Water molecules are drawn from areas of higher water potential to areas of lower water potential by a strong osmotic pressure, which is normally created in the compartment with the highest solute concentration, which has the lowest water potential.
Several biological activities, including the intake of water by plant roots and the control of blood volume in animals, depend on the transport of water across cell membranes.In plant cells, the central vacuole, which has a large concentration of solutes like carbohydrates and ions, is frequently the compartment with the lowest water potential. This generates a turgor pressure that aids in preserving the stiffness and shape of the cell. Depending on the individual animal cell, the compartment with the lowest water potential can change.
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Which of the following forces contribute to the stability of a DNA double helix?
A. hydrophobic interactions of bases in the same strand.
B. hydrogen bonding between bases in opposite strands.
C. hydrophobic interactions of bases in the same strand and hydrogen bonding between bases in opposite strands.
D. ionic interactions between the positively charged component of one base and the negatively charged component of the neighboring base.
E. hydrophobic interactions of bases in the same strand, hydrogen bonding between bases in opposite strands, and ionic interactions between the positively charged component of one base and the negatively charged component of the neighboring base.
Options A. hydrophobic interactions of bases in the same strand and B. hydrogen bonding between bases in opposite strands contribute to the stability of a DNA double helix.
How stabilized the molecular structure of the DNA double helix?The molecular structure of the DNA double helix is stabilized by hydrogen bonding between thymine and adenine or between guanine and cytosine in opposite strands.
Therefore, with this data, we can see that the molecular structure of the DNA double helix depends on hydrogen bonding between bases of opposite strands and also hydrophobic interactions.
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What is it called when only one copy of this allele must be present to see this trait?
Dominant. To see this phenotype, only one copy of this allele needs to be present. Gene. a section of DNA that contains the instructions for a certain feature.
Multiple alleles at each locus are often present in a population or species of organisms, among different individuals. The number of alleles (polymorphism) present or the population's fraction of heterozygotes are two ways to measure allelic variation at a locus.
A null allele is a gene variant that lacks the gene's typical function because the expressed protein is either inactive or the gene is not expressed.
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oocytes complete meiosis ii before they are fertilized. T/F
False. Oocytes complete meiosis II after they are fertilized, not before. When a sperm cell fertilizes an oocyte, the oocyte completes meiosis II, producing a mature ovum and a second polar body.
What is the difference between oocytes and oogonia?Oogonia and oocytes are two different types of cells that are involved in the development of female gametes (eggs). Oogonia are the diploid (2n) stem cells that give rise to the primary oocytes. On the other hand, primary oocytes are the immature, diploid (2n) cells produced from oogonia.
What happens after the ovum is fertilized?
After the ovum (mature egg cell) is fertilized, a sperm cell formation of the zygote occurs. The zygote begins to divide by mitosis in a process called cleavage which then forms blastula. The blastula moves down the fallopian tube and into the uterus, where it implants in the uterine wall.
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Where are photosystem 1 and 2 located?
PS I and PS II are photosystems located in the thylakoid membranes of chloroplasts. Photosystems are in charge of the photochemical phase or light reaction of photosynthesis.
PS II is found in the inner grana thylakoids. PS I is found on the surface of grana thylakoids and stroma thylakoids. Photosystem I (PSI) is a multisubunit protein complex found in the thylakoid membranes of green plants and algae, where it commences one of the earliest steps in the conversion of solar energy via light-driven electron transport.
Photosystem II (or water-plastoquinone oxidoreductase) is the first protein complex in oxygenic photosynthesis's light-dependent processes. It is found in plants, algae, and cyanobacteria's thylakoid membrane.
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How does Leigh syndrome affect cellular respiration?
Leigh Syndrome is a rare genetic disorder that affects the central nervous system and its associated organs, including the brain, muscles, and heart.
Specifically, Leigh Syndrome impairs the ability of mitochondria to produce ATP, the energy source for most cells. This results in an energy deficit, leading to decreased energy production, which ultimately affects various cellular processes and can cause cell death.
It is caused by a malfunction in the cells responsible for energy production, such as those involved in cellular respiration.
It is caused by mutations in genes that are responsible for the production of proteins that are essential for cellular respiration. Cellular respiration is the process by which cells produce energy in the form of ATP (adenosine triphosphate) from the breakdown of glucose.
The mutations that cause Leigh syndrome disrupt the function of the mitochondria, the organelles that are responsible for cellular respiration. As a result, the cells are not able to produce enough ATP to meet their energy needs. This leads to a wide range of symptoms, including muscle weakness, movement disorders, and difficulty breathing.
In addition to affecting the central nervous system, Leigh syndrome can also affect other organs and tissues, such as the heart, liver, and kidneys. The severity of the disorder can vary from person to person, and there is currently no cure for Leigh syndrome.
Treatment typically focuses on managing the symptoms and providing supportive care to help improve the quality of life for those affected by the disorder.
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What is radius and ulna labeled?
Of the following list, which 3 items are required for DNA replication?NucleotidesPolymeraseTemplate
DNA replication requires the presence of nucleotides, polymerase, and a template in order to successfully duplicate the DNA molecule and ensure its accuracy and stability. Here option D is the correct answer.
Nucleotides: Nucleotides are the building blocks of DNA and are made up of a nitrogenous base, a sugar molecule, and a phosphate group. During replication, nucleotides are combined to form new DNA strands, with each nucleotide in the new strand matching the nitrogenous base in the template strand.
Polymerase: Polymerase is an enzyme that catalyzes the addition of nucleotides to the growing DNA strand. It recognizes the template strand, adds complementary nucleotides, and helps to ensure the accuracy of replication.
Template: The template strand is used as a pattern for the new DNA strand to follow during replication. The template strand provides the necessary information to ensure that the new strand is a faithful copy of the original DNA molecule.
Complete question:
Of the following list, which 3 items are required for DNA replication?
A - Nucleotides
B - Polymerase
C - Template
D - All of these
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Which is the primary organ of digestion and absorption of food?
The small intestine is the primary organ of digestion and absorption of food.
It is a long, narrow tube that is approximately 20 feet in length and is divided into three regions: the duodenum, jejunum, and ileum. The small intestine is lined with millions of tiny finger-like projections called villi, which increase the surface area available for absorption.
The inner surface of the small intestine is also covered with microvilli, which further increase the surface area. During the process of digestion, food is broken down into smaller molecules by various enzymes produced by the pancreas and small intestine.
These molecules are then absorbed into the bloodstream through the walls of the small intestine. The small intestine absorbs the majority of the nutrients from food, including carbohydrates, proteins, fats, vitamins, and minerals.
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the banding patterns of the dna fragments reveal that___________.
The banding patterns of the DNA fragments basically reveal that the mother cannot be the biological parent of all three children.
What exactly do you mean by DNA?
DNA stands for deoxyribonucleic acid. It is a molecule found in the nucleus of cells that carries genetic instructions for the development, functioning, growth and reproduction of all known living organisms. DNA is composed of two strands of nucleotides that are connected by chemical bonds and form a “double helix” structure. DNA is responsible for the transfer of genetic information which is essential for the growth and development of living organisms.
Banding patterns of DNA fragments are used to compare genetic material between two individuals. If the banding patterns of the DNA fragments from the mother and the children do not match, then it is not possible that the mother is the biological parent of all three children. This is because the genetic makeup of the mother and the children must match in order for her to be the biological parent.
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Complete question:
The banding patterns of the DNA fragments reveal that
a. child 1 and child 2 cannot be biological siblings
b. child 1 and child 3 probably look like the mother
c. the mother cannot be the biological parent of all three children
d. the mother's DNA has the same DNA sequence as the father's DNA
e. child 2 and child 3 inherited all of their DNA from the father
what are the three different type of phalanx bones that make up your foot?
Long bones in the foot distal to the metatarsals are called phalanges. Each toe has three phalanges, referred to as the proximal, middle, and distal phalanges.
In addition to being significantly shorter individually than the metatarsals, the phalanges on the foot are also much shorter collectively than those on the hand. The metatarsophalangeal joints are formed by the bases of the proximal phalanges articulating with the heads of the corresponding metatarsal bones.
The proximal interphalangeal joints are formed by the heads of the proximal phalanges articulating with the bases of the middle phalanges. The articulations between the bases of the distal phalanges and the heads of the middle phalanges define the distal interphalangeal joints.
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of all the species that enzymes bind, they are thought to bind most tightly to _____.
It is believed that Transition states are the species to which enzymes attach most strongly.
Which is the one an enzyme binds to more firmly?In the transition stage of the reaction that the enzyme catalyzes, a substrate is intended to bind to an enzyme most tightly.The catalytic mechanism is the resultant decrease in the reaction's activation energy.
What interactions do the enzymes have when they bind?The binding of the substrate to the enzyme involves noncovalent connections such as hydrogen bonds, electrostatic attractor pressures, hydrophobic bonds, and van der Waals interactions.
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What temperature do brine shrimp prefer?
Brine shrimp prefer water temperatures between 25 and 35 degrees Celsius. At temperatures below 25 degrees, the shrimp will not be able to reproduce, and at temperatures above 35 degrees they may die.
Brine shrimp prefer a temperature range of 25°C to 30°C (77°F to 86°F).
It is important to maintain a stable temperature within this range, as fluctuations can be harmful to the brine shrimp. A thermometer should be used to regularly monitor the temperature of the water in which the brine shrimp are living. If the temperature falls outside of the preferred range, a heater or chiller can be used to adjust it accordingly.
It is also important to note that brine shrimp can tolerate temperatures outside of their preferred range for short periods of time, but prolonged exposure to temperatures outside of this range can be detrimental to their health.
In summary, brine shrimp prefer a temperature range of 25°C to 30°C (77°F to 86°F) and it is important to maintain a stable temperature within this range for the health and well-being of the brine shrimp.
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What organelles is like a gel like fluid?
The cytoplasm is the gel-like fluid that fills the interior of the cell. It serves as a medium for chemical reactions. It serves as a platform for other organelles to function within the cell.
Except for the cell nucleus, the cytoplasm is all of the material within a eukaryotic cell that is surrounded by the cell membrane. The nucleoplasm is the substance found inside the nucleus and confined within the nuclear membrane. The cytoplasm's basic components are cytosol (a gel-like fluid), organelles (internal substructures of the cell), and other cytoplasmic inclusions. The cytoplasm is composed of around 80% water and is normally colorless.
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Who what is the audience for emperor Hirohitos decoration of war
Emperor Hirohito's decoration of war, which occurred during World War II, was aimed primarily at the Japanese military and government officials who were involved in the war effort.
What is the audience for emperor Hirohitos decoration of war?
The decorations were awarded to Japanese soldiers and civilians who were deemed to have performed outstandingly in service to the country and in furtherance of the war effort.
In addition to military personnel, the audience for these decorations would have included members of the general public who were supportive of Japan's involvement in the war, as well as politicians and other government officials who were involved in decision-making related to the war.
It's worth noting, however, that the audience for these decorations would not have been universal. Many Japanese citizens were critical of the war effort, and some actively opposed it. Similarly, the decorations would not have been recognized or valued by the many people who were negatively affected by Japan's military actions, including those who were captured, enslaved, or killed by Japanese forces.
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How does the respiratory system provide oxygen to the body quizlet?
The respiratory system is responsible for providing oxygen to the body. It does this through the process of inhalation and exhalation. Here are the steps involved in this process:
1. Inhalation: During inhalation, the diaphragm and the muscles between the ribs contract, causing the chest cavity to expand. This creates a vacuum that pulls air into the lungs through the nose and mouth.
2. Oxygen exchange: As the air enters the lungs, it passes through the bronchi and into the alveoli, which are small sacs that are surrounded by capillaries. Here, oxygen from the air diffuses into the bloodstream through the walls of the capillaries.
3. Transport of oxygen: Once the oxygen is in the bloodstream, it is carried to all the cells in the body by the red blood cells.
4. Exhalation: After the oxygen has been delivered to the cells, the red blood cells pick up carbon dioxide, which is a waste product of cellular respiration. The carbon dioxide is then transported back to the lungs, where it diffuses into the alveoli and is exhaled out of the body.
Overall, the respiratory system plays a crucial role in providing oxygen to the body and removing waste products like carbon dioxide. Without the respiratory system, the body would not be able to carry out essential functions like cellular respiration and energy production.
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A trace fossil tells us?
O an animal looked like
O what a plant looked like
O how an organism died
O how an organism lived
herbivory on brassica plants can induce the production of defensive chemicals such as glucosinolates. for example, one of the effects of these chemicals is to inhibit the growth of plant-eating caterpillars. explain other ways in which they can provide a defense for plants from being eaten?
In addition to inhibiting the growth of plant-eating caterpillars, they can provide a defense for plants in several other ways: Repelling Herbivores, Toxicity, Inducing Physical Defenses and Inducing Systemic Resistance.
Glucosinolates are a class of chemical compounds found in many plants, including brassicas, that can serve as a defense mechanism against herbivory.
Repelling Herbivores: Glucosinolates can act as a deterrent to herbivores due to their bitter taste and strong odor. Many herbivores, such as insects, will avoid consuming plants that contain high levels of these compounds.
Toxicity: When Glucosinolates are broken down, they can form toxic compounds such as isothiocyanates that can be harmful to herbivores. This can lead to reduced feeding and growth rates, and in some cases, even death.
Inducing Physical Defenses: The presence of glucosinolates can also induce physical defenses in plants, such as thicker cell walls and increased lignin production, which can make it more difficult for herbivores to consume the plant.
Inducing Systemic Resistance: The production of glucosinolates can also induce systemic resistance in plants, which is a type of immune response that helps protect the plant from future herbivory.
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the movement of water down its concentration gradient is called?
Osmosis is the method through which water moves down a gradient of concentrations.
What is during osmosis?Over a semipermeable membrane, osmosis is the procedure by which a solvent is transferred between two solutions with different solute concentrations. Osmosis is the procedure by which the same solvent is transported from of the liquid with the highest solute concentration to the solution the with lowest.
What is osmosis mean in biology?Introduction. Osmosis, which means "pushing" in Greek, is the net passage of water through a semipermeable barrier. [1] [2] Water will often flow from a region having lower concentration to a low of small concentrations through this membrane.
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What plants have a symbiotic relationship with nitrogen fixing bacteria?
The plants that have a symbiotic relationship with nitrogen-fixing bacteria are leguminous plants, such as beans, peas, lentils, alfalfa, clover, and soybeans.
Rhizobia, the nitrogen-fixing bacteria, form nodules on the roots of the leguminous plants, where they convert atmospheric nitrogen gas into a form of nitrogen that the plant can use to grow. In exchange, the bacteria receive a supply of energy and nutrients from the plant.
This mutualistic relationship is beneficial for both the plant and the bacteria, as it allows the plant to obtain the essential nitrogen it needs for growth and the bacteria to access the carbon compounds it needs for energy.
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List 5 internal organs human have
Answer:
Explanation:
brain, heart, lungs, pancreas, intestine...
Answer: brain, the heart, the lungs, the kidneys, and the liver
Explanation: The 5 vitals organs from humans
What bacteria are not prokaryotes?
All the bacteria belong to prokaryotes so there are no such bacteria considered not prokaryotes. This is because of their morphology and genetic characteristics they all are prokaryotes.
Prokaryotes are organisms that are simple and unicellular. These organisms do not have a nucleus or nuclear arrangement. They also do not have different membrane-bound organelles like eukaryotes. Their genetic material is mostly arranged in the form of nucleoids that contains DNA.
Bacteria and Archaea are examples of prokaryotes. Since all bacteria have this characteristic, they are all prokaryotes. But we cannot consider all prokaryotes as bacteria because this group also contains Archaea.
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The figure shows four stages of a telomere shortening. What is the correct sequence of stages from youngest to oldest?A.1, 3, 2, 4B.3, 2, 1, 4C.3, 4, 1, 2D.2, 1, 4, 3
Thus, G1 S G2 M is the correct order of the cell cycle phases. The telomere sequence in humans is TTAGGG. This sequence can have up to 15,000 base pairs and is typically repeated about 3,000 times.
What three processes go into the production of DNA?Any macromolecule's synthesis goes through three stages: initiation, elongation, and termination. The same is true with DNA replication. DNA synthesis starts at a specific location known as a source of replication during initiation.
What happens in step four of DNA replication?A separate enzyme called DNA ligase combines the Okazaki fragments to create a single, cohesive strand. The ends of the a linear DNA present a problem because DNA polymerase only could add nucleotides in the 5′ to 3′ orientation. At the end of parent strands are repeated DNA sequences known as telomeres.
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The process of making glucose from noncarbohydrate sources is called:
The process of making glucose from non-carbohydrate sources is called gluconeogenesis.
Gluconeogenesis is a complex metabolic pathway that occurs primarily in the liver and kidneys of mammals, and it plays a critical role in maintaining blood glucose levels during fasting and prolonged periods of exercise.
Glucose is the primary energy source for the body, and it is required for the proper functioning of the brain and other organs. When the body does not have access to dietary sources of glucose, such as during fasting or prolonged exercise, it must turn to alternative sources to maintain blood glucose levels.
Gluconeogenesis is the process by which the body converts non-carbohydrate sources, such as amino acids, lactate, and glycerol, into glucose. This process involves a series of enzymatic reactions that take place in the liver and kidneys and requires the input of energy in the form of ATP and other cofactors.
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during the isovolumetric relaxation phase of the cardiac cycle, _______.
The aortic and pulmonary valves close as the ventricles are relaxed during the isovolumetric relaxation phase of the cardiac cycle.
What transpires during the cardiac cycle's isovolumetric relaxation stage?d-e isovolumetric relaxation The aortic and pulmonary valves close, creating the second heart sound, when the ventricular pressures fall below the diastolic aortic and pulmonary pressures (80 mmHg and 10 mmHg, respectively) (point d). The start of diastole is indicated by this.
When undergoing isovolumetric relaxation, are all four valves closed?Sarcoplasmic reticulum, which is in charge of quickly re-sequestering calcium after contraction, controls this relaxation considerably (see excitation-contraction coupling). Volumes do not change during this period even when ventricular pressures are decreasing since all valves are closed.
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you are investigating pink peony genetics and finding a portion mRNA sequence that may code for the protein that causes the pink color. The specific portion of an mRNA molecule has the sequence 5'AUGCCACGUUGAC-3' what is the predicte amino acid sequence does this code?
The predicted amino acid sequence that this mRNA sequence codes for is: Methionine - Proline - Arginine.
What is an Amino acid sequence?An amino acid sequence is the order of amino acids that are linked together in a protein or polypeptide chain. Proteins are made up of long chains of amino acids that are joined together by peptide bonds. Each amino acid has a unique side chain, or "R group," that confers specific properties to the amino acid, such as hydrophobicity, charge, or polarity.
The given mRNA sequence 5'AUGCCACGUUGAC-3' contains the following codons:
AUG - CCU - CGU - UGA
These codons correspond to the following amino acids:
Methionine - Proline - Arginine - Stop
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pattern.
Cross a blue fish (BB) with a yellow fish (YY). Color code
the Punnett square based on the resulting phenotypes if
these fish follow the codominance inheritance pattern.
The cross between a blue fish (BB) with a yellow fish (YY) to form all the heterozygous green fishes in the F1 generation.
What is Codominance?Codominance is an exception of the Mendel's law of genetics, which refers to a type of inheritance in which both the versions or alleles of the same gene are expressed separately in the offspring to yield different traits in an individual from that of their parent.
Parents BB X YY
All the progenies will be heterozygous green fishes.
Genotype and Phenotype = 100% Heterozygous (BY) fishes
The punnett square is attached with the answer.
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endospores survive a variety of harsh conditions in part because of the presence of
Endospores survive a variety of harsh conditions in part because of the presence of dipicolinic acid.
Dipicolinic acid plays a vital role in the spore's ability to withstand extreme conditions, by binding to and stabilizing the spore's DNA and other cellular components, thus protecting them from damage or degradation.
Dipicolinic acid also helps to dehydrate the spore, reducing its metabolic activity and further increasing its resistance to harsh conditions.Additionally, endospores contain high levels of calcium ions, which bind to and stabilize the spore's cell wall and other cellular components, contributing to its resilience and resistance to environmental stressors.
Overall, the unique and specialized structure of endospores, including the presence of dipicolinic acid and other protective components, allows them to endure a wide range of harsh conditions and remain viable for extended periods, making them important in various fields, including biodefense, food safety, and environmental remediation.
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Endospores survive a variety of harsh conditions in part because of the presence of _______.
hemoglobin serves as a buffering agent in the human blood by acting as a weak acid and a weak base. how does this property of hemoglobin help the human body?
The buffering capacity of hemoglobin plays an important role in maintaining the pH of blood within a narrow range that is optimal for the proper functioning of enzymes and other physiological processes in the human body.
Hemoglobin is a protein found in red blood cells that is responsible for binding to and transporting oxygen from the lungs to the tissues throughout the body. When hemoglobin binds to oxygen, it undergoes a conformational change that makes it more acidic.
This means that it can donate hydrogen ions to help neutralize excess acid in the blood. Conversely, when hemoglobin releases oxygen to the tissues, it becomes more basic, and can accept hydrogen ions to help neutralize excess base in the blood. By acting as a weak acid and a weak base, hemoglobin helps to prevent large changes in blood pH, which can be harmful to the body.
This property of hemoglobin is particularly important in the context of exercise, as the production of lactic acid during intense physical activity can cause a drop in blood pH. The buffering capacity of hemoglobin helps to prevent this drop in pH, allowing the body to continue to function effectively during exercise.
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which biological macromolecule does not polymerize using a condensation reaction?
Lipids are biological macromolecules that do not polymerize using a condensation reaction.
While lipids are considered to be macromolecules, they are not formed through the same process as other macromolecules such as carbohydrates, proteins, and nucleic acids. Unlike these macromolecules, lipids are not built up through a series of repeating subunits, and they do not undergo a condensation reaction to form larger structures.
However, lipids are not formed through a condensation reaction. Lipids are a diverse group of biomolecules that are not characterized by a common repeating subunit, unlike other macromolecules. Lipids are typically composed of glycerol and fatty acids, and they are synthesized through a process called esterification, which does not involve a condensation reaction.
During esterification, a carboxyl group from a fatty acid molecule reacts with a hydroxyl group from glycerol, resulting in the formation of an ester bond. This process can be repeated with additional fatty acids and glycerol molecules to form complex lipids such as triglycerides, phospholipids, and cholesterol esters.
Overall, lipids are the only biological macromolecule that does not polymerize using a condensation reaction. Instead, they are formed through esterification, a process that involves the formation of ester bonds between fatty acids and glycerol.
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What is skeletal muscle mainly composed of?
Skeletal muscle mainly composed of muscle fibers.
One of the three important muscle tissues in the human body is found in the skeleton. Thousands of muscle fibers are encased in connective tissue sheaths to form each skeletal muscle. Fasciculi are the individual bundles of muscular fibers that make up skeletal muscles.
Each muscle fiber has many nuclei that are distributed across the fiber's periphery. Myofibrils, the fundamental units of the muscle fiber, are the next level of subdivision for each muscle fiber.
Sarcomeres, which are striated subunits of the myofibrillar proteins actin and myosin, make up the skeletal muscles.
Skeletal muscle's primary duties include contracting to provide movement, maintaining posture and position, regulating body temperature, storing nutrients, and stabilizing joints.
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