A mutation that increases survival and reproduction may confer a beneficial trait to a population of organisms, and eventually lead to evolution.
In the field of biology, a mutation can be described as a change that arises in the DNA of an organism.
There are numerous reasons for a mutation to occur such as errors during the DNA replication, environmental factors, viral factors etc.
A mutation is not always bad. Sometimes, a mutation can provide an organism with a better trait. A mutation that increases the survival rate or reproduction rate of an organism is considered to be beneficial. Such a mutation when passed on to offspring can lead to evolution over a course of time. In this way, a mutation can result in a beneficial evolutionary process.
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For soap molecules to remove and dissolve oil in water, what molecular features are needed?
Soap needs to possess two distinct characteristics in order to remove dissolved oil from water. It must have a charged and/or positive end at a non-polar end, I'm sorry. Each pin-shaped molecule that makes up soap has a hydrophilic head that easily forms bonds with water and a hydrophobic tail that avoids water and favors forming bonds with fats and oils.
Because it draws water, the sodium or potassium end of the chain is hydrophilic. Soap's cleansing abilities come from its distinctive structure. When your hands are unclean, it's typically because oils have drawn dirt particles to them, making them stick to your hands.
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An earthquake decimates a ground-squirrel population. The surviving population happens to have broader stripes on average than the initial population. If broadness of stripes is genetically determined, what effect has the ground-squirrel population experienced during the earthquake?.
A Bottleneck effect has the ground-squirrel population experienced during the earthquake,
Bottleneck Effect- The bottleneck effect describes how a population's size is first decreased and then increased and how this changes how genetic diversity is distributed among its members.
Population- A population is the total number of organisms associated with the same species that really are present in a given location at the same time and have the potential to interbreed. Individuals need to be capable of reproducing with any other population members and have fruitful children for interbreeding to happen.
Species- A collection of creatures that can breed with each other in nature and have healthy offspring is referred to as a biological species.
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The autonomic nervous system is involved in controlling what effectors?
a) exocrine glands
b) skeletal muscles
c) cardiac muscle
d) smooth muscle
e) endocrine glands
The autonomic nervous system is involved in controlling a, c, d, e.
what is the Autonomic nervous system?
The peripheral nervous system's autonomic nervous system (ANS) is in charge of regulating critical processes like digestion, breathing, and heartbeat. In the acute stress response, it collaborates with the endocrine system to get the body ready for fight or flight.
Between the central nervous system and the internal organs, the autonomic nervous system acts as a relay. It regulates the exocrine and endocrine glands, smooth muscle, the heart, the lungs, and the heart. These organs are mostly under the autonomic nervous system's control, which is unconscious.
Hence from the above information, we get to understand that ANS helps to control systems, not in our control hence it will regulate all the given options except skeletal muscles as they are under control.
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Herbivores must digest cellulose, yet they lack the enzyme cellulase required for the job. How is this challenge overcome?
The answer to the question is Microbes with the ability to breakdown cellulose live in the digestive system.
What is digestive system?The digestive system of the human body is made up of the gastrointestinal tract and additional digestive organs. In order for food to be absorbed and assimilate into the body, it must first be broken down into smaller and smaller components during digestion. Cephalic, gastric, and intestinal phases make up the three stages of the digestive process. Peristalsis is the term used to describe the rhythmic contraction of muscles that starts in the esophagus and travels down the stomach wall and the rest of the gastrointestinal tract.
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Bacterial endospores are protected from chemicals and various lytic enzymes due to the presence of the spore layer called the?
Bacterial endospores are protected from chemicals and various lytic enzymes due to the presence of the spore layer called the Coat
What is Endospores ?Spores known as endospores are produced inside of cells, primarily in bacteria. These spores are produced by vegetative or mother cells of bacteria called sporangia. Bacteria are protected from harmful environmental factors such nutritional shortage (carbon and nitrogen) and overcrowding by endospores.
Endospores can develop in a variety of locations within the vegetative cell. They could be terminal, central, or subterminal. There are central endospores in the vegetative cell's centre. Towards the conclusion of the vegetative cell are the terminal endospores.Endo means "inside," hence the name "endospore" suggests a spore or seed-like structure, yet it is not a true spore (i.e., not an offspring).Learn more about Endospores here:
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The type of exocrine gland in which the entire cell disintegrates, liberating any accumulated products, is the __________ gland.
The _________ gland is a specific kind of exocrine gland in which the entire cell breaks down, releasing any stored products.
What is exocrine gland?
A gland that produces and releases bodily fluids such saliva, perspiration, tears, milk, and digestive juices through a duct or other orifice to a body surface. Examples are - salivary glands, sweat glands, mammary glands, etc.
Holocrine gland cells disintegrate, liberating any accumulated products.
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The lowest salinity in the ocean occurs near the equator, where precipitation exceeds evaporation and the ________ biome is located?
desert
The lowest salinity in the ocean occurs near the equator, where precipitation exceeds evaporation and the desert biome is located
Water is lost by evaporation, which makes the remaining water saltier.precipitation ( which adds fresh water, thereby diluting the seawater and making it less salty)fresh (river) water influx ( which makes the seawater freezes, salts are excluded from the ice, leaving the unfrozen seawater saltier)the sea ice freezing and melting. (Salts are left out of the ice when seawater freezes, making the unfrozen seawater saltier.)Salinity is high where the world's great deserts are located. In certain regions, both on land and at sea, evaporation outpaces precipitation. Surface salinity surpasses the typical range in a confined sea, such as the Mediterranean, where there is little input of fresh water.Near the equator, there is less evaporation due to high precipitation and cold water rising from the deep sea and moving westward in the tropical eastern pacific and eastern Atlantic oceans.To learn more about biomes visit:
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During which event of hemostasis do clotting factors (procoagulants) assist with the transformation of blood from a liquid to a gel?
coagulation stage
During coagulation stage of hemostasis do clotting factors (procoagulants) assist with the transformation of blood from a liquid to a gel.
Blood clots are created when blood coagulates, or turns from a liquid to a gel. Hemostasis, the halting of blood loss from a damaged vessel, may ensue, followed by repair.Platelets are directed to the location of the damage, while normal blood flow is kept in the uninjured parts, limiting coagulation to the affected tissue.Platelet activation, adhesion, and aggregation as well as fibrin deposition and maturation are all components of the coagulation mechanism.What are the two fundamental steps in the coagulation of blood?The intrinsic and extrinsic routes, which are two distinct but interconnected pathways, play a role in the clotting cascade. External trauma that causes blood to escape from the vascular system activates the extrinsic route. Compared to the intrinsic pathway, this pathway is faster.To learn more about coagulation visit:
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Drinking water treatment includes removal of all dissolved chemicals. true false
Answer:
true
Explanation:
because it cleans you inside
is the energy pyramid a true representation of all elements in an ecosystem
Answer:
Below
Explanation:
Not necessarily. Everything is always subject to change and exceptions. However, they do a good job of representing the general idea of energy flow throughout the different parts of an ecosystem
Lysozyme is an enzyme that specifically recognizes bacterial polysaccharides, which renders it an effective antibacterial agent. into what classification of enzymes does lysozyme fall?
Lysozyme fall under Hydrolases in the classification of enzymes.
Lysozyme is an alkaline enzyme that belongs to the glycoside hydrolases class of enzymes. It inactivates bacteria by hydrolysing glycosidic linkages de the peptidoglycan layer of the bacterial cell wall (made of peptidoglycan). The scientific term for glycoside hydrolases is peptidoglycan N-acetylmuramoylhydrolase. FAO/WHO defines them as a polypeptide derived from hen's egg whites with 129 amino acids, a molar mass of about 14000gmol-1 and an isoelectric point of 10.7, and enzymatic activity to hydrolyse the β(1-4) linkages between N-acetylmuramic acid and N-acetylglucosamine in the outer membranes of bacterial species, particularly Gram-positive organisms, usually obtained in the hydrochloride form for food use.
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Can you please answer this question I really need it today to be complete.
Answer:
Im pretty sure that it's, "Lunar Rhythm"
Explanation:
Lunar Rhythm- the regular ebb and flow of oceans and very large inland bodies of water; typically two high and two low tides occur each day (about 24.8 hours).
Answer:
A. Lunar rhythm
Explanation:
Their clocks are set by the tides of the lunar rhythm.
Which musculoskeletal abnormality would the nurse suspect in a client who exhibits short steps and drags a foot?
Spastic gait is the musculoskeletal abnormality in which the client exhibits short steps and drags a foot.
What is spastic gait?The legs are stiff and bounce during a spastic gait or walk, and the feet have a propensity to circumduct and scuff. In extreme cases, increasing adductor tone can cause the legs to cross. Shoes frequently display an uneven worn pattern on the outside.
The typical clinical appearance of a spastic hemiparesis is an arm that is adducted, internally rotated at the shoulder, flexed at the elbow, with pronation of the forearm and flexion of the wrist and fingers. This is caused by spasticity of the arm and leg on one side. The foot is plantarflexed and inverted, and the leg is slightly flexed at the hip and stretched at the knee.
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Approximately how long should it take for blood that was collected in a non-additive plain red top tube to clot?
30 to 60 minutes
Approximately it takes 30 to 60 minutes for blood that was collected in a non-additive plain red top tube to clot.
How soon after blood collection should it be examined?Most of the time, a wet blood sample should be tested in the lab within eight hours after the blood collection event if it is stored at room temperature. The sample is normally kept in cold storage at +2°C to +8°C for a maximum of seven days if testing cannot be finished within that eight-hour window.Is it necessary to spin blood right away?Blood should be examined as soon as possible after being drawn, typically within four hours. Within two hours following the blood draw, the whole blood and serum samples should be separated. Depending on the testing requirements, additives like a clot accelerator, an anticoagulant, or heparin may be utilized.To learn more about blood clot visit:
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The collection of transcribed rnas in a liver cell is identical to the collection of transcribed rnas in a muscle cell. True or false?.
False, The characteristic of rRNAs could be very comparable throughout all species. The center characteristic of the ribosome is largely the identical throughout exceptional businesses of organisms.
However, this doesn't imply the rRNAs are same among species. The real series of the nucleotides in rRNAs (and withinside the rDNA genes) does range among species.
All tRNAs have approximately seventy three to ninety three nucleotides that fold into 4 base-paired stems and 3 loops, a shape which seems like a clover leaf in measurement and. it is "L" fashioned in third-dimensional shape. The three' quit has CCA series. Attachment of an amino acid to the three adenosine yields an aminoacyl-tRNA.
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1. hardwoods reproduce using flowers and have broad leaves; hardwoods include trees such as blank, blank, and blank.
Hardwoods reproduce using flowers and have broad leaves, hardwood include tree such as maple, elm and mango.
The deciduous trees that lose their leaves seasonally those trees are maple and elm. These are those plants which shows a great variety of size, form and foliage. Maple plants bear pairs of winged that is called as samaras.
Elm plant have doubly toothed and lopsided at base. It also surrounded by a flat, hairy and wing like structure that is called as samara.
Lopsided is the stage of plant in which one side is lower and smaller than the other side.
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Neurosurgeons have severed the corpus callosum in human patients in order to reduce:_______
a. alzheimer's disease.
b. epileptic seizures.
c. neural plasticity.
d. reward deficiency syndrome.
Neurosurgeons have severed the corpus callosum in human patients in order to reduce epileptic seizures.
Corpus callosum :The corpus callosum is a substantial mass of more than 200 million myelinated nerve fibers that links and permits communication between the two hemispheres of the brain. Children who have experienced abuse have abnormalities in their corpus callosum.
Effect of cutting a person's corpus callosum down the middleThe brain must coordinate motions with both sides since each hemisphere governs the opposite side of the body. The corpus callosum serves as a conduit for this coordination. Signals cannot cross the corpus callosum, preventing communication between the two hemispheres. Serious coordination issues could result from this.
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Neurotransmitters bind to __________, which are protein structures on the surface of the neuron cell membrane. a. neural receptors b. cell bodies c. impulse docks d. axon terminals please select the best answer from the choices provided a b c d
Neurotransmitters bind to option(a)i.e, neural receptors which are protein structures on the surface of the neuron cell membrane.
A neuron releases a signaling chemical called a neurotransmitter across a synaptic gap to influence another cell. Any major body component or target cell that receives the signal may be another neuron, but it could also be a gland or muscle cell. Throughout the body, a chemical messenger called a neurotransmitter carries, amplifies, and balances information between neurons (sometimes referred to as nerve cells) and target cells.
Neurotransmitters are crucial for maintaining brain function by enhancing and balancing signals in the brain. They support the regulation of physiological processes like respiration and heart rate, but they also serve psychological purposes including learning and the control of emotions like fear, pleasure, and happiness.
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Answer:
A. neural receptors
Explanation:
I got it right, hope this helps :)
An isotope is an atom with the same atomic number but different
Which conditions may result from immunoglobulin ige antibodies on mast cells reacting with antigens? one, some, or all responses may be correct.
The conditions that may result from immunoglobulin ige antibodies on mast cells reacting with antigens is allergic condition which can be acute or anaphylaxis.
Immunoglobulin IgE is the type of antibody which reacts to the allergy that occurs in the body. When any allergen like pollens enter in the body the IgE will travel to the cells called mast cells or basophils cells which releases chemicals called histamine that produces the allergic response in the body.
Sometimes the body may even react to non harmful particles like food items and pollen grains and produces immune response and inflammatory action against them.
Allergic condition are the abnormal responses of the immune system against foreign particles.
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Why it is that proline is considered to disrupt a helix but histidine does not?
Proline can disrupt the helix while histidine cannot because of their difference in side-chain structures.
Proline is different from all the other amino acids as it contains a secondary amine rather than the amino group. The side chain of the proline forms a cyclic structure among itself, thereby creating stearic hindrance. Thus, making it unsuitable for the alpha-helix. This is why proline acts as a helix breaker.
Histidine is a positively charged amino acid with an imidazole functional group. Unlike proline, the side chain of histidine does not form a cyclic structure in itself and hence it does not act as a helix breaker.
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16. What is an enzyme?
Explanation:
Enzymes are proteins.They can catalyse different reactions they can be regulated in different ways with is very important to regulate the metabolism.Enzyms can catalyse different reactions bacause they have active center with help the molecules of the substrate to "meet each other" more easily and that lowers the the energy point needed for the reaction
What are the primary molecules making up plasma membranes in cells? group of answer choices
The primary molecules of the plasma membrane are lipids , protein , cholesterol and carbohydrates groups.
What is the plasma membrane?The plasma membrane also called the cell membrane, is the membrane found in all cells that seperate the interior of the cell from the outside environment. Plasma membrane provides protection for a cell. It also provides a fixed environment inside the cell.
The primary components of the plasma membrane are lipids , protein and carbohydrates groups that are attached to some of the lipids and proteins. A phospholipid is a lipid made by glycerol ,two fatty acids and phosphate linked head group.
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A 9th grade student in a biology class views a sample of pond water under a microscope. She observes unicellular organisms with cell parts including chloroplasts, a flagellum, and a nucleus. She observes the organism ingesting (eating) food for energy. Which kingdom is this organism in?
The organism will belong to the protist kingdom.
Plants and ProtistsThe plant kingdom consists of multicellular eukaryotic organisms whose cells contain an organelle known as chloroplast.
The chloroplast houses the chlorophyll which is a green pigment responsible for the capturing of solar radiation and gives plants the capacity to manufacture their own foods using photosynthesis.
Organisms in the protist's kingdom are also eukaryotic but strictly unicellular. Some of them have the capacity to carry out heterotrophic as well as autotrophic nutrition like plants.
The organism observed by the student is unicellular and contains chloroplasts. This means that the organism belongs to the protist's kingdom.
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Which process of molecule transport would occur when a patient develops pedal edema?
Answer:
Osmosis of molecule transport would occur when a patient develops pedal edema.
Explanation:
An abnormal buildup of fluids inside the ankles, foot, and lower legs known as pedal edema causes inflammation inside the ankles as well as feet. There are two things that might make the feet swollen. Increased capillary leaking from the venous system can affect fluid to flow into the interstitium, resulting in venous edema. A person having hypertension and developing pedal edema owing to too much salt in the blood does have a blood pressure around 160/90 mm Hg. Water begins to flow down the gradient as a result. As a result, osmotic pressure causes the water within blood vessels to migrate between higher concentrations toward lower amounts all across semipermeable, which causes water to accumulate in extracellular spaces. This process is known as osmosis.
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The ___________ is the thin layer of the mucosa responsible for pulling the mucosa into its many folds which increases the surface area of the alimentary canal.
Muscularis mucosa
The Muscularis mucosa is the thin layer of the mucosa responsible for pulling the mucosa into its many folds which increases the surface area of the alimentary canal.
The mucosa's outermost layer is called the muscularis mucosa. Elastic fibers and 3–10 smooth muscle cells make up its structure, which is often divided into an inner circular layer and an outer longitudinal layer. From the muscularis mucosa, smooth muscle cells may expand into the lamina propria and the villi.Where can you find the muscularis mucosa?The oesophagus and the large intestine, particularly in the terminal region of the rectum, have exceptionally well-developed muscularis mucosae. Additionally, the villi or spaces between the tubular glands of the stomach and large intestine contain isolated muscle cells descended from the muscularis mucosae.To learn more about muscularis mucosa visit:
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Please please ASAP help me ..Will mark Brilliantest
Alex poured some pond water into three beakers. She then put waterweed into each beaker. She put the beakers in different places.
b. In the school pond there were lots of water lilies with large leaves covering the surface. There were not many plants growing below the surface. Suggest a reason for this.
Answer:
The growth of waterweed plant is higher in beaker E.
Explanation:
The growth of waterweed plant is higher in beaker E because the waterweed absorb nutrients that is provided in the form of fertilizers. Fertilizers are the nutrients that is essential for the growth of plants. Those plants that has more nutrients available can grow faster than those plants which have no nutrients or less nutrients because these nutrients provides raw material for the formation of amino acids and enzymes that contributes in the growth and development of the body.
The molecular clock has limited usefulness for estimating divergence times among species in part due to the saturation of dna sequences. This occurs because.
(D) in highly diverged lineages, substitutions will occur at sites that have been substituted previously is the reason why the molecular clock has limited usefulness for estimating divergence times among species in part due to the saturation of dna sequences.
The number of modifications or mutations that have taken place in a lineage of organisms' DNA or protein sequences is represented by the frequency of a molecular clock. It can be used to determine roughly when two lineages split apart historically.
However, in highly diverse lineages, alterations could take place more more once for a specific spot (i.e., those lineages that were divided extremely far back in evolutionary time). Therefore, it won't be helpful for estimating divergence times among species, in part due to the saturation of DNA sequences.
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Question correction:
The molecular clock has limited usefulness for estimating divergence times among species in part due to the saturation of DNA sequences. This occurs because
A. DNA sequences are unable to revert back to previous allelic states.
B. the variation in the substitution rate between closely related lineages prevents accurate estimation of divergence time.
C. variation in population sizes among lineages changes the effect of genetic drift.
D. in highly diverged lineages, substitutions will occur at sites that have been substituted previously.
When forming a semi-solid gel such as gelatin, which molecules does the process of protein coagulation entrap?.
Answer:
Explanation:
what drink has no flavor WATER
So water
In the formula for determining a population's genotype frequencies, the 2 in the term 2pq is necessary because?
Answer:
n the formula for determining a population's genotype frequencies, the 2 in the term 2pq is necessary because of the following reason:
Explanation:
The number of heterozygotes with in the population is increasing by a factor of two heterozygotes possessing two alleles. Or we ca also say the population is diploid. The frequency of every genotype is calculated as the proportion of the population's overall population divided by the quantity of people possessing that genotype. Since genotype, as well as allele frequencies are connected, it is crucial to distinguish between the two. Future "genomic profiling" techniques might also be employed to identify someone's chances of getting an illness or perhaps having a genetic disorder. Ethnic diversity may also be calculated using this method. . The proportion of people who share a certain genotype within a community is termed relative genotype occurrence. This can play an important role i the distribution of genetic diversity in a population.
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