A Quaternary structure is referred to as being present in proteins having several polypeptide chains.
How many polypeptide chains are there in that structure?More than one polypeptide chain is used to build many proteins. The general arrangement of the several subunits that make up a protein's quaternary structure is described. Four subunits make up the human hemoglobin molecule, for instance, which is depicted below.
A polypeptide chain has what kind of structure?An amino acid sequence is the building block of a polypeptide chain. Peptide bonds link the following amino acid to the one before it. Amino acids come in 20 various varieties, which are found in cells. The carboxyl group of an amino acid is joined to a central carbon in every amino acid.
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Action potentials are important in muscle contraction because?
Action potentials are important in muscle contraction because they travels down the t-tubules and excites the sarcoplasmic reticulum which releases calcium. Calcium when bound to troponin causes conformational changes in the sarcomere. Consequently, the interaction of thick and thin filaments of the sarcomere leads to muscle contraction.
The neurological system sends a signal, which triggers the onset of muscle contraction. A type of nerve cell called a motor neuron conducts the signal, an impulse known as an action potential. The motor neuron connects with a muscle cell at a location known as the neuromuscular junction. Muscular fibers are the cells that make up skeletal muscle tissue. The motor neuron releases a chemical message when the nervous system signal reaches the neuromuscular junction. Acetylcholine, a neurotransmitter, which carries the chemical signal, attaches to receptors outside the muscle fiber. A chemical process begins inside the muscle as a result.
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A ____ epithelium is found in areas likely to be subjected to abrasive activities and mechanical stress
Stratified squamous epithelium is located in areas likely to experience mechanical stress and friction.
This type of epithelium is composed of multiple cell layers, with the outermost layer being composed of flattened, dead cells. This layer of dead cells is able to act as a protective barrier against abrasion, providing a tough surface that is impermeable to most substances.
Furthermore, the multiple layers of cells provides greater structural integrity and the ability to withstand greater mechanical stress. This type of epithelium is found in areas such as the skin, the oral cavity, and the esophagus.
The skin is subjected to a variety of abrasive activities throughout the day, such as rubbing against clothing, and the oral cavity and esophagus are subjected to mechanical stress from swallowing and digestion. These areas are therefore well-suited to the protective qualities of stratified squamous epithelium.
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How were the fish you will be using in this virtual lab caught?
Stickle back evolution lab question #4 B
Answer:
Explanation: fishing net.
is sweetened condensed milk the same as evaporated milk
The primary distinction between evaporated milk and condensed milk is that the latter is sweetened while the former is not.
What do items with added sweetened?Any liquid that has been sweetened with additional sugars, such as brown sugar, corn sweeteners, high fructose corn, dextrose, glucose, hypoglycemia, high-fructose high fructose corn, honey, lac, malt syrup, maltodextrin, molasses, raw sugar, or sucrose, is called a sugar-sweetened beverage.
Why is anything "naturally sweetened"?A product has been treated with plant compounds such aloe nectar, honey, stevia, or xylitol when it is labeled as "naturally sweetened." Moderation is crucial when it comes to sweets, according to experts. "These sweeteners taste similar sugar but have fewer calories.
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which body system pulls on the bones of the skeletal system to allow movement?
Answer: The muscular system
Explanation:
What produces and secretes releasing and inhibiting hormones?
Answer:
Hypothalamus
Explanation:
It is a form of homeostasis
why are transport proteins needed in the cell membrane?
Transport proteins are needed in the cell membrane for entering the cell with ions and other tiny substances.
Transport proteins are channels that allow materials to move in and out of the cell. They are routes that cross the cell membrane to connect the interior and outside of the cell. Many transport proteins are specialized, which means that only a particular kind of molecule may pass through them. For instance, aquaporins only permit water to flow through.
The cell needs transport proteins to function. They facilitate the entry of elements into the cell that would not otherwise be possible. For instance, the primary energy source of the cell is glucose. It cannot, however, diffuse across the cell membrane because of its size. rescuing transport proteins A protein allows glucose to enter a cell, giving the cell energy.
To readily enter and exit, essential substances including proteins, lipids, ions, and even water need transport proteins. the cell's. Even waste materials typically need some sort of assistance to exit the cell. Without transport proteins, cells would be unable to take in nutrients and materials as well as dispose of potentially harmful waste.
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what is energy dense?
Answer:
lt is the amount of energy in a paticular weight of food and depending on food's mix of nutrients , ranges from 0 to 9 kcal/g
What bacteria only have the ability to ferment to obtain energy?
Anaerobic bacteria only have the ability to ferment to obtain energy.
To gain energy for development, anaerobic bacteria digest amino acids and carbohydrates. Low free energy relative to aerobic oxidations are the result of the substrate of a fermentation having to act as both an electron donor and acceptor in the absence of oxygen and other inorganic electron acceptors. Up until around ten years ago, it was believed that anaerobes solely utilised substrate level phosphorylation (SLP), a process that could only conserve a portion of the available energy. Anaerobes were therefore considered to be ineffective and inefficient energy savers. This viewpoint was altered by the identification of electrochemical gradients produced by ferredoxin- or biotin-dependent decarboxylations of . Oxidative decarboxylation of 2-oxoacids and the recently discovered flavin-based electron bifurcation produce reduced ferredoxin (FBEB).
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When a semipermeable membrane is placed between two solutions?
Osmosis takes place between two solutions separated by a semipermeable membrane. Osmotic pressure is the required amount of external pressure must be applied in order to stop any net solvent movement across the membrane.
Osmosis is the naturally occurring net movement or diffusion of solvent molecules through a membrane that is selectively permeable, in a direction that tends to balance the solute concentrations on the two sides, from a region of high water potential (region of lower solute concentration) to a region of low water potential (region of higher solute concentration). It can also refer to a physical process that uses a membrane that is selectively permeable to separate two solutions with different concentrations (permeable to the solvent but not the solute). Osmosis can be used to your advantage.
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a type of mutation in which a region of one chromosome is moved to a different chromosome is called __________.
A type of mutation in which a region of one chromosome moves to another chromosome is called a translocation .
In genetics, chromosomal translocation are phenomena that result in abnormal rearrangements of chromosomes. These include balanced and unbalanced translocations, of which there are two main types: Reciprocal translocation and Robertsonian translocation. In a translocation, a segment moves from one of her chromosomes to a new location on a non-homologous chromosome or the same chromosome. Translocations lead genes into new linkage relationships, creating chromosomes without a normal mating partner. Some human diseases caused by translocations are: cancer. Some forms of cancer are caused by acquired translocations (as opposed to those present from conception). It is mainly reported in leukemia (acute myelogenous leukemia, chronic myelogenous leukemia).
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select the correct statement regarding tissue repair. a. granulation tissue is highly susceptible to infection. b. the clot is formed from dried blood and transposed collagen fibers. c. granulation tissue is another name for a blood clot. d. histamine causes capillaries to dilate and become permeable.
c. granulation tissue is another name for a blood clot. Granulation tissue is a highly vascularized mixture of macrophages and fibroblasts embedded in a collagen and fibrin matrix.
It is crucial because it promotes early blood flow and strength to the wound, creates a surface for fibroblasts and epithelial cells to migrate on, and fights off infection. In order to repair the damaged tissues, our body automatically sets into motion a sequence of actions known as the "cascade of healing" when the skin is harmed. Hemostasis, Inflammatory, Proliferative, and Maturation are the four overlapping stages that make up the healing cascade. Inflammation is the initial step in tissue restoration. Injury to tissues causes inflammation.
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recall the definition of a microbe. 1.1.b. list examples of microbes. 1.1.c. state some problems with the definition of a microbe. 1.1.d. explain the implications o
a. The definition of a microbe are microscopic organisms b. examples of microbes namely bacteria c. some problems with the definition of a microbe is bacteria cause disease d. The implications both detrimental and beneficial.
Microbes are very small organisms that can only be seen with a microscope. Microbes are everywhere, in the air, in the water, on the ground, and in the environment. Examples of microbes are bacteria, fungi, and viruses.
Some bacteria can cause disease because they become parasites or pathogens by taking nutrients from the host cells they inhabit. They infect the human body through various ways such as entering through the mouth or through food. One of the implications of harmful microbes, namely Salmonella typhosa, can cause typhoid. A person who gets sick from this bacteria will experience diarrhea, fever, bleeding in the intestine and even die. However, some microbes can also provide benefits, such as Lactobacillus sp. which is used for the process of making yogurt milk and cheese milk.
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the esophagus is contains smooth muscle that involuntarily contracts rhythmically in a manner called peristalsis?
The esophagus in our body contains smooth muscles known as circular muscles which involuntarily contracts rhythmically in a manner which is called peristalsis.
Esophagus is also known as the food pipe and is a very crucial part of our digestive system. It is preceded by the mouth and is followed by the stomach.
Peristalsis is basically a series of wave-like muscle contractions which perform the function of moving the food through the digestive tract. These movements start in the esophagus where the strong wave-like motions of the circular smooth muscles move the balls of swallowed food down to the stomach.
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based on what you observed in this lab exercise, compare the use of and the general growth seen in broths and agar plates. why might you choose one over the other type of medium in future lab exercises
By using the broth, we can identify the type of bacteria present. But using agar plates can help us learn more about certain bacteria.
Media is a material consisting of a mixture of nutrients used to grow microorganisms in culturing bacteria, fungi, and other microorganisms.
Media type:
Broth is used to grow microbes when fresh cultures or large numbers of cells are required for microbial identification.Differential media broths are used in microbial identification.Slant agar is used to grow stock cultures which can be refrigerated after incubation and maintained for several weeks.Many differential media are so skewed.Layered media are used to obtain species isolation, differential testing, and calculate bacterial densities.Learn more about media of bacteria at https://brainly.com/question/12904839
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which position of the avidian genome is the first to be executed? use the back and forth buttons to find the first gene that a curved line appears from.
The first position of the Avidian genome to be executed is position 50. In the specific ancestor organism, position 1 is identified as the instruction "w" and the execution path starts on the right of the genome.
The Avidian genome is a set of genetic instructions that dictate the behavior of a particular organism. It is exactly 50 instructions in length, and the execution path starts on the right side of the Avidian genome at position 1. In the specific ancestor organism, position 1 is identified as the instruction "w". This means that the first instruction to be executed is the last instruction in the genome, which is located at position 50. It is important to note that this information is specific to the ancestor organism, and other Avidian genome organisms may have different starting points for their execution paths.
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explain the role of the three energy systems during exercise and provide an example using track running events. which muscle fiber types are the major source of energy production during these track events?
'The three energy systems during exercise are the phosphagen system, glycolytic system, and oxidative system.
Phosphagen System: This system provides energy for short, intense bursts of activity, such as a 100-meter sprint, lasting 10-15 seconds.
Glycolytic System: This system provides energy for moderate intensity, longer duration activities, such as a 400-meter run, lasting about 45-60 seconds.
Oxidative System: This system provides energy for low to moderate intensity activities, such as a marathon, lasting several hours.
How are the energy systems used?During a 100-meter sprint, the phosphagen system is the primary source of energy, as the runner needs to generate a large amount of power and speed over a short duration.
As the duration increases, the glycolytic system becomes increasingly important, providing energy for the runner to maintain their pace over a longer distance
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how do we know that chromosomes exist in homologous pairs? select the two correct statements. how do we know that chromosomes exist in homologous pairs?select the two correct statements. the arm ratio for all chromosomes in homologous pairs is different for each individual. the length of nearly all chromosomes from somatic cells of the same species makes it possible to match the chromosomes in pairs. centromere placements of all chromosomes from somatic cells of the same species differ from each other. centromere placements of nearly all chromosomes from somatic cells of the same species allow matching the chromosomes in pairs. gametes from the same species contain the same number of pairs of chromosomes.
The length of nearly all chromosomes from somatic cells of the same species makes it possible to match the chromosomes in pairs.
Centromere placements of nearly all chromosomes from somatic cells of the same species allow the matching of the chromosomes in pairs.
What are Chromosomes?
DNA-containing structures called chromosomes are in charge of transmitting genetic information from one generation to the next. They are found in pairs in the nucleus of a cell. Each human cell contains 46 chromosomes that are divided into 23 pairs. Genes, which are DNA sequences that code for certain features like eye color, hair color, height, and other inherited traits, are found on chromosomes. Chromosomes are necessary for the healthy development and operation of an organism as well as for cell division and optimal cellular function.
A few essential components make up the chromosomes' distinct structure. There are two long arms called q arms and two short arms called p arms on each chromosome.
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what is the environmental impact of a hurricane making landfall
Answer:
Strong winds and flooding can uproot plants and kill land animals, devastating natural areas. Hurricanes may also destroy energy and chemical production facilities, gas stations, and other businesses, causing the release of toxic chemicals and pollutants into the environment.
Explanation:
Yw
why does genetic drift have more of an impact on the evolution of small populations than large ones? small populations are affected more by stabilizing selection. small populations have greater rates of mutation.
Genetic drift have more impact of evolution of small populations than larger ones because Small population are more effected by random events.
Genetic drift is the arbitrary change in the population's frequency of a gene variant that already exists. Gene variations may totally vanish due to genetic drift, which would limit genetic diversity. Additionally, it can make previously uncommon alleles far more common and even fixed. The severity of drift and the incidence of inbreeding in the population are related to population size, or more precisely, the effective population size. Due to stochastic sampling error, small populations typically lose genetic diversity more quickly than large populations (i.e., genetic drift). This is because small populations make it more likely for some gene variants to be lost as a result of random chance. Additionally, people are more inclined to breed with close relatives when the population is smaller. Individuals in closed populations will have closer ties to one another than those in the generation before.
Although inbreeding and drift have different mechanisms for the loss of genetic diversity, both have the same effects on populations. Both inbreeding and drift decrease genetic diversity, which has been linked to a higher risk of population extinction, a slower rate of population growth, a decreased capacity to adapt to environmental change, and a decreased capacity for disease resistance. These effects have an effect on the capacity of released individuals to survive and procreate in the wild.
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Complete question is:
why does genetic drift have more of an impact on the evolution of small populations than large ones?
A. small populations have greater mutation rates.
B. Small populations are more affected by stabilizing selection.
C. Small populations are more prone to migration.
D. Small populations are less affected by mutation.
E. small populations are more affected by random events.
What is the cluster of blood capillaries found in each nephron?
The cluster of blood capillaries found in each nephron is known as the glomerulus.
It's a stack of capillaries located at the morning of the nephron, and it's where filtration of the blood occurs. The glomerulus is composed of two factors the sensational arteriole, which brings blood into the glomerulus, and the efferent arteriole, which carries the filtered blood down from the glomerulus.
The glomerulus acts as a sludge, allowing small motes, similar as water and waste products, to pass through its walls and into the Bowman's capsule. The walls of the glomerulus are veritably thin, and they're lined with technical cells, called podocytes, that are responsible for filtration.
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what structural characteristic ensures a slow flow of lymph through a lymph node? why is this desirable?
The anatomical structural characteristic that allows the slow flow of lymph through a lymph node is Lymphatic vessels.
What is the role of lymph node and the types of lymphatic vessels?
The lymph nodes are to filter the lymph before it is reintroduced to the bloodstream.
Types:
Afferent lymphatic vessels carry unfiltered lymph into the node.Efferent lymphatic vessels carry the filtered lymph.Each lymph node has fewer efferent than afferent vessels, which causes a slight stagnation in lymph flow inside the node. It is desirable because it provides time for the node's macrophages to clear out antigens and other debris and for the activation of immune cells.
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suppose that on a small island off the coast of scotland, 32 percent of the population has blue eyes, which means that these individuals must be homozygous for the blue eye color gene (bb). the only other eye color found on the island is brown, and individuals that are homozygous for the brown eye color gene (bb) or heterozygous (bb) will have brown eyes because brown is the dominant gene. assume this population is in hardy-weinberg equilibrium. if 100 babies are born next year, how many of these would you expect to have brown eyes and be heterozygous?
[tex]p^2 + 2pq + q^2 = 1[/tex]The number of babies to have brown eyes and heterozygous is 49.
What is hardy-weinberg equilibrium?The Hardy-Weinberg equilibrium is a principle stating that the genetic variation in a population will remain constant from one generation to the next in the absence of disturbing factors.
[tex]p2 + 2pq + q2 = 1[/tex]
Blue eyes (bb) = 32% = 0.32
Out of 100, 32 will have blue eyes.
So, bb = 0.32
[tex]\sqrt[2]{q2}[/tex] = [tex]\sqrt{0.32}[/tex]
[tex]q[/tex] = [tex]0.566[/tex]
[tex]p+q = 1[/tex]
[tex]p + 0.566 = 1[/tex]
[tex]p = 1 - 0.566[/tex]
[tex]p = 0.434[/tex]
[tex]p^2 + 2pq + q^2 = 1[/tex]
So, heterozygous Bb = [tex]2pq[/tex]
= [tex]2 * 0.434 * 0.566 = 0.4913[/tex]
The number of babies = [tex]100 * 0.4913 = 49%[/tex]
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one end of a trna contains the _____________ while the other contains ________________.
One end of a tRNA contains the anticodon while the other contains the amino acid attachment site.
A tRNA, also known as transfer RNA, is a small RNA molecule that functions as an adapter between the mRNA sequence and the amino acid sequence that is assembled during protein synthesis. One end of a tRNA molecule contains a specific sequence of three nucleotides, called the anticodon, which recognizes and base pairs with a codon on the mRNA molecule. The other end of the tRNA contains a site where the amino acid specified by the codon on the mRNA is covalently attached. The ribosome then reads the mRNA sequence, recognizes the codon, and adds the appropriate amino acid to the growing polypeptide chain through the tRNA molecule.
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Which statement true regrading the formation of ionic bonds
Answer: I need more clarification to give a proper answer. I have nothing to base on..
Explanation: Edit this question, and add more info.
if you wanted to record a cell's rate of action potentials, where would be the best place to put your electrode to identify when an action potential occurs?
If I want to record a cell's rate of action potentials, the best place to put an electrode to identify when an action potential occurs is on the plasma membrane of the cell.
Action potentials are electrical signals that propagate along the plasma membrane of a cell and are caused by changes in the membrane potential. To detect these changes, electrodes can be placed on or near the cell's plasma membrane to measure the electrical activity.
A common method for recording action potentials is to use an extracellular electrode, which is placed outside the cell. This allows the electrode to detect the changes in the membrane potential without interfering with the normal functioning of the cell. Another approach is to use an intracellular electrode, which is inserted into the cell, but this method is more invasive and can disrupt the normal functioning of the cell.
In general, the best place to put the electrode will depend on the specific experimental setup and the type of cell being studied, but the plasma membrane is typically the most effective location for measuring action potentials.
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1. which of the following is trna's job? bring any codon to the ribosome so it can be added to the growing protein. bring any amino acid to the ribosome so it can be added to the growing protein. bring a specific amino acid to the ribosome so it can be added to the growing protein. bring a specific codon to the ribosome so it can be added to the growing protein.
Answer:
Ribosomes, Transcription, Translation
Explanation:
please use the figure of the two sets of force curves to answer the question. a higher myosin atpase activity would change the curve or curves within which set? group of answer choices
A higher myosin ATPase activity would change the curve or curves in set 2.
What is myosin?The first molecular motor, myosin, is a protein that transforms chemical energy in the form of ATP into mechanical energy to produce force and movement.
a fibrous protein that contributes to the motion of other cell types and, along with actin, helps form the contractile filaments of muscle cells. Myosins are a class of motor proteins well recognized for their functions in the contraction of muscles and a variety of other eukaryotic motility processes.
The size of the myosin heavy chain (MHC), which makes up about 25–30% of all muscle proteins, is crucial for skeletal muscle growth.
A superfamily of proteins known as myosin binds actin, breaks down ATP, and transmits force. So, the majority are found in muscle cells.
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which erythrocyte cell-surface antigens determine a person's abo blood group? multiple select question. d b a o
Antigens A and B present in the surface of erythrocytes which determine the blood group of an individual. So,correct options are a and b.
In the ABO blood group system the properties of erythrocytes are determined by the presence or absence of carbohydrate sugars(N- acetylgalactosamine and D- galactose respectively) that code for two antigens that are A and B on their cell surface. The presence or absence of these antigens purely depend upon inheritance.
Under the ABO blood group system an individual can have any one of the blood groups out of the set of four i.e group A, group B, group O and group AB.The ABO blood bunch framework is utilized to signify the presence of one, both, or neither of the An and B antigens on erythrocytes. For human blood bondings, it is the most significant of the 43 different blood classification (or gathering) arrangement frameworks right now perceived by the Global Society of Blood Bondings.
Hence, correct options are a and b.
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(Complete question) is:
which erythrocyte cell-surface antigens determine a person's abo blood group? multiple select question.
a)A
b)B
c)AB
d)O
chromosomes that are similar in length, gene content and loci, and centromere position are said to be
Homologous chromosomes are made up of chromosome pairs of approximately the same length, centromere position, and staining pattern, for genes with the same corresponding loci.
Chromosomes are often only visible under a light microscope during the metaphase of cell division (where all chromosomes are aligned in the center of the cell in their condensed form). Before this happens, each chromosome goes through a process called chromosome duplication (S phase), in which a centromere connects both copies, forming either the X-shaped structure depicted above (if the centromere is located equatorially) or a two-arm structure (if it is located distally), depending on where it is located.
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