Sister chromatids and homologous chromosomes are different from each other by homologous chromosomes contain the same gene loci but may have different alleles of a particular gene. Sister chromatids are identical copies of each other produced during DNA replication.
Thus, the correct option is B.
Whаt аre sister chromаtids?Sister chromаtids аre formed when two identicаl chromаtids аre joined together аt the centromere. The centromere is а constricted region where two sister chromаtids аre in contаct with eаch other.
Sister chromаtids refer to pаired chromаtids formed when chromosomes replicаte. The sister chromаtids аre joined to eаch other viа the centromere аnd only become sepаrаted when cell division occurs. Homologous chromosomes, by contrаst, аre pаirs of geneticаlly distinct chromosomes. While eаch pаir codes for similаr genetic trаits, they аre geneticаlly non-identicаl. One chromosome comes from one pаrent, while the second chromosome comes from the second pаrent.
Your options aren't well arranged, but most probably your options were
A. They are not different. Homologous chromosomes and sister chromatids are both identical copies of each other.
B. Homologous chromosomes contain the same gene loci but may have different alleles of a particular gene. Sister chromatids are identical copies of each other produced during DNA replication.
C. Homologous chromosomes are identical copies of each other. One sister chromatid comes from the father, and one comes from the mother.
D. Sister chromatids are only formed during mitosis. Homologous chromosomes are formed during meiosis.
E. Homologous chromosomes are closely associated with each other in both mitosis and meiosis. Sister chromatids are only associated with each other during mitosis.
Thus, B is the correct option.
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some species of animals and plants are currently responding to climate change by extending their range into new territories t/f
The claim that some animal and plant species are currently expanding their range into new areas in response to climate change is True.
What impact does climate change have on plants and animals?The availability of water, food sources, and vegetation are all impacted by rising temperatures, among other factors. Ecosystems might become incapable of supporting some species, forcing animals to migrate outside of their usual ranges in search of food and suitable living conditions and leading to the extinction of other species.
How is climate change affecting animals?Climate change has created several difficulties for animals in all of our parks. Because of changes that result in a lack of food, less successful reproduction, and interactions with the environment for local fauna, rising temperatures reduce the likelihood of many species surviving.
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Which part of the nerve cell sends information to the brain?
synapses
synapses
axons
axons
neurons
neurons
dendrites
Answer:
Axons
Explanation:
The elongated fibre known as the axon transfers the neural signal from the cell body to the terminal endings.
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What is leaf senescence?
Answer:
Leaf senescence constitutes the final stage of leaf development and is critical for plants' fitness as nutrient relocation from leaves to reproducing seeds is achieved through this process. Leaf senescence involves a coordinated action at the cellular, tissue, organ, and organism levels under the control of a highly regulated genetic program.
Explanation:
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Which animals are most commonly used in psychological research?a. dogsb. monkeysc. rodents and birdsd. insects and fruit flies
Rodents and birds are the animals most commonly used in psychological research
Why Rodents and Birds are commonly used?
In the psychological experiments above animals are mostly used because of ethical considerations. Researchers cannot use human subjects due to ethical issues. So, they use these animals. Also, in a few experiments to study behavior animals are preferable. Also controlling these animals is easy for researchers for studying the effects of variables.
Data from animal studies: How generalizable to humans?
There are drawbacks to utilizing animals in experiments, as there are with any scientific practice. The claim that animals are not good models for people is frequently made in opposition to the use of animal research. This argument is based on the observation that humans are not just human-sized lab rats; our bodies (and minds) function differently. Interestingly, mice make for interesting models of the human body, according to biology.
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.
offspring that are genetically unique are the result of
Answer:
Crossing Over
Explanation:
In other words, sexual reproduction results in offspring that are genetically unique. They differ from both parents and also from each other. This occurs for a number of reasons. When homologous chromosomes form pairs during prophase I of meiosis I, crossing-over can occur.
Hope it helps and don't forget to rate-me down below and smash that brianliest button!Your Best,Edwinarrows have plastic vanes or feathers that provide stability and accuracy in flight. what is the name for these vanes or feathers? fletching nock nocking point crest
The correct option is A ; Fletching , The arrows have plastic vanes or feathers at the end of it. These are known as fletchings. The purpose of these is to shift the center of pressure (COP) backwards.
COP is the point where the pressure is supposed to be concentrated(acting) on a body similar to center of gravity (CG). While the arrow is in flight it can divert from its path due to surrounding pressure.
With the help of COP we can cancel out these unwanted motions making sure the arrow follows the desired path. The COP should always be at the opposite end of CG. Since CG in the arrow is in near the tip, fletchings are attached at the end to shift the COP towards the end and thus giving the required stability to the arrow while in flight.
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Full Question ;
Arrows have plastic vanes or feathers that provide stability and accuracy in flight. What is the name for these vanes or feathers?
fletching
nock
nocking point
crest
the ulnohumeral joint belongs to which synovial joint structural category?
Movement between the ulna and humerus happens at the ulnohumeral joint. Of the three types of structural joints, synovial joints have the most range of motion.
The synovial joint in the ulna is what kind?The head of the radius articulates with the radial notch of the ulna to form the synovial joint known as the proximal radioulnar joint. The anular ligament holds the radial head firmly in place within the radial notch of the ulna.
What 4 different types of structural joints are there?Depending on the components of the joint and whether a cavity exists or not, the structural categorization classifies joints as being either bony, fibrous, cartilaginous, or synovial.
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active transport processes: move solutes through the phospholipid bilayer without the use of integral proteins. move solutes from a higher concentration to a lower concentration. move solutes with or along their concentration gradients. require cells to expend energy (atp).
Active transport processes require cells to expend energy (ATP).
What are Active and Passive transport processes?
The biological mechanisms of active and passive transport deliver oxygen, water, and nutrients to cells while removing waste. Because it involves the movement of biochemicals from lower concentration to greater concentration, active transport requires chemical energy. Passive transport, on the other hand, does not require energy and simply transports biochemicals from places of high concentration to areas of low concentration.
In primary active transport, specific trans-membrane proteins work as pumps to move the necessary biochemicals across when they detect the presence of a molecule that has to be transported. These pumps are propelled by the chemical energy ATP.
Passive transport can be divided into four primary categories: osmosis, diffusion, assisted diffusion, and filtration.
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When an organism having two different alleles for a particular gene?
Heterozygous is an organism that has two different alleles for a particular gene.
What is Heterozygous?Genes come in a variety of forms. Each variant is referred to as an allele. You inherit two alleles for each gene: one from your biological father and one from your biological mother. A genotype is the sum of these alleles.
You have a heterozygous genotype for that gene if the two versions vary. Being heterozygous for hair color, for example, means you have one allele for red hair and one allele for brown hair.
The interaction of the two alleles influences which qualities are expressed. It also determines which traits you are a carrier for.
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What characteristics of Chlamydomonas are typical of protists in general? Check All That Apply - its mode of nutrition - its size - its aquatic habitat - its type of motility - the lack of characteristics that define members of the plant, animal, and fungal kingdoms - its ecological role
Its type of the motility is the main characteristics of Chlamydomonas are typical of protists in general ,therefore the correct option is D.
Chlamydomonas is the protist, which are a different group of organisms. Some traits of Chlamydomonas that are typical of protists in general include its mode of nutrition( frequently heterotrophic), its size( generally bitsy), its submarine niche, its type of motility( frequently flagella), and also its ecological part( frequently as a primary patron).
Protists warrant the characteristics that define the members of the factory, beast, and the fungal fiefdoms, similar as the organized towel and organs, and lack of cell walls. Protists are set up in a wide range of territories, from brackish to marine and from hot springs to snowfields, and they frequently play a crucial part in the food web by furnishing energy.
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The endocrine system is related to nutrition through ?A)the transport of nutrients, gases, and wastes throughout the body. B)the regulation of the senses and control of intellectual functions. C)the effects of hormones on metabolism and growth. D)the production of enzymes that aid in digestion.
C)the effects of hormones on metabolism and growth. Through the effects of hormones on metabolism and development, the endocrine system is linked to nutrition.
Hormones generated by glands in the endocrine system govern nutrient metabolism and control the pace at which cells consume these resources for energy and development. Insulin, a hormone generated by the pancreas, for example, controls the absorption and use of glucose by cells. Growth hormone, which is generated by the pituitary gland, encourages cell and tissue growth. The endocrine system does not transfer nutrients, gases, and wastes throughout the body, as the circulatory and respiratory systems do. It also does not govern the senses or control cerebral activities, as the nervous system does. The endocrine system.
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So this isn’t really a question about biology it’s just I have a test on 2 topics of biology and I don’t know how to study biology as in there’s so much to know that I’m type of starting to give up not cause of the subject actually I love it it’s just personally I don’t know how to study it
Please any advice to study (tried making my own notes still no use ☹️)
Answer:
Quizlet
Explanation:
You should go to quizlet and type in the name of your topic. It should give you flashcards that can test you on the lesson, and on the back of the flashcards are the answers.
Another way I suggest is typing in random questions from your topic and you may be directed to a website that has a lot of answers and questions that relate to that topic.
I really hope this helps and good luck on your test :)
Let me know the name of your topic and maybe I can give you a website that could help.
Answer: Some advice to better help you study is only take notes on what you believe is key information. This will lessen the workload and also get rid of unwanted information. I also recommend making notes on ways you understand. Often think if any of the information you read would come up in the Quiz if it is key information. If you have trouble writing the notes and you can't comprehend what it says make it more simpler this technique comes in handy. Also take breaks after reading a certain amount of paragraphs. I would also recommend searching for keywords you don't understand and make sure to try and retain focus.
I hope this helps you. Good luck (;
what experimental results would support the scientists' hypothesis? label the bars on the graphs to match the results predicted by the hypothesis.
When this experiment was performed, the results which were obtained supported the scientists' hypothesis that Mice which has received the microbes from an obese donor had a greater increase in their body fat than the mice which had received microbes from a lean donor.
Scientists has randomly divided lean the germ-free mice in two groups. The experimental group was the group which received microbes from a genetically obese donor and the control group was given microbes from a genetically lean donor. Both groups were then fed the same low-fat and high-fiber diet.
After two weeks, the scientists observed the increase in body fat in the mice. The results which were obtained supported the scientists' hypothesis that Mice which has received the microbes from an obese donor, which is the experimental group had a greater increase in their body fat than the mice which had received microbes from a lean donor which is the control group.
--The given question is incomplete, the complete question is
"For this experiment, the scientists randomly divided lean germ-free mice into two groups. The experimental group received microbes from a genetically obese donor (the donor's obesity was due to genetic factors, not diet). The control group received microbes from a genetically lean donor. Both groups were fed the same low-fat, high-fiber diet.
After two weeks, the scientists measured the increase in body fat in the mice. They also determined the amount of energy (in kcal/g) in the feces of both groups -- that is, the energy in the food molecules that was not extracted or absorbed by the mice.
What experimental results would support the scientists' hypothesis? Label the bars on the graphs to match the results predicted by the hypothesis."--
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which uterine contraction strength classification is used when labor is measured at >500 montevideo units (mvus)?
. When labor is measured at a strength greater than 500 Montevideo Units (mVUs), it is considered to be in the active stage. This measurement is used as a standard for determining the strength of contractions during labor as it provides a consistent and objective measure of contractions.
Uterine contractions during labor serve to dilate the cervix and move the baby through the birth canal. Active labor contractions are typically stronger and closer together, and they can cause discomfort or pain for the mother. The intensity and duration of contractions during active labor can vary, and it is important for healthcare providers to monitor these contractions and the progression of labor in order to ensure a safe delivery.In conclusion, the classification of uterine contraction strength is an important aspect of the monitoring and management of labor. A measurement of greater than 500 mVUs is used to determine that labor is in the active stage, and it is a key indicator of the progression of labor towards delivery.
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a benefit of a deep beak is that it helps with eating harder seeds during a drought, but deep beaks also have disadvantages. finches with deep beaks require more food and are less likely to survive the juvenile period than finches with shallow beaks. after the drought subsided on daphne major, what is likely to have happened to the average beak depth of the next generation?
It is likely that the average beak depth of the next generation decreased as the shallow beaks were more likely to survive the juvenile period.
What are deep beaks and shallow beak benefits?
Deep beaks were favoured in an environment with a large availability of food. This allowed deep beaks to become more common in the population, leading to an increase in the average beak depth. Deep beaks allowed for more efficient feeding, leading to increased reproductive success and population growth.
As the environment returned to normal, natural selection favoured shallow beaks as they were more efficient at obtaining food. This allowed shallow beaks to become more common in the population, leading to a decrease in the average beak depth. Additionally, shallow beaks were more likely to produce more offspring due to their increased survival rates, further contributing to the decrease in the average beak depth.
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root hairs are important to a plant because they _____.
Histone acetyl transferases exert their effect on gene activity by?
Histone acetyl transferases exert their effect on gene activity by neutralizing the positive charges on the lysine's of histones (therefore reducing the attraction forces and letting it unwind).
In order to create -N-acetyl lysine, histone acetyltransferases (HATs) transfer an acetyl group from acetyl-CoA to the conserved lysine amino acids on histone proteins. Histones are wrapped around DNA, which can be used to turn on and off genes by adding an acetyl group to the histones. Generally speaking, histone acetylation boosts gene expression. Histone acetylation is typically connected to transcriptional activity and connected to euchromatin. Because euchromatin is less compact, transcription factors can bind to DNA regulatory sites more quickly, activating transcription. When first found, it was believed that lysine's acetylation neutralized the positive charge ordinarily present, lowering the binding between histone and (negatively charged) DNA, making DNA more accessible to transcription factors.
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Polymers are formed by linking monomers together through _____ reactionscondensation
Polymers are formed by linking monomers together through _Dehydration synthesis, reactionscondensation
Covalent bonds are used to join the monomers together to create polymers, which are bigger molecules. Monomers produce water molecules as byproducts while they accomplish this. Dehydration synthesis, which literally translates as "to bring together while losing water," is the name of this kind of reaction.
A polymer is a substance or material made up of macromolecules, which are very big molecules made up of several repeating subunits. Both synthetic and natural polymers play significant and pervasive roles in daily life as a result of their wide range of features. From well-known synthetic plastics like polystyrene to natural biopolymers like DNA and proteins that are essential to biological structure and function, polymers come in many shapes and sizes. Numerous tiny molecules, or monomers, are polymerized to produce polymers, both natural and manufactured. They have unusual physical features such as toughness, high elasticity, viscoelasticity, and a propensity to form amorphous and semicrystalline structures rather than crystals due to their subsequently huge molecular mass in comparison to small molecule compounds.
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A bird gets tired while flying over the ocean, so it lands on a buoy to rest. However, the bird avoids each passing wave by flying up right before the wave hits the buoy and returning immediately after. What wave characteristic is MOST likely to give the bird a good chance to rest between waves? A. a high average velocity B. a deep wave base C. a short average wave period D. a low wave frequency
A bird gets tired while flying over the ocean, so it lands on a buoy to rest, and the bird flies up to avoid each passing wave, the wave characteristic is most likely to provide the bird with a good chance to rest in a short average wave period, as in Option c.
What is the significance of the wave period for birds?In a short wave period, birds get less time to rest between each wave, and in a longer wave period, birds get more time to rest between waves, so the velocity of the waves affects the bird's resting capacity.
Hence, a bird gets tired while flying over the ocean, so it lands on a buoy to rest, and the bird flies up to avoid each passing wave, the wave characteristic is most likely to provide the bird with a good chance to rest in a short average wave period, as in Option c.
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distinguish between the functions of the small and large intestines in the process of digestion. what differentiates the consequences of secretion of gastrin and cholecystokinin (cck)?
Through the action of digestive enzymes and digestive fluids, the small intestine is principally responsible for the bulk of nutritional absorption and the breakdown of food. The remaining food is primarily absorbed by the large intestine as water and electrolytes, which are then compressed into feces and subsequently expelled from the body.
Gastrin secretion has the effect of stimulating the release of digestive enzymes and stomach acid, which help break down food. The results of CCK secretion, on the other hand, including the stimulation of bile release, the slowing down of stomach emptying, the stimulation of digestive enzyme production, and the control of blood sugar levels.
What is the importance of Intestine?
The intestine is an essential component of the digestive system and serves a variety of purposes, such as:
Nutrient absorption: Digested food, such as carbs, lipids, and proteins, are absorbed by the intestine and transported into the bloodstream.
Waste removal: Indigestible substances and waste products are expelled from the body through the intestine in the form of feces.
Control of fluid balance: By absorbing water from the food that has been digested and regulating the amount of water in feces, the intestines contribute to the regulation of fluid balance in the body.
The intestine generates hormones that control the digestive process, including secretin and cholecystokinin.
Immune protection: The intestine is home to numerous immune cells that aid in defending the body against pathogenic microbes and other outside invaders.
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separation of proteins in the first dimension of 2d gel electrophoresis is based on a protein’s molecular weight. true or false
truth. The molecular weight of proteins determines how they are separated in the first dimension of 2D gel electrophoresis.
Two-dimensional gel electrophoresis separates proteins first based on isoelectric point and then based on size, whereas one-dimensional SDS-PAGE separates proteins based on size. In isoelectric focusing, proteins are first separated according to their isoelectric point (pl), followed by separation by SDS-PAGE, which separates proteins according to molecular weight. Using high-throughput mass spectrometry, individual protein spots can be eluted and identified by 2D electrophoresis. One-dimensional SDS-PAGE separates proteins by size, whereas two-dimensional gel electrophoresis separates proteins first by isoelectric point and then by size.
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What has metagenomic analysis allowed researchers to do for the first time?
Using metagenomics, researchers can analyze microbial diversity and also identify new proteins, enzymes, and biochemical pathways. Metagenomics has been used to identify new beneficial genes from the environment, together with novel antibiotics, enzymes that biodegrade pollutants, and enzymes that make novel products.
Metagenomics is the study of genetic material that has been directly retrieved from environmental or clinical sample via a process called sequencing. Alternative names for the wide field include ecogenomics, microbiomics, community genomics, and environmental genomics. To offer a profile of variation in a natural sample, early environmental gene sequencing cloned certain genes (usually the 16S rRNA gene), in contrast to classical microbiology, microbial genome sequencing, and genomics, which rely on manufactured clonal cultures.
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Explain why genetic diversity is important.
Genetic diversity is important as it introduces variations in a population and help the species to adapt to the changing environmental conditions.
What is Genetic diversity?
Genetic diversity is the total number of genetic characteristics which are present in the genetic makeup of a species. Genetic diversity ranges widely from the number of species to differences within the species and it can be attributed to the span of survival for the species.
Genetic diversity is important for a healthy population through maintaining the different varieties of genes which might be resistant to pests, diseases, or other conditions. Genetic diversity helps the species to adapt to the changing environment.
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are used by cells to get and store energy. a. carbohydrates b. proteins c. lipids and. nucleic acids
Lipids, which are employed by cells to obtain and store energy, are the proper response.
The storage of energy in the form of neutral lipids like triglycerides and sterol esters is the primary function of lipid droplets (LDs), intracellular organelles. They are common organelles that can be found in bacteria, fungi, plants, and even animals. LDs are made up of a polar lipid monolayer with many different proteins, some of which are involved in lipid metabolism, around a core of neutral lipids. Diglyceride acyltransferase 1 (DGAT1) and other enzymes that synthesize neutral lipids in the endoplasmic reticulum (ER) membrane cause the emergence of nascent LDs, which are organelles that are partially or entirely different from the ER.
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employees should use a disinfectant when cleaning up a surface contaminated by blood. (True Or False)
A disinfectant should be used to remove any blood contamination. Thus, the claim is accurate.
What is the purpose of disinfectant?Disinfecting involves applying chemicals (disinfectants) to surfaces and items to eradicate germs. Bleach or alcohol solutions are a few of frequent disinfectants. In order to attack the germs, you often need to keep the disinfection just on surfaces and items for a particular amount of time.
Disinfectant: What does it mean?Any drug or method that kills germs, including virus, bacteria, and other microbes that may infect people and cause disease, and therefore is typically employed on non-living materials.
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What cells does Pneumonia attack Need Asap
Answer:
White blood cells
Explanation:
Most pneumonia occurs when a breakdown in your body's natural defenses allows germs to invade and multiply within your lungs. To destroy the attacking organisms, white blood cells rapidly accumulate. Along with bacteria and fungi, they fill the air sacs within your lungs (alveoli).
in response to a nerve impulse, the _____ releases neurotransmitters.
In response to a nerve impulse, the presynaptic neuron to release the neurotransmitter.
Chemical transmission basically involves the release of chemical messengers which are known as the neurotransmitters. Neurotransmitters carry the information from the pre-synaptic neuron towards the post-synaptic neuron which receives the signal.
Synapses are formed between the nerve terminals or the axon terminals on the pre-synaptic neuron as well as the cell body or the dendrites of the post-synaptic neurons. The pre-synaptic neurons release these neurotransmitters when they receive a nerve impulse. These neuro transmitters then diffuse through the synaptic cleft and go and bind to the receptors present on the post-synaptic neuron.
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what part of the brain is the main relay station for information from the senses?
The thalamus part of the brain is the main relay station for information from the senses
Your thalamus is a structure in the middle of your brain that looks like an egg. It is referred to as a relay station for all incoming motor (movement) and sensory (touch, sight, hearing, and smell, but not smell) information to your brain. Before being routed or directed to its destination in your brain's cerebral cortex—the outermost layer of your brain—for further processing and interpretation, all information must first pass through your thalamus, like a relay or train station.
it brings information into your brain through nerve signals from all of your senses—taste, touch, hearing, and sight—with the exception of smell. The thalamic nucleus of each sensory function receives, processes, and transmits information to the area of your cerebral cortex that is related to that function.
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about how many cells comprise the body of an adult? group of answer choices 50 to 100 billion 50 to 100 quadrillion is isn't known 50 to 100 million 50 to 100 trillion
Adult human body contains approximately 50 to 100 trillion cells.
The exact number of cells in an adult human body is not known, but estimates range from 50 to 100 trillion. This estimate takes into account all of the different types of cells present, including muscle cells, nerve cells, skin cells, and others. The number of cells in an adult human body is the result of many years of growth and division, beginning with a single cell at the time of conception. The total number of cells changes throughout life as cells die and are replaced by new cells. However, the overall number of cells in the body remains relatively constant, despite the constant turnover of individual cells.
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True or False?α-strands and the β-helices are the two most common forms of secondary protein structure.
True. The two most prevalent styles of secondary protein complexes are -strands and -helices.
Helixes and pleated sheets are the two most typical forms of secondary structures. Hydrogen bonds, that also form between the amino H and carbonyl O of two different amino acids, keep both structures in place. Beta-Pleated sheets and alpha-Helixes are examples of a protein's secondary structure. Both of them are created by hydrogen bonds between the amino H and carbonyl O of different amino acids. Beta-pleated sheets and alpha-helices are the most typical structures that are created. Hydrogen bonds that form all along protein backbone bind the two of them together. A typical component of protein structure is the -helix.
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