a) Anorexia has a significant mortality rate is true.
b) Anorexia may follow failure to lose weight in a more controlled fashion is true.
Anorexia nervosa, more commonly known as plain "anorexia," is a severe eating disorder. Anorexic people don't eat enough and have a strong dread of gaining weight. Although the word "anorexia nervosa" refers to "no appetite, brought on by uneasiness," the majority of anorexics experience hunger, but they go to great lengths to suppress it, frequently to the point of starving.Although it isn't always the case, anorexia typically starts around adolescence, frequently as puberty begins and body types alter. Adolescent girls and young women are more likely to get it, but young men can also get it.To know more about anorexia check the below link:
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match each cell type with its description a. stains with acidic dye eosin, has histamine and major basic protein in granules, and facilitates responses to protozoa and helminths b. recognizes abnormal cells, binds to them, and releases perforin and granzyme molecules, which induce apoptosis c. large agranular phagocyte that resides in tissues such as the brain and lungs d. stains with basic dye methylene blue, has large amounts of histamine in granules, and facilitates allergic responses and inflammation select 1. natural killer cells select 2. basophil select 3. macrophage select 4. eosinophil
Based on their general appearance, cells are categorized into 4 main cell type groups. Epithelial cells Endothelial cells either (3) neuronal or (4) fibroblast.
Matched here the properties of the four cells;a) Eosinophil enhances responses to protozoa and helminths by staining with the acidic dye eosin, having histamine and the main basic protein in granule form.
b) Identifies aberrant cells, attaches to them, and releases the chemicals perforin and granzyme, which together with natural killer cells cause apoptosis in the target cells.
c) A sizable, agranular phagocyte that coexists with macrophage in areas like the brain and lungs.
d) Stains with the basic dye methylene blue, contains significant amounts of histamine in its granules, and promotes basophil inflammation and allergic reactions.
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what is the reaction rate for enzyme catalase which speeds up h2o2>h2o+o2 (the temp is 30 but what is reaction rate)
Answer:
catalyses
Explanation: an enzyme that brings about (catalyzes) the reaction by which hydrogen peroxide is decomposed to water and oxygen.
which of those three components do we have control over what are the three components of daily energy expenditure
Basal metabolic rate, physical activity, and thermic effect on food are the three factors that make up daily energy expenditure.
The energy required to maintain essential bodily processes is known as the basal metabolic rate.
Muscle movement requires energy, which comes from physical exertion. The energy required to metabolize food is known as the thermic effect on food.
The component that we can influence is physical activity (30–50%). Energy use from physical activity, such as shivering and fidgeting, as well as intentional physical exercise are all included in this component. As a component of physical activity, deliberate exercise (both acute and chronic) has been demonstrated to affect resting energy expenditure (basal metabolic rate and thermic effect on food).
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What is the relationship between sequence similarity and sequence identity?
The main distinction between similarity & identity in the target sequence is that whereas identity refers to the number of characters that perfectly match in two separate sequences, similarity refers to the similarity between the two sequences in comparison.
A phrase that has been used to describe how similar two or even more nucleotide sequences are, usually about the percentage of identity.
Sequence resemblance by employing alignment to a query sequence, searching is a technique for searching sequence databases.
For nucleotide sequences, the terms sequence identity and sequence similarity are interchangeable. But the two ideas are fundamentally unlike when it comes to protein sequencing. Sequence identity in protein sequence alignment refers to the proportion of identical amino acid residue matches between 2 aligned sequences.
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you have two true-breeding rose bushes, one with red flowers and one with white flowers. a cross between these two roses yields a bush with pink flowers. the pink flower color is an example of
A trait has a polygenic inheritance pattern when the expression of that trait is influenced by two or more pairs of alleles. Polygenic inheritance is a type of non-Mendelian pattern of heredity, meaning it deviates from the Mendelian Laws.
Hemoglobin, a component of red blood cells that carries oxygen to every cell in the body, is a set of illnesses called sickle cell disease. Hemoglobin S, an abnormal hemoglobin molecule found in those with this illness, can cause red blood cells to assume a sickle or crescent shape. (Blending) Heterozygous individuals have the trait of incomplete dominance. The color of one's hair serves as an illustration. (Observe both qualities) Codominance is the production of both homozygous traits in heterozygous people.
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the epinephrine signaling pathway plays a role in regulating glucose homeostasis in muscle cells. the signaling pathway is activated by the binding of epinephrine to the beta-2 adrenergic receptor. a simplified model of the epinephrine signaling pathway is represented in figure 1.
Epinephrine signaling pathway involves enzymes activating other enzymes. It is a series of steps in which a hormone binds to the epinephrine receptor present on the surface of the cell.
Adrenaline is also known as epinephrine which is used as emergency medical hormone in case of severe allergic situations. Epinephrine binds both alpha and beta adrenergic receptors to cause vasoconstriction and vasodilation. It triggers a signal transduction cascade involving production of the second messenger molecule cyclic AMP (cAMP). The role of adenylyl cyclase in the epinephrine signaling pathway is that it accelerates the production of a second messenger. The intracellular concentration of glycogen will increase due to the irreversible binding of GDP to the G protein.
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To refer to complete question, see below:
The epinephrine signaling pathway plays a role in regulating glucose homeostasis in muscle cells. The signaling pathway is activated by the binding of epinephrine to the beta-2 adrenergic receptor. A simplified model of the epinephrine signaling pathway is represented in Figure 1. Based on Figure 1, which of the following statements best describes the epinephrine signaling pathway?
What are the 4 parts of naturalization test?
Answer: The English test has three components: reading, writing, and speaking.
Explanation:
a student is staring directly at a bird outside the classroom window. the image of the bird will be detected by which lobe of the brain?
A student is fixedly looking out the window of the classroom at a bird. The fovea centralis, a tiny pit at the very center of the macula lobe that is bordered with densely packed,
The macula lobe lutea, a tiny, flat patch situated precisely in the middle of the posterior region of the retina, contains the fovea centralis. The heavily saturated with cone photoreceptors since it is responsible for bird high-acuity vision. The foveae of the retinae are responsible for the superior visual acuity that humans possess. We refer to a person's eyesight clarity as visual acuity. Your retina's fovea is therefore receiving the visual picture of the bird you are currently seeing.
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explain how dna extraction, pcr, and restriction enzymes were used to get the samples we used for the this gel electrophoresis lab.
Gel electrophoresis is typically used to view (make visible) the outcomes of a PCR process. Using a technique called gel electrophoresis, DNA fragments are separated based on size as they are drawn through a gel matrix by an electric current.
The sample is first heated to cause the DNA to denature, or separate into two pieces of single-stranded DNA, in order to amplify a section of DNA using PCR. Then, using the original strands as templates, an enzyme known as "Taq polymerase" creates two new strands of DNA.
Restriction Gel & Enzyme Digest DNA can be selectively broken into fragments by restriction enzymes and then separated on an agarose gel according to fragment size, as seen by electrophoresis. Since DNA has a negative charge, an electric current.
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given that about 25% of the mammalian genome is associated with genes, including introns and regulatory sequence, what would be the approximate average length of dna per gene if the genome contained 20,000 genes?
About 40000 base pairs of DNA per gene if the genome contained 20,000 genes.
A gene is the fundamental physical and purposeful unit of heredity. Some genes act as instructions to make molecules referred to as proteins. but, many genes do now not code for proteins.
Our genes incorporate instructions that inform your cells to make molecules referred to as proteins. Proteins perform various features on our body to keep us healthy. Every gene includes commands that determine your functions, together with eye color, hair shade, and height.
Few genes act as commands to make molecules referred to as proteins. In human beings, genes vary in length from a few hundred DNA bases to extra than 2 million bases.
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What is the relationship between amino acids and nucleotides?
A codon is a nucleotide triplet that codes for an amino acid so that every trio of nucleotides codes for one amino acid is the relationship between amino acids and nucleotides.
The code is degenerate because there are only 20 amino acids and 64 combinations of four nucleotides taken three at a time (more than one codon per amino acid, in most cases). The structural constituents of proteins are known as amino acids. On the other hand, nucleotides are the constituent parts of DNA and RNA, two types of nucleic acids. As a result, this is the primary distinction between amino acids and nucleotides.
By following a set of instructions known as the genetic code, mRNA converts the nucleotide sequence of a gene into the amino acid sequence of a protein.
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When venous return is increased, stretch receptors in the atria of the heart are activated. this results in: ________
When venous return is increased, stretch receptors in the atria of the heart are activated. This results in: the inhibition of ADH secretion.
Heart is the organ if the circulatory system that is involved in the pumping of blood to he whole body. the humans heart is composed of 4 chambers, upper two atria and lower two ventricles. The heart keeps the oxygenated and deoxygenated blood separated.
ADH is the abbreviation for Anti-diuretic Hormone. It is also known by the name vasopressin. the hormone performs two functions: constriction of blood vessels and maintain the osmolarity of the body by regulating the amounts of water and salts.
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Nancy is in her early 60s and nervous about growing old because she doesn’t want to be limited in her daily functioning or lose her memory or judgement. how might you reassure nancy about her fears?
We might reassure nancy about her fears as Mental decline is not inevitable; while 10% will foster dementia in the course of their life, not exactly 50% of individuals above age 84 will have it.
A group of symptoms that severely affect your ability to remember, think, and interact with others is known as dementia. There is no particular sickness that causes dementia; However, dementia can be caused by a number of diseases. A common symptom of dementia is memory loss, but it can be brought on by a number of different things.
A disorder known as dementia is characterized by a collection of symptoms that typically arise in response to damage or disease to the brain. The signs and symptoms include progressive impairments in memory, thinking, and behavior that make it hard for a person to function and do things every day.
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The part of a bacterial cloning vector that contains many restriction enzyme recognition sequences is called a?
The piece of the bacterial cloning vector that contains numerous limitation compound acknowledgment groupings is known as the beginning of replication.
The beginning of replication is a grouping of DNA at which replication is started on a chromosome, plasmid, or infection. For little DNAs, including bacterial plasmids and little infections, a solitary beginning is adequate. DNA replication starting points are described fundamentally by three sorts of designs: (1) destinations for restricting proteins, principally commencement and helper proteins, (2) a distinctively AT-rich locale that is loosened up, and (3) locales and underlying properties engaged with managing inception occasions. Starting points of replication are characterized as chromosomal locales where twofold abandoned DNA loosens up to frame single-abandoned DNA layouts for genome duplication. Hereditarily, the cis-acting arrangements that decide the areas of replication inception occasions are named replicators.
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under sympathetic activation, the heart rate increases with the release of the neurotransmitter ? T/F
.
The statement, under sympathetic activation, heart rate increases with neurotransmitter release, is true.
For, the release of neurotransmitters such as adrenaline and noradrenaline from the sympathetic nervous system causes the heart to increase its rate. These neurotransmitters stimulate the heart to beat faster and harder, allowing a greater supply of oxygenated blood to the body's organs and muscles.
The Effect of Sympathetic Activation on Heart RateThe sympathetic nervous system is an important part of the nervous system that regulates the body's reactions to stressful and anxious situations. This increases:
Heart rateBreathing rateBlood pressureBlood flowIn addition, sympathetic activation also triggers a cascade of changes in the body, such as dilation of the blood vessels to allow for increased blood flow. This allows the muscles to relax, which enables the body to better perform its basic functions.
The effect of sympathetic activation on the heart rate also helps prepare the body for a fight or flight response, allowing it to respond to stressful situations more effectively.
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Which piece of evidence indicates that a chemical reaction has occurred?
Question 1 options:
melting of a substance
boiling of a substance
formation of a precipitate
freezing of a substance
Brown tree snakes caused 10 out of the 11 native bird species in guam to go extinct. Identify what this example would be a loss of.
An example of loss from the extinction of native birds in Guam is due to brown tree snakes, there are no more organisms to help pollinate plants. Birds are important for pollination to disperse seeds around Guam's forests.
The brown tree snake is responsible for the extinction of nine out of 12 of Guam's forest bird population. The brown tree snake, Boiga irregularis is arboreal, meaning it spends most of its life in trees or on the ground.
The invasive brown snake tree population has caused enormous ecological damage to Guam. Since 2010, these invasions have killed nine of the island's twelve forest bird populations.
Birds are usually a small part of forest life but are important for pollination, seed dispersal in forests, and control of herbivorous insects. Guam, an island 30 miles long and 5 to 15 miles wide about 3,800 miles west of Hawaii, lost most of its native birds after the brown tree snake was accidentally introduced from the Admiralty Islands after World War II.
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the enzyme acetylcholinesterase, located in the synaptic cleft and on the postsynaptic membrane, breaks ach down into acetate and choline, thereby stopping the stimulation of a postsynaptic cell. t or f
True
What is enzyme ?
Proteins called enzymes serve as biological catalysts by quickening chemical processes. Substrates are the compounds that enzymes may interact with.
True, the enzyme acetylcholinesterase, located in the synaptic cleft and on the postsynaptic membrane, breaks ach down into acetate and choline, thereby stopping the stimulation of a postsynaptic cell
Acetylcholine is necessary for the body's signalling of cells and the passage of information.
The transmission between nerve cells is blocked when acetylcholine is degraded.
Inhibitors are present, which maintains the usual amount of acetylcholine in the body, preventing its breakdown and maintaining nerve cell transmission.
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Rats colonize an archipelago in the Pacific Ocean where no rats previously existed. The rats can have white fur, gray fur, or black fur. Predict what type of selection is likely to occur when each of the following phenotypes have the greatest fitness.
- grey fur
- dark fur
- dark fur in fields and light fur in forests
- light fur
- dark fur on one island, light fur on another
Undergoing a bottleneck can greatly reduce the genetic variation in a population.
In genetics, a phenotype is the set of observable traits or characteristics of an organism. The term includes the morphology or physical form and structure of an organism, its developmental processes, its biochemical and physiological properties, its behavior, and its products of behavior.
Phenotypes include size, wing length, and coat color. Phenotype also includes observable traits that can be measured in the laboratory. B. Hormone levels or blood cells.
Genotype is the DNA sequence unique to that person. More specifically, the term refers to the two alleles that an individual inherits for a particular gene. A phenotype is the detectable expression of that genotype i.e the patient's clinical symptoms.
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given that about 25% of the mammalian genome is associated with genes, including introns and regulatory sequence, what would be the approximate average length of dna per gene if the genome contained 20,000 genes?
If the genome contained 20,000 genes, the average length of DNA per gene will be 40,000 base pairs.
What is the average length of DNA per gene?Only 2.5% of the human genome is protein-coding. Introns make up the remaining 97.5%. The male nuclear diploid genome is 6.27 Gigabase pairs (Gbp), 205.00 cm (cm) long, and 6.41 picograms in weight (pg). Female measurements are 6.37 Gbp, 208.23 cm, and 6.51 pg.
For a 25% mammalian genome with 20,000 genes, the total number of base pairs, which is the length of DNA per gene, will be approximately double the amount of genes contained in the genome, in this case 40,000.
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The following options are all reproductive barriers. which one is an example of a prezygotic barrier in which the two different species do mate?
a. Two dragonfly species regularly mate, but their gametes are incompatible.
b. No zygote is formed, but mating does occur.
The following options are all reproductive barriers. which one is an example of a prezygotic barrier in which the two different species do mate:
Two dragonfly species regularly mate, but their gametes are incompatible.No zygote is formed, but mating does occur.A prezygotic barrier prevents members of different species from mating to produce a zygote, a single-celled embryo. Here are some example scenarios This is called habitat isolation. Prezygotic barrier A mechanism that prevents fertilization and reproduction.
A postzygotic barrier is a mechanism that blocks reproduction after fertilization and zygote formation. There are two main classifications of reproductive barriers prezygotic barriers and postzygotic barriers. This is called habitat isolation.
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Why is it important to monitor environmental parameters when making policy decisions?
to manage and minimize the impact an organization's activities have on an environment.
The main objective of environmental monitoring is to manage and minimize the impact an organization’s activities have on an environment, either to ensure compliance with laws and regulations or to mitigate risks of harmful effects on the natural environment and protect the health of human beings.
As human population, industrial activities, and energy consumption continues to grow, the continued development of advanced, automated monitoring applications and devices is crucial for enhancing the accuracy of environmental monitoring reports and the cost-effectiveness of the environmental monitoring process.
Monitoring programs are published outlines within an organization that detail precisely which elements are being monitored, overall objectives, specific strategies, proposed sampling methods, projects within each strategy, and time frames.
Environmental monitoring products and environmental monitoring software, such as Environmental Data Management Systems (EDMS), facilitate the implementation and monitoring of environmental monitoring and assessment programs, which includes a central data management hub, automated environmental monitoring alerts, compliance checking, validation, quality control, and generation of reports on dataset comparisons.
Environmental Monitoring Types
The three main types of environmental monitoring are soil, atmosphere, and water. Techniques for scanning and monitoring the environment include filtration, sedimentation, electrostatic sampling, impinger, absorption, condensation, spot sampling and pool sampling.
Data collected using these methods of environmental monitoring are fed into a DBMS where they are categorized, analyzed and visualized to provide actionable insights that drive informed decision making.
Atmospheric monitoring: Environmental data collected from several different environmental networks and agencies using specialized observational tools such as sensor networks and geographic information system (GIS) models, combined with emission, meteorological and topographical data. It is integrated into an atmospheric dispersion model that jointly detects and predicts. Concentration of air pollutants.
Soil Monitoring: Using collected samples (individual samples) and composite samples (multiple samples) to monitor soils and determine baseline and Detect and detect threats such as loss, salinity and slope. unstable.
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in 2000, approximately 80 deaths occurred in sri lanka due to malaria. based on what you have learned about how malaria affects human populations, how many of the deaths were those of children?
Due to the red blood cell loss caused by malaria, anemia and jaundice (yellow skin and eyes) may develop. If left untreated, the infection could develop seriously and result in kidney failure, convulsions, mental confusion, coma, and even death.
Although people of all ages can have malaria, young children and pregnant women are more likely to get the severe form of the disease. Infants, children under five, pregnant women, people with HIV/AIDS, and anyone traveling to regions where malaria transmission is very active are some population groups who are at significantly increased risk of catching the disease and suffering severe illness.
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The similarities in function of hummingbird wings and the wings of a butterfly reflect?
The illness was contracted, The ultimate source of all new alleles is revealed by the functional similarities between the wings of a hummingbird and a butterfly.
Discribe Hummingbird and butterfly wings?
Hummingbird and butterfly wings both have a similar structure and ability to fly. They are comparable structures as a result. Both the hummingbird (an avian) and the butterfly (an insect) have wings that enable them to fly while looking for food, refuge, or a mate. similarities between the hummingbird and butterfly wings' functions. not homology, but analogy The similarities between the hummingbird and butterfly wings' functions serve as an analogy and homology. In spite of having differing purposes, the forelimbs of birds, bats, and pterosaurs are homologous, sharing an ancestral condition.
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When venous return is increased, stretch receptors in the atria of the heart are activated. This results in
increased glomerular filtration.
decreased urine production.
increased thirst.
increased ADH secretion.
decreased ADH secretion.
This results in inhibition of ADH secretion.
Human vasopressin, also known as antidiuretic hormone, arginine vasopressin, or argipressin, is a hormone that is synthesized from the AVP gene as a peptide prohormone in hypothalamic neurons and then converted to AVP. A hormone that constricts blood vessels and aids the kidneys in controlling the amount of water and salt in the body. This regulates blood pressure and the amount of urine produced.
By acting on the kidneys and blood vessels, anti-diuretic hormone helps to control blood pressure. Its primary function is to conserve your body's fluid volume by reducing the amount of water passed out in the urine.
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Is fire burning potential or kinetic energy?
Fire burning involves the release of kinetic energy which is stored in the form of potential energy.
Potential energy is any sort of stored energy, whereas kinetic energy may be found in movement. Kinetic energy may be seen on numerous sizes, from atoms vibrating to generate heat to long wavelength radio waves.
When considering energy, it is critical to consider the law of conservation of energy. According to this physics law, energy cannot be generated or destroyed, but can only change form.
When wood is burned, stored potential energy (in the form of chemical energy) in the log is released as a result of heating by other excited atoms. This chemical process is known as combustion, and it necessitates the presence of oxygen. The potential chemical energy of combustion is converted into kinetic energy in the form of heat.
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are these things below living or non-living?
Answer:
fallen bark non
mushroom living
Obsidian non
corals living
kangaroo living
lotus living
fossil fuels non
in liver cells, epinephrine stimulates the breakdown of glycogen. as the signal-transduction pathway progresses, __________.
In liver cells, every epinephrine stimulates the breakdown of our glycogen. As all the signal-transduction are progresses in their pathway, then the signal is amplified.
Following a meal, liver glycogen levels rise and then gradually decline to keep blood glucose levels nearly constant. A signal is considered to be autocrine when it binds to receptors on the cell's surface. When two cells come into contact with one another, juxtacrine signaling occurs. A ligand on one cell surface interacts to a receptor on the other. Blood glucose levels increase after eating because glucose enters the liver.
The liver uses glycogenesis to deal with this extra glucose by converting it to glycogen for storage. Glycolysis is the process by which the glucose that is not stored is converted into energy. Glucagon and epinephrine, two hormones that are largely found in the liver and that induce glycogenolysis (adrenaline). One of the key characteristics of many intracellular signaling pathways is the amplification of signals, which is the process by which a signal's intensity is increased.
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if you made a change in the dna of a promoter sequence that inactivates the promoter, what would happen at the rna level?
The RNA polymerase will not be able to recognize and bind the DNA, so no RNA would be made.
Deoxyribonucleic acid is a polymer of polynucleotide chains that coil spherically each one-of-a-kind to form a double helix. The polymer includes genetic instructions for the development, functioning, boom, and replica of all seemed organisms and lots of viruses.
In all dwelling things, DNA is vital for an inheritance, coding for proteins, and offering instructions for life and its tactics. Human cells commonly consist of 23 pairs of chromosomes, for a complete forty-six chromosomes in every cell.
Most DNA is positioned within the cell nucleus. Mitochondria are structures within cells that convert the power from meals right into a shape that can be used by cells.
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which internal structures of animals are specifically adapted to use contraction to cause movement?
Animal muscles' internal structures have been specifically adapted to use contraction to cause movement.
Muscle cells are designed to contract. Muscles enable motions such as walking, as well as bodily processes such as respiration and digestion. Muscle tissue is classified into three types in the body: skeletal muscle, cardiac muscle, and smooth muscle. Skeletal muscle tissue develops into skeletal muscles, which attach to bones or skin and control locomotion and any consciously controlled movement.
Skeletal muscle is also known as voluntary muscle because it can be controlled by thought. Skeletal muscles are long and cylindrical in shape; when examined under a microscope, skeletal muscle tissue appears striped or striated. To stay alive, grow, and reproduce, an animal must find food, water, and oxygen, as well as eliminate metabolic waste.
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