sepia eyes is 0% and 25%.

What are vestigial wings?

Vestigial wings are an example of vestigial organs which are present in certain insects such as fruit flies, but does not help them to fly.

To answer the given question, we can use the principles of Mendelian genetics and the Punnett square.

The genotypes of the parents:

Male (NnEe): Nn (normal wings) and Ee (red eyes)

Female (NNee): NN (normal wings) and ee (sepia eyes)

The probability of any offspring having the nn genotype (i.e., vestigial wings) is,

                       1/2 × 0 = 0.

The probability of any offspring having the ee genotype (i.e., sepia eyes) is,

                      1/2 × 1/2 = 1/4.

In summary, we would expect 0% (or none) of the offspring to have vestigial wings and sepia eyes, but we would expect 25% (or 1/4) of the offspring to have normal wings and sepia eyes.

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Using same information about Hemophilia , cross a woman whose blood clots normally with a man has hemophilia . Show genotypic and phenotypic percentages of the generation .

Answers

Normal-blooded women and men with hemophilia produce offspring with a percentage of 50% carrier girls (XᴴXʰ) and 50% normal boys (XᴴY).

Determining the percentage of offspring genotypes

To find the genotype of the offspring, first determine the genotype of the parents. From the data in the question, genotypes can be made as follows:

Normal blood woman = XᴴXᴴHemophiliac man = XʰY

After the genotype is found, then cross the genotype:

Mother × Father

XᴴXᴴ × XʰY

Xᴴ × Xʰ, Y

--> Xᴴ × Xʰ = XᴴXʰ (carrier woman)

--> Xᴴ × Y = XᴴY (normal man)

From the results of the cross above, two offspring were produced, namely a carrier female and a normal male. So it can be concluded that the percentage of offspring is 50% carrier women and 50% normal men.

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When the ventricles are relaxed, the ______ are loose and there is no resistance to the flow of blood from atrium to ventricle.

Answers

When the ventricles are relaxed, the atrioventricular (AV) valves are loose and there is no resistance to the flow of blood from atrium to ventricle.

The AV valves, also known as the mitral and tricuspid valves, are located between the atria and ventricles of the heart. These valves open to allow blood to flow from the atria into the ventricles during the diastole phase of the cardiac cycle, when the ventricles are relaxed and the atria contract to push blood into the ventricles. The AV valves are supported by chordae tendineae and papillary muscles, which prevent the valves from flipping back into the atria during ventricular contraction (systole). However, when the ventricles are relaxed, the chordae tendineae and papillary muscles also relax, allowing the AV valves to open and blood to flow from the atria to the ventricles without any resistance.

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Label the diagram
Transcription and Translation (Protein Synthesis)

Answers

Answer:

1-3 is transcription while 4-8 is translation.

Explanation:

The labeling of the diagram is as follows:

1: DNA. 2: mRNA.3: Codon.4: tRNA. 5: Anticodon.6: Amino acid.7: Ribosome. 8: Protein.

What is Protein synthesis?

Protein synthesis may be characterized as a type of biological process through which amino acids are sequentially arranged in large numbers and form a specific functional protein through the involvement of rRNA, tRNA, mRNA, and numerous enzymes.

When it comes to the process of protein synthesis, there are two steps, i.e. Transcription, and translation. Transcription involves the conversion of DNA into mRNA within the nucleus of the cell. While translation involves the conversion of mRNA into a functional protein. This step takes place in the cytoplasm of the cell.

Therefore, the labeling of the diagram is well mentioned above.

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If left alone, vines can eventually ‘choke’ a tree from getting the sunlight it needs to survive. What is the best description for this relationship?

A. Consumer - consumer
B. Producer - Consumer
C. Predator - Prey
D. Parasite - Host

Answers

Answer: D. Parasite - Host

Explanation:

The vines are taking the nutrients away from the tree, but not necessarily consuming the tree

Which phrase describes an example of homeostasis?
A. Maintenance of a healthy blood pressure
B. Exposure of skin to harmful rays
C. Overproduction of white blood cells
D. Loss of blood due to an injury

Answers

A maintenance of a healthy blood pressure

Homeostasis is the process of our body maintaining its optimal levels

During which step of aerobic cellular respiration is carbon dioxide produced?

Answers

the Krebs cycle
Answer and Explanation: Most of the carbon dioxide made during cellular respiration is produced during the citric acid cycle (also known as the Krebs cycle and the TCA cycle). The Krebs cycle is the second phase of cellular respiration.

impacts of invasive species impacts the carbon cycle? and how?

Answers

Answer:

Explanation:

Invasive plants tend to deplete soil health in grasslands by reducing biodiversity and eliminating native species. The shift towards an invasive plant monoculture is accomplished through a variety of strategies including competition for soil moisture, changing soil chemistry, shading and space.

it releases more carbon dioxide into the atmosphere than native plants, according to new research in Science.

What relationship can be determined from the following information: . The radioactive isotope iodine 131 has a half-life of 8.1 days and emits 0.8 MeV (milli-electronvolts) of energy . The radioactive isotope phosphorus 32 has a half-life of 14.3 days and emits 1.7 MeV of energy . The radioactive isotope phosphorus 33 has a half-ife of 25.5 days and emits 0.25 MeV of energy . The radioactive isotope sulfur 35 has a half-lfe of 875 days and emits 0.2 MeV of energy Multiple Choice O The longer the half-lIfe, the more energy emitted by the particles O The longer the hif ife the les energy emited by the porticles O Redotoopes of he same elemen must enst the same amountof energy in their emissions of the same element must emit the same amount of energy in their emissions and decay at the same rate. O Adjusted for time, radioisotopes emit the same amount of energy in their emissions O Energy and half-life are not directly related.

Answers

Option E: energy and half-life are not directly related, is the relationship determined from the given information about the radioactive isotope.

Half-life is the amount of time required by a nucleus if a radioactive isotope to lose half of its radioactivity. Each radioactive isotope has its own particular half-life that cannot be altered because of external and alternating factors like those of quantity and form of the material.

A radioactive substance is highly unstable and thus loses its energy by decaying. This means that the energy lost is directly proportional to the amount of the substance present. But energy of a radioactive substance is independent of it's half-life of decaying. This means that option E is the correct choice.

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Select the type of adjective needed to complete this sentence. The Empire State Building is one of the ________ structures in the city, but One World Trade Center is taller.​

Answers

The empire state buildings is one of the biggest structures in the city, but one World Trade Center is taller.

The Empire State Building is one of the superlative structures in the city, but One World Trade Center is taller.​

What is an adjective?

An adjective is a word that modifies or describes a noun or pronoun, providing additional information about its qualities or attributes. Adjectives can describe a wide range of characteristics, including size, shape, color, texture, and emotions, among others.

They are an important part of the English language and are used to make writing more interesting, vivid, and specific. Adjectives can be used in a variety of ways, including before a noun ("the blue sky"), after a linking verb ("the sky is blue"), or as part of a noun phrase ("the old, creaky door"). They are a fundamental part of building descriptive and engaging sentences in English.

The sentence is comparing the height of two buildings, and stating that One World Trade Center is taller than the Empire State Building. To describe the Empire State Building as one of the structures in the city, we need a superlative adjective to emphasize that it is among the tallest buildings. Therefore, the missing word is "tallest" or "taller", depending on the context.

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which organ system are you using when you feel your heart beating?

Answers

Answer:

circulatory

Explanation:

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You are using your circulatory system

How did the rise of discriminatory groups affect the failure of reconstruction in south carolina?.

Answers

The advancements gained in South Carolina during Reconstruction were hampered by the emergence of hate groups like the Ku Klux Klan.

The development of hate groups like the Ku Klux Klan in South Carolina contributed significantly to Reconstruction's defeat. Black Americans were prevented from exercising their newly acquired political and social rights, such as voting and running for office, by these groups via the use of violence and intimidation. They also aimed to reinstate the previous social structure and uphold white supremacy. The ineffectiveness of the federal government in enforcing Reconstruction laws and safeguarding Black Americans from violent retaliation gave these groups more power and ultimately led to the breakdown of Reconstruction in South Carolina and other Southern states.

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What is the temperature danger zone ? What is its significance in food preparation ?​

Answers

Answer: The danger zone is typically between 40°F (4°C) and 140°F (60°C).  The temperature danger zone refers to the temperature range in which bacteria can multiply rapidly on food.

Explanation:  The significance of the temperature danger zone in food preparation is that it represents the conditions in which bacteria can grow and cause foodborne illnesses.  When food is held at temperatures within this range, bacteria can multiply at a rapid rate, increasing the risk of food contamination and the potential for foodborne illnesses.

Proper cooking and reheating temperatures are essential to kill harmful bacteria in food.  Cooking foods to their recommended internal temperatures helps ensure that bacteria are destroyed and the food is safe to eat.

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Which of the following WAS NOT an impact of the crusades?
A. Change in culture in Europe
B. End of the Roman Empire
C. Monarchs grew more powerful
D. Many Christians were killed or badly injured

Answers

Answer:

monarchs grew in power.

1. Form a Hypothesis Would this therapy work if mRNA were replaced with other types of
RNA, such as ribosomal RNA (rRNA) or transfer RNA (tRNA)? Use evidence to support
your hypothesis.
NOTEBOOK

Answers

This therapy work if mRNA were replaced with other types of RNA, such as ribosomal RNA (rRNA) or transfer RNA (tRNA), nRNA (nuclear RNA)

Where the mRNA is found?

mRNA is found in the cytoplasm. It is transcribed from DNA and it is translated to produce protein molecules. tRNA or the transfer RNA carries amino acids to the mRNA.

tRNA has an anticodon loop that base pairs with the codon of mRNA and recruits the correct amino acid for the respective codon. rRNA or  ribosomal RNA is found in the nucleus associated with ribosomes. rRNA helps in the assembly of ribosomes during protein synthesis in the cell.

Therefore, This therapy work if mRNA were replaced with other types of RNA, such as ribosomal RNA (rRNA) or transfer RNA (tRNA), nRNA (nuclear RNA)

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The scientist know know exactly the earth formed

A) No answer text provided

B) No answer text provided

C) False

D) True

Answers

Answer:

False

Explanation:

Earth has always existed, but scientists don't know exactly when. They believe that Earth formed around 4.5 billion years ago, but they aren't sure where it came from.Follow=Follow

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False, scientists assume earth was here before us and they dont have the technology or any way to know how the earth was formed
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7. Find the value of w in the regular heptagonwhose interior angle has a measure of(w + 8). Round your answer to the nearesthundredth. prapti, a student from india, is well aware of her distinctive status as an international student at her university in the united states. this best illustrates a sense of who is the designated survivor state of the union 2023 ___migration starts with I and the word___helps us remember that____ means which is when individuals move____ a population Which of the following port states are stable states used when STP has completed convergence? (Choose two answers.)a. Blockingb. Forwardingc. Listeningd. Learninge. Discarding Edward and his little brother made upa game using coins. They flip the coinstowards a cup and receive points forevery one that makes it in. Edwardstarts with 20 points, and his littlebrother starts with 18 points. Edwardgets 2 points for every successfulshot, and his brother, since he isyounger, gets 3 points for eachsuccessful shot. Eventually, thebrothers will have a tied score in thegame. How many additional shots willeach brother have made? How manypoints will they both have?Edward and his brother will have eachmade ________shots, for a tied scoreof ________ A car manufacturer determines that its profit P in pesos can be modeled by the function P (x)=x3+5x2+3x+1,where x represent the number of cars sold. what is the profit when x=10? Vicky Ruiz is a Chicana feminist writer who published in 2004 the article entitled, "Morena/o, blanca/o y caf con leche: Racial Constructions in Chicana/o Historiography." One can assume that Ruiz's motivation in this piece of writing is:O To answer the question, "who are you?" Meaning, who is the Chicana/o?O To explain the identity of Mexicans. The racial history of Chicanos in the 1970s. No answer text provided. how many member countries does INTERPOL have? 5. There are two boxes in a classroom. Thefirst box has a drawing of a long, thin,red object on the outside. Inside it are redpencils, red straws, and red markers. Thesecond box has a drawing of a blue circleon the outside. Which objects would mostlikely be found in the second box?A blue shoes and blue papersB blue golf balls and red CDsblue marbles and blue platesD blue cups and blue notebooks What is inferencing?Question 1 options:Predicting what will happen later on in a storyThe summary of the main events of the storyA conclusion or opinion that is formed because of known facts or text evidenceThe solution at the end of a story - also known as a resolutionHelp please!! this photograph is from the oshiwara river in mumbai, india. what would be the most likely impact from this type of pollution? what theory originated with the eleventh-century church theologian peter abelard? Which Greek city-states fought Persia? Convert 25.44 g of calcium oxide to moles. a dome shaped surface that articulates with the head of the radius is definiton of what? Thor looked 13 websites every 39 hours. At that rate how many would he look at in 6 hours which literary element is most present when antony speaks the following lines about cassius? fear him not, caesar; he's not dangerous. he is a noble roman, and well given. The width of a rectangle is 35 of a foot and the length is 8 feet. What is the area? Responses A 340 ft2 3 40 ft 2 B 445 ft2 4 4 5 ft 2 C 835 ft2 8 3 5 ft 2 D 725 which of the following conditions does not contribute to greater gas ideality? group of answer choices lower system temperatures larger system volumes smaller gas molecule sizes smaller system pressures