If a cell has a relatively high energy need, you would expect it to have more mitochondria than a cell with a lower energy need.
What is mitochondria?Most eukaryotic creatures contain a mitochondrion, a double-membrane-bound organelle. Adenosine triphosphate (ATP), which is used as a source of chemical energy throughout the cell, is primarily produced by mitochondria through aerobic respiration. In the voluntary muscles of insects, they were found by Albert von Kölliker in 1857. In 1898, Carl Benda invented the name "mitochondrion." The phrase "powerhouse of the cell" was popularized by Philip Siekevitz in a 1957 essay of the same name, and has since gained widespread use to refer to the mitochondrion.
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The fact that the base of the basilar membrane responds best to high frequencies supports the ________ theory of hearing.
The fact that the base of the basilar membrane responds best to high frequencies supports the Place theory of hearing.
The place theory of hearing states that the different parts of the basilar membrane respond to sounds of different frequencies.
As mentioned, the base part of the basilar membrane responds best to high frequencies but the tip of the basilar membrane won't respond in the same way. the tip of the basilar membrane will respond best to sounds of low frequency.
It also states that the pitch of a sound is determined by the place of vibration of the membrane.
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EXPERIMENT: MASS OF GAS
Here is your goal for this lesson:
Write a report on the mass of gas
We often do not think of gas in terms of having mass. The atmosphere is something we live in and breathe. In this experiment, we will investigate whether gas does truly have mass.
Hypothesis: If gas does indeed have mass, then different volumes of it will have a different mass. This could be demonstrated by using a simple balance and comparing the two different volumes, captured by means of balloons.
Materials needed:
two balloons of the same size
meter stick
string
paper clips
Procedure:
1. Suspend the meter stick from the middle in such a way as to be able to move the string to balance. See the diagram below.
2. Attach each balloon to either end of the meter stick, making the apparatus balance.
3. Blow up each balloon to different volumes, thus measuring out different volumes of gas.
4. Attach the balloons as shown in the diagram below using the paper clips. Be careful to attach the balloons in the same place as where the apparatus balanced.
5. Answer the following questions in the writing space provided in this assignment.
Did the suspended balloons balance?
If they did not, which balloon tipped the scale down?
Did your results validate the hypothesis?
Give an explanation for your results, including a discussion of how the data collected either validated, or disproved the hypothesis.
The suspended balloons did not balance. The bigger balloon tipped the scale down. And yes, it validated the hypothesis that gas does have mass, as the bigger balloon weighed down the scale.
Gases have mass. Gas particle gaps are completely empty. Chemical reactions can produce gases as a byproduct. Under some circumstances, bonding between gas atoms is possible.
Loosely packed molecules can be found in gases. Gases have weight because the molecules that make them up have mass. Because of this, a balloon with air inside weighs more than one with none.
After combining the vinegar and baking soda, one of the paper bags will be "poured" with gas from the pitcher, which will cause the scale to tip toward that end even though nothing actually was poured into the bag. It is demonstrated by this that gas has mass and is heavier than oxygen.
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Based on what you have learned from your rankings in parts a and b, why is it generally hotter in summer than in winter?.
We feel hotter in summer than in winter because the temperature is generally higher than in winter.
What are seasons?There are three seasons on earth namely winter, summer, and rainy season. In the winter season, the temperature is cold and during summer the temperature is higher.
Timing and characteristic of season depend upon the location of the earth. The time of a year region experience season depends on it is northern hemisphere or southern hemisphere.
The southern hemispheres experiences winter while northern hemisphere experiences summer. The cycle of seasons is caused by earth's tilted towards the earth. The planet rotates around an axis.
Therefore, We feel hotter in summer than in winter because the temperature is generally higher than in winter.
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Polymers are formed by hydrolytic reactions of monomers.
true or false
The given statement was (false) , Polymers are not formed by hydrolytic reactions.
Hydrolysis process is defined as the process of breakdown of Polymers into monomers. The polymer separates into its two components as a result of the hydrolysis process.
If the constituents are unionised, a split water molecule gives one a hydrogen atom (H-) and the other a hydroxyl group (OH-). If they are ionised, one receives two hydrogen atoms and a positive charge, while the other receives an oxygen atom and a negative charge.
Polymers are mainly formed by two processes known as condensation and addition polymerisation.
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The tendency of water molecules to cling to another substance is called __________________
The tendency of water molecules to cling to another substance is called adhesion.
Imaging filling a bottle with water. When the bottle is filled to the very top, you slowly add a few more drops. You will notice that the water at the top of the bottle forms a dome-like structure before it spills out. This structure is due to the cohesive and adhesive properties of water. Cohesion is the ability of water molecules to stick to one another, and adhesion is the ability of water molecules to cling to other substances.
Water is more likely to cling to other polar substances, that is substances that bear a positive or negative charge. This is because as a polar substance, water molecules have a partial positive charge and a partial negative charge.
Adhesion plays an important role in many biological processes like the movement of water from the roots to the top of trees.
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The _____ are receptors in the retina that function especially well in low-light conditions and are everywhere in the retina except for the fovea.
The centrosome organizes the ____________ that facilitate movement of chromosomes during ____________ .
The centrosome organizes the microtubules that facilitate the movement of chromosomes during cell division.
Animal cells' primary organelles for arranging microtubules are called centrosomes. Two barrel-shaped microtubule clusters, known as "centrioles," plus a collection of proteins that aid in the formation of new microtubules make up centrosomes.
As the main microtubule-organizing center (MTOC) in animal cells, the centrosome controls interphase cell movement, adhesion, and polarity and aids mitotic spindle pole organization.
When a cell divides, the centrosomes assist. They keep track of the chromosomal count as the cell divides. Phagocytosis, also promote changes in the cell membrane's structure. It aids in the organization of the microtubules during mitosis, ensuring that the centrosomes are dispersed among all of the daughter cells.
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The cytoplasmic membrane of prokaryotic cells plays a crucial role in transforming energy. this means that the membrane is directly involved in __
The cytoplasmic membrane of prokaryotic cells plays a crucial role in transforming energy. this means that the membrane is directly involved in converting the energy of sunlight or food into ATP.
What is prokaryotic cell?A prokaryotic cell is a type of cell that does not have a true nucleus or membrane-bound organelles. Organisms within the domains Bacteria and Archaea are based on the prokaryotic cell, while all other forms of life are eukaryotic.
What are 3 examples of prokaryotic cells?Prokaryotes are single celled, microscopic entities. They neither have specialized organelles nor a prominent nucleus with a membrane. Examples of prokaryotes include cyanobacteria, E. coli, mycoplasma etc.
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Neurons have a very limited ability to divide after injury because most neurons lack which organelle(s)?
centrioles
Neurons have a very limited ability to divide after injury because most neurons lack with centrioles.
This is because centrioles function in cell division, the fact that neurons lack these organelles is consistent with the amitotic nature of the cell.
Role of centrioles:Animal cells' cytoplasm contains a pair of barrel-shaped organelles called centrioles that are close to the nuclear envelope. The skeletal framework of the cell, the microtubules, are organized by centrioles. They aid in identifying the locations of the cell's nucleus and other organelles.The centriole's main job is:A. emergence of spindle fibers.
B. creation of the nucleus.
C. the starting of cell division.
D. development of the cell plate.
What occurs in the absence of Centriole?Scientists have discovered that cells without centrioles exhibit a delay in spindle assembly and a higher rate of chromosomal instability. A faulty or asymmetric mitosis is produced, and apoptosis is also triggered.To learn more about centrioles visit:
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Although not completely proven, some researchers suggest that consumption of large amounts of caffeine can result in cancers of the bladder, ovaries, colon, and kidneys. True or false
Although not completely proven, it's true some researchers suggest that consumption of large amounts of caffeine can result in cancers of the bladder, ovaries, colon, and kidneys.
How caffeine effect body ?The body readily absorbs caffeine, and the short-term effects often manifest between five and thirty minutes after consumption. Increased breathing, heart rate, mental and physical vigor, as well as increased heart rate, are examples of these impacts. The duration of these effects varies from person to person and can reach 12 hours.
As little as 300 milligrams of caffeine, or about four cups of coffee, can raise your risk of experiencing adverse effects like nausea, anxiety, restlessness, and insomnia in adults. Caffeine misuse or excessive use in some individuals can also result in: Headaches. Irritability.
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What is an example of a single-celled organism? What do they have in common with humans?
Living things include single-celled creatures. There are two types of organisms: those composed of numerous cells and those composed of a single cell (single-celled organisms). Unicellular organisms are defined as organisms with a single cell. Single-celled organisms include the majority of protists and some fungi. Organisms with a single cell can exist independently. Amoeba and Paramecium are examples of single-celled organisms that perform their own bodily processes like respiration, excretion, digestion, and reproduction. These organisms have a variety of ways to obtain energy. Some cells allow energy to enter their bodies through their cell surface. A larger cell literally encircles a smaller cell or nutrient with its body before absorbing it, absorbing the nutrient into its body, and digesting the nutrient for energy.
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PLEASE HELP ASAP!!!
Consider the scenario.
Monarch butterflies are a migratory insect that can travel each year from the northeastern United States and Canada down to central Mexico to hibernate over winter from November to March. Scientists studying monarch butterflies noticed the number of wintering monarchs in Mexico was at its lowest in decades. By reading climate reports, scientists learned that United States and Canada had been experiencing abnormal drought and rainfall patterns. The scientists also learned that the droughts killed off many plants, including milkweed needed as food for monarch caterpillars.
Question
Which part of the scientific method is best illustrated by the scientists wondering why there are fewer monarch butterflies arriving in central Mexico?
A. collecting data from an experiment
B. communicating the results of a study
C. making an observation and asking a question
D. forming a new hypothesis
The scientific method that is involved in the study of why there are fewer monarch butterflies arriving in central Mexico is making an observation and asking a question. Option C
What is the scientific method?The scientific method is based on the fact that science is all about inquiry and the quest to obtain new information. There are several steps in the scientific method which includes; Observation, hypothesis, experiment, inference and conclusion.
Now, we can see that studies revealed that fewer monarch butterflies are arriving in central Mexico. We now want to find out which scientific method could be responsible for this.
We can then see that, the part of the scientific method that involves this is making an observation and asking a question.
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How much rotation of the body is required for the posterior axial oblique projection for acetablulm?
The posterior oblique (Judet method) for the acetabulum requires a 10- to 15-degree rotation of the body.
What is acetablulm ?The acetabulum is the hip joint's socket. Types of acetabular fractures are categorised based on pattern and severity. Acetabular fractures are distressing wounds that typically call for surgery. The cartilage that encircles your hip socket might cause complications like hip arthritis.
The three bones that make up our hip are together to form the acetabulum, which resembles a cup. The hip joint is created when the femoral head of the femur bone fits into this socket. We can walk, run, and move about freely thanks to these two anatomy components working together.Learn more about Acetabulum here:
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Which microorganism is often found associated symbiotically with the roots of bean plants?
a. cyanobacteria
b. rhizobium spp.
c. archaea
d. gram-positive bacteria
The microorganism Rhizobium spp is frequently seen living symbiotically with the roots of bean plants.
The best option is B.
Where does a microorganism belong?We are accompanied by microbes, which are incredibly tiny living things that are invisible to the unaided eye. They are organisms that are both terrestrial and avian. The human body is home to millions of these bacteria, often known as microorganisms. While certain bacteria cause disease in us, others are essential to our health.
What are microorganisms so important?For instance, the human body includes 10 bacteria for each and every human cell, and these microbes aid in the production of vitamin K, stimulate the growth of the immune system, and detoxify poisons. Of course, many of the items we enjoy, like bread, cheese, and wine, must be produced by microbes.
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Ou put some atoms together, and they share or trade some electrons. what just happened was:_____
a. a parton reaction.
b. a chemical reaction.
c. a proton reaction.
d. a quark reaction.
You put some atoms together, and they share or trade some electrons. This happens during (b) a chemical reaction.
Electrons are the subatomic particles. They along with protons and neutrons form an atom. The electrons can be found in free state or bound to the nucleus of an atom. The electrons are negatively charged particles. The charge that an electron holds is 1.60217663 × [tex]10^{-19}[/tex] coulombs.
A chemical reaction is the one where a substance called reactant undergoes some rearrangement in its molecular structure and results in the formation of another substance, called the product. There usually occurs the breakdown of old bonds and formation of new bonds in a chemical reaction.
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Which organisms would likely be the most difficult to kill if you were you to can your own food? group of answer choices
Endospore would have been most difficult to kill while canning one's own food.
Endospores are the reproductive structures that attain a dormant state due to unfavorable structures. They have a thick, tough outer layer which cannot be destroyed easily. This is the reason why they can be the most difficult to kill.
Canning of food is a method of preservation of food. The food is stored in air-tight containers in order to store them for a longer period of time. These containers are heated properly so that all the microorganisms present are inactivated or killed. Canning can be of two types: water bath canning and pressure canning.
The question is incomplete, the complete question is:
Which organisms would likely be the most difficult to kill if you were you to can your own food?
A. Streptococci
B. Endospores
C. Biofilms
D. Staphylococci
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The ______ route for water loss is based on a negative feedback for overall body water balance.
A. urinary
B. fecal
C. integumentary
D. respiratory
A potentially hazardous or __ food is capable of supporting the rapid growth of harmful microorganisms.
A potentially hazardous or part of milk products good is capable of supporting the rapid growth of harmful microorganisms.
Why potentially hazardous foods be cooked to proper temperature?Bacteria that cause food poisoning grow at temperatures between 45 degrees Fahrenheit and 120 degrees Fahrenheit .The cooling requirements limits the length of time that potentially hazardous food is in the temperature range at which harmful bacteria can grow.
Potentially hazardous food means any food which consists in whole or in part of milk or milk products,eggs, meat, poultry,rice , shellfish, edible crustaceans ,raw seed sprouts and other ingredients in a form capable of supporting rapid and progressive growth of microorganisms.
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During the isothermal heat rejection process of an ideal carnot cycle, the entropy of the working fluid:______.
The working fluid's entropy drops during the isothermal heat rejection phase of an ideal Carnot cycle.
What is entropy ?
The quantity of energy that cannot be used to perform work is measured by an object's entropy. The number of alternative arrangements that the atoms in a system can have is also measured by entropy. Entropy is a measure of uncertainty or unpredictability in this sense.
What is carnot cycle?
The term "Carnot cycle" refers to an ideal, reversible closed thermodynamic cycle in which the working substance undergoes the four operations of isothermal expansion to a desired point, adiabatic expansion to a desired point, isothermal compression, and adiabatic compression back to its initial state.
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left ventricular hypertrophy normal, concentric remodeling, eccentric hypertrophy, and concentric hypertrophy.
Left ventricular hypertrophy is an increase in left ventricular myocardial mass that is mainly caused by the increased work on the heart. It can be caused by anxiety disorder that increase plasma level.
There is two types of hypertrophy that is eccentric and concentric where the concentric hypertrophy is related to the increased in wall thickness left ventricular and eccentric is related to the dilatation of the left ventricular.
It increase the risk of serious health issues in heart. It have no symptoms and the life of the patient is nearly normal. Angiotensin converting enzymes (ACE) are the inhibitor of left ventricular hypertrophy.
Inhibitor is a substance that slows down or stop the chemical reaction or reduce the activity of chemical reactant and catalysts.
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The urinary bladder, urethra, and ureters are collectively known as the urinary ___________.
The urinary bladder, urethra, and ureters are collectively known as the urinary tract
The urinary tract is the body's drainage the system for the removing of urine, which is made up of the wastes and the extra fluid. For the normal urination to be occur, all body parts in the urinary tract also need to work together, and in the correct order. The urinary tract that includes two kidneys, two ureters, bladder, and a urethra.
infections also occur in Urinary tract which are caused by the microorganisms — usually the bacteria — that enter the urethra and in the bladder, that causing the inflammation and the infection. Though a UTI most of commonly happens in the urethra and in the bladder, bacteria can also be travel up the ureters and that infect your kidneys also,
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PLEASE HELP ASAPP. WILL GIVE BRAINLIEST AND 5 STAR RATIBG
Answer: mass
Explanation:
there is nothing about material to heat. mixture, depends, it has to be a specific situation. heat does contain mass though.
ASAP please please
The graphs below show the effect of light intensity on the rate of photosynthesis at different carbon dioxide concentrations.Explain what the graphs show.
The rate of photosynthesis rises as light intensity does (point B on the graph). Thus, there is a greater intake of carbon dioxide. This rise in carbon dioxide uptake is depicted on the graph.
What effect of light intensity on the rate of photosynthesis?As long as other variables are abundant, photosynthesis will proceed at a faster pace as light intensity rises. Another element will eventually become scarce as the rate rises.
Water and carbon dioxide are converted by photosynthetic pigments using light energy into carbohydrates and oxygen.
Greater starch reserves and enhanced auxin biosynthesis may result from leaves containing more non-structural carbohydrates due to increased photosynthesis.
Therefore, point B in graph indicates more carbon dioxide is absorbed for photosynthesis.
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Identify the different forms of carbohydrates.
a. disaccharide
b. polypeptide fatty acid
c. polysaccharide
d. monosaccharide
The classes of carbohydrates are:
monosaccharides disaccharidespolysaccharidesCorrect answers are A, C, D.
What are carbohydrates?Carbohydrates are biomolecules which are composed of carbon, hydrogen and oxygen, where the hydrogen and oxygen in the compounds are in a ratio of 2 : 1.
The classes of carbohydrates in include:
monosaccharides or simple sugars e.g. glucosedisaccharides - contains two simple sugars e.g. maltosepolysaccharides - contains monomers of simple sugars e.g. starchIn conclusion, carbohydrates are essential biomolecules.
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Even though they may be teratogenic, opioids were prescribed to _____ percent of pregnant women on medicaid.
Even though they may be teratogenic, opioids were prescribed to percent of pregnant women on medicaid.
Opioids are a group of chemicals that are naturally occurring in the opium poppy plant. They act on the brain to create a range of effects, including the numbing of pain with many of these drugs.
Opioids can be either legal street drugs like heroin or prescription prescriptions that are frequently referred to as painkillers.
Opioids, often known as narcotics, are different from over-the-counter pain relievers like aspirin and Tylenol despite the fact that they also reduce pain.
opiods research has been and continues to be essential in addressing a variety of current global aims and issues, including maintaining food, water, and energy security for a healthy population on a planet that is habitable.
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The development and spread of a new gene for antibiotic-resistance in a population of bacteria that are exposed to that antibiotic would mean that trait is a(n) _____.
The development and spread of a new gene for antibiotic resistance in a population of bacteria that are exposed to that antibiotic would mean that trait is a(n) adaptation.
In the field of biology, an adaptation can be described as a particular feature or characteristic that allows an organism to survive in an environment.
Organisms that can better adapt to changing conditions are more likely to survive and reproduce.
When a colony of bacteria incorporates a gene for resistance against a certain antibiotic, then this action is an example of an adaptation of the bacterial colony. The bacteria can now grow in that antibiotic medium because they have antibiotic resistance gene for it. This makes the bacterial colony more adaptable to survive in the antibiotic medium.
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From the big bang theory, after cooling the debris, allowed the formation of the following
Debris (Hydrogen and helium) from the big bang gravitationally clumped together, and frequently these clumps got big enough to start fusion in their centers and form stars.
What is big bang theory?
The Big Bang theory explains how the cosmos expanded from a highly dense and hot starting condition. The evolution of the observable cosmos from the earliest known times up to its later large-scale shape is explained by this prevalent cosmological model. A wide range of observable phenomena, such as the quantity of light elements, the cosmic microwave background (CMB) radiation, and large-scale structure, are all thoroughly explained by the model.
Eventually, the large gaseous balls fuse hydrogen into heavier elements, which causes them to become stars. The periodic table's iron is created when stars combine light elements to create heavier ones.
The remaining elements of the periodic table are created as a result of the stars exploding, producing white dwarfs that explode, or forming neutron stars that collide and explode. The remaining hydrogen gas is now "contaminated" by this other material, and some of it forms an accretion disk in which planets form when it compresses under gravity.
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Which would least likely be a cause of natural selection
Adaptation
Evolution
Overpopulation
Variation
Evolution is least likely be a cause of natural selection
What Is Natural Selection? In the modern biology, the natural selection is the process whereby the species which have the traits that enable them to the adapt in an environment which survive and also reproduce, and then they pass on their genes to the next generation. A classic example of the natural selection at work is the origin of the giraffes' long necks. The ancestors of the modern giraffes were the animals similar to deer or the antelope, with necks of the ordinary length. Evolution is the change in the heritable that characteristics of biological populations which over the successive generations. These characteristics are the be expressions of genes that are also passed on from parent to offspring during the reproduction.
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Dr. paivio studies the ways in which the endocrine system and the nervous system are similar. which conclusion might he draw?
He might draw the conclusion that,
By releasing chemicals known as hormones and neurotransmitters, respectively, as a form of communication, the endocrine and neurological systems both regulate, coordinate, and integrate many physiological processes and bodily activities. A stimulus activates the neurological and endocrine systems, which then send messages and produce responses.
The endocrine and neurological systems are different:
Endocrine glands secrete hormones that act for a much longer period of time than the neurological system's ability to produce a neural response. Hormone action moves more slowly than neuronal response. A nerve or neural impulse may move through the body almost instantly and in a matter of seconds.
While the neurological system employs electrical impulses to transfer signals across neurons for signaling pathways, the endocrine system uses chemical signals or hormones to accomplish so. The neuronal reactions are transient and reversible, whereas the hormonal impulses are permanent.
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What is the most prevalent form of an allele called?
a. neutral
b. normal
c. dominant
d. recessive
e. wild type
The most prevalent form of an allele called wild type.
So, the correct option is (e).
Natural allele refers to a type of gene that, when carried by an organism, has no effect on that organism's FITNESS to live and reproduce.An allele is one of two or more variations of a certain genomic location's DNA sequence. For each genomic region with such variation, an individual inherits two alleles, one from each parent. The person is homozygous for the allele if the two alleles are the same.A recessive allele is a form of genetic coding that, in the absence of a dominant allele, has no effect on phenotype.The wild type allele is the one that codes for the phenotype that predominates in a specific natural population.To learn more about allele.
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