The science of transplantation has advanced. Researchers and scientists are developing human organs, "printing" tumours to test the efficiency of chemotherapies
what is organ transplant mean ?
Organ and tissue transplant types
The heart, kidneys, liver, lungs, intestine, and pancreas are among the organs that can be transplanted in Australia. Heart valves, bone, tendons, ligaments, skin, and components of the eye can all be transplanted.
If you have an organ that is no longer functioning properly, you may require an organ transplant (end-stage organ failure). After all other therapies have been exhausted, an organ transplant is frequently explored. If doctors believe the transplant would save your life, it may be an option.
A transplant can also be used to improve someone's quality of life, such as a kidney transplant for someone who has renal failure.
The science of transplantation has advanced. Researchers and scientists are developing human organs, "printing" tumours to test the efficiency of chemotherapies, and inventing thought-controlled prosthetic limbs using improvements in technology such as 3D printing and biological/mechanical communication.
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The terrestrial invertebrates, such as the insects of the Carboniferous grew very large. They evolved many innovations such as specialized mouthparts, and the new ability to _______.
They evolved many innovations such as specialized mouthparts, and the new ability to fly.
What is the Carboniferous period?The Carboniferous period is the period that existed between 350 - 300 million years ago.
Some terrestrial invertebrates which are air-breathing insects, myriapods and arachnids are known to have existed in that era.
With time these insects tend to develop new features through mutations and natural selection leading to;
Development of specialised mouthparts that helps in feeding andThe ability to fly.Natural selection is defined as the process that is used by organisms to adapt properly especially to a new environment which helps them to reproduce and survive.
Mutation is defined as the change in the genetic sequence of a chromosome.
Therefore, the terrestrial invertebrates, such as the insects of the Carboniferous evolved many innovations such as specialized mouthparts, and the new ability to fly.
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If a researcher has a DNA sample with a concentration of 0.2 micrograms per microliter, how many microliters of DNA must be transfered to conduct a 50 microliter reaction if the final concentration should be 2.3 nanograms per microliter
The amount, in microliters, of the DNA that must be transferred to conduct the reaction will be 0.575 microliters
Dilution principleThe problem can be solved by using the dilution equation.
Mathematically, the equation is given as:
m1v1 = m2v2
Where m1 = imitial concentration, m2 = final concentration, v1 = initial volume, and v2 = final volume.
However, the initial and final concentrations, in this case, should first be converted to the same units.
0.2 microgram = 0.2 x [tex]10^{-6}[/tex] grams
2.3 nanograms = 2.3 x [tex]10^{-9}[/tex] grams
Thus, 2.3 nanograms = 2.3 x [tex]10^{-3}[/tex] microgram = 0.0023 microgram
What we are looking for is the initial volume.
v1 = m2v2/m1 = 0.0023 x 50/0.2 = 0.575 microliters
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What part of the cell modifies,
sorts, and repackages proteins?
A. Golgi body
B. mitochondria
C. ER
Answer:
A: Golgi body
Explanation:
The purpose for the delay in the conduction of the action potential from the AV node to the bundle branches of the ventricles is to allow ______, before the ventricles contract.
The purpose of the delay in the conduction of the action potential is to allow the atria to complete their contraction, before the ventricles contract.
What are the atria?The atria are two different heart sections/chambers located at the upper region of the heart.
The atria play a fundamental role during the during heart cycle, i.e. they act as blood reservoirs in the systole.
In conclusion, the purpose of the delay in the conduction of the action potential is to allow the atria to complete their contraction.
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How would replacing the aluminum core of an electromagnet with an iron
core affect the electromagnet?
OA. It would become stronger.
OB. It would become weaker.
C. Its strength would vary randomly.
D. Its strength would stay the same.
Replacing the aluminum core of an electromagnet with an iron core would make it to become a stronger electromagnet.
What is an electromagnet?An electromagnet refers to a magnet that is produced by electromagnetic induction. The core of an electromagnetic determines the overall strength of the electromagnet.
Since aluminum is a weaker magnet than iron, replacing the aluminum core of an electromagnet with an iron core would make it to become a stronger electromagnet.
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A group of proteins in the thylakoid membrane that shuttles electrons between the proteins and other carriers is called a(n)____chain.
A group of proteins in the thylakoid membrane that shuttles electrons between the proteins and other carriers is called an Electron transport chain.
In photosynthetic eukaryotes, the electron transport chain is observed on the thylakoid membrane. here, light energy drives electron transport through a proton pump and the ensuing proton gradient causes the next synthesis of ATP.
The light reactions are finished by means of the thylakoid membrane protein complexes photosystem II (PSII), cytochrome b6/f complicated, photosystem I (PSI), and ATP synthase. Many proteins that play crucial capabilities in both reactions have poor roles in viral pathogenesis.
The most outstanding thylakoid transporter is the proton-translocating ATP-synthase. Currently, 4 additional transporters were recognized inside the thylakoid membrane of Arabidopsis thaliana, namely one copper-transporting P-ATPase, one chloride channel, one phosphate transporter, and one ATP/ADP service.
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What is magmatic differentiation? how might this process lead to the formation of several different igneous rocks from a single magma?
Magnetic differentiation is the process by which a single homogeneous magma is able to produce two or more than two of different composition,which ultimately forms diverse rock types.
That process would have to be one that causes magma composition to change.magnetic diffraction can occur by the chemical reaction between the magma and the first crystals to solidify from it.
Igneous rock form when magma cools and crystalline on the surface of the earth or inside the earth crust. Inside the crust all the magma is develops underground in the lower crust or upper mantle. Magma undergo bulk chemical change during the partial melting process, cooling emplacement , or eruption.
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The triceps brachii muscle attaches to the olecranon process of the ulna crossing the posterior side of the elbow joint. that will allow the triceps to be a(n) __________ of the elbow joint.
The triceps brachii muscle attaches to the olecranon process of the ulna crossing the posterior side of the elbow joint. that will allow the triceps to be an Extensor of the elbow joint.
Directly affected is the common extensor tendon, which arises from the lateral epicondyle of the elbow. The common extensor tendon is made up of the extensor carpi radialis brevis (ECRB) and longus, extensor digitorum, extensor digiti minimi, and extensor carpi ulnaris.The main elbow flexors are the biceps brachii, brachialis, and brachioradialis. The main elbow extensor is the triceps brachii. Although it is also believed that the anconeus contributes to elbow extension.The proximal articular region of the ulna is called the olecranon. It creates the larger sigmoid notch, which articulates with the humerus to allow for elbow flexion and extension, together with the coronoid process.The main point of attachment for the forearm's extensor muscles is the common extensor tendon. This promotes forearm supination and allows finger extension.learn more about Olecranon process: https://brainly.com/question/5986282
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The cell body of a neuron contains the?
Answer:
the nucleus..
The cell body is the spherical part of the neuron that contains the nucleus and connects to the dendrites, which bring information into the neuron, and the axon, which sends information to other neurons.
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Blood is supplied to the muscular wall of the left atrium by the
Blood is supplied to the muscular wall of the left atrium by the left coronary artery
Blood is considered a connective tissue that remains flowing continuously in the body and carries oxygen, nutrients, and hormones from one place to another place in the body.
It is pumped into the body equally through the heart which consists of four chambers and several valves and arteries which work in a coordinated manner to collect deoxygenated blood collected from the body and replace oxygen in it and pump it into the other parts of the body.
The left coronary artery (LCA), also known as the left main coronary artery (LMCA) arises from the aorta above the left cusp of the aortic valve and transports the blood to the left side of the heart muscle.
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What is moving a limb away from the median plane of the body along the frontal plane called?
The moving of a limb away from the median plane of the body along the frontal plane called Abduction.
For example- swinging ones hands from each side of the body up to the shoulder or higher is abduction. In an anatomical sense is classified as the motion of a limb or appendage away from the midline of the body.
There is also an arm abduction it is the movement of the arms away from body within the plane of the torso (sagittal plane).
It is so because an abduction spreads the digits away from the hand or foot centerline of both.
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witch best illustrates a result of natural selection?
A result of natural selection is D) giraffes having increasingly more extended necks over time. Natural selection is an evolutionary mechanism that was offered by Darwin.
According to this mechanism, organisms that are better skilled of adapting to their changing environmental conditions, survive and grow their number through reproduction whereas other are stopped from the population.
Who discovered natural selection?
The theory of natural selection was studied by 19th-century naturalist Charles Darwin. Natural selection describes how genetic traits of a species may change over time.
What is natural selection and example?Natural selection is the process in nature by which organisms better adapted to their environment manage to persist and reproduce more than those less adapted to their environment. For example, treefrogs are sometimes consumed by snakes and birds.
correct question shown below,
Which best illustrates a result of natural selection?
A) a bat that is born with a wing that is missing the web
B) dark-colored hares living in a snowy area
C) mosquitoes that transmit disease to humans
D) giraffes having increasingly longer necks over time
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If the receptor on the postsynaptic membrane binds to norepinephrine, the synapse is called:__________
According to the research, if the receptor on the postsynaptic membrane binds to norepinephrine, the synapse is called adrenergic.
What is the adrenergic synapse?It is the molecular complex that selectively receives the signal of adrenaline and noradrenaline in the body's cells.
It is involved in various functions of the sympathetic nervous system, which involves fight and flight responses.
Therefore, we can conclude that according to the research, if the receptor on the postsynaptic membrane binds to norepinephrine, the synapse is called adrenergic.
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The two most common igneous rocks are basalt and granite. Basalt is commonly found ________ and granite is found _______
The two most common igneous rocks are basalt and granite. Basalt is commonly found ocean land and granite is found continental land .
The thickness of oceanic land is 5 Km and continental land is 30 km. The continental land is made up of granite and ocean land is made of lava rock called basalt. The crust is thinnest layer of the earth. What is the oceanic crust?The outermost layer of the oceanic portion of the divergent plate boundaries.It is made of different types of basalt.It is thin and dense.What is continental crust?The thick part of the earth crust which acquires large masses on the land.It is also the layer of igneous, sedimentary and metamorphic rocks.Its thickness is about 25 to 70 kmlearn about earth
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Which of the below features was not used to identify the early Homo distinction from Australopithecines
The correct answer is reduction in tooth size.
The anatomy of the foot and pelvis are the feature of Australopithecus afarensis that is used to definitively classify this species as a hominin.
AustralopithecinesAustralopithecines are an adaptive radiation of early hominins, all of which were to some extent bipedal, had brains that were only slightly larger than those of apes, and had adaptations to a diet that included at least occasionally hard-to-chew items. They have been identified through research on perhaps ten species that lived in central, eastern, and southern Africa between 4.2 million and 1.0 million years ago. Understanding australopithecines is essential to comprehending not only the diversity of early hominins but also the origins of Homo. Our genus Homo probably originated from this radiation, albeit we are unsure from which species.
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Soha, kesha, and lance work together in the same office and also live in the same apartment building. they travel to their workplace using different modes of transport. arrange their transport choices according to their carbon footprint. begin with the person with the smallest footprint.
Arrangement of transport choices if begin with the person with the smallest carbon footprint is Lance < Kesha < Soha .
The entire amount of greenhouse gases (such as carbon dioxide and methane) produced by human actions is known as a carbon footprint.
Let's first take the example of Lance who rides a bicycle to their workplace.
The amount of carbon emission in riding a bicycle is comparatively very low in comparison to the hybrid electric car and gasoline-powered sedan as the bicycle doesn't emit any fumes.
Cycling emits 84 percent less CO2 on average than driving a car or using public transportation.
So, Lance is the person with the smallest carbon footprint.
Now if we compare Kesha with hybrid electric car and Soha with gasoline-powered Sedan, Kesha will have smaller carbon footprint.
In general, compared to conventional vehicles like gasoline-powered sedan, all-electric, plug-in hybrid electric, and hybrid electric vehicles (HEVs) have reduced exhaust emissions like carbon-di-oxide.
So, the correct arrangement of transport choices if begin with the person with the smallest carbon footprint is Lance < Kesha < Soha.
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Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. a parakeet that is heterozygous for blue feathers (dominant) is crossed with a parakeet that is homozygous for white feathers (recessive). a parakeet with white feathers. a parakeet with blue feathers. according to the punnett square for this cross, what percentage of offspring is predicted to have blue feathers?
50% of offspring have blue feathers.
How to make Punnett squares?Let's say the allele for blue feathers, which is dominant, is represented by "B" and that for white feathers, which is recessive, is represented by "b".
One parakeet has heterozygous alleles for blue feathers. Therefore its pair of genes will be represented as - Bb
Another parakeet is homozygous recessive for white feathers. Therefore its pair of genes will be represented as - bb
Gametes formed from Bb will be B and b
Gametes formed from bb will be b and b
Now the cross is made which is here shown by the Punnett square:
B b
b Bb bb
b Bb bb
Bb = blue feathers
bb = white feathers
The phenotypic ratio is = 1 : 1 (blue feathers : white feathers)
The genotypic ratio is = 1 : 1 (Bb : bb)
Therefore, 50% of the offspring have blue feathers and 50% have white feathers.
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Children's steady growth, brain maturation, and intellectual advances make middle childhood a time for more _____.
Children's steady growth, brain maturation and intellectual advances help in making the middle childhood a time for more independence.
The middle childhood ranges from six to twelve years of age and is a very important phase for the growth and development of a child. It is in this stage of life that a child gains social, cognitive, emotional and physical advancements.
The middle childhood basically lays the foundation for adulthood. The brain maturation in this phase involves the growth of certain structures like the frontal lobe which enhances learning and decision making. Steady growth and all the intellectual advancements aid in generating a sense of autonomy and independence in children. This helps in refining the child's capabilities.
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The discarded theory of blending inheritance most closely resembles what inheritance
The discarded theory of blending inheritance most closely resembles incomplete dominance.
What is blending inheritance?An antiquated biological notion from the 19th century is the concept of blending inheritance. According to the hypothesis, children inherit any trait by averaging the values of their parents for that trait.According to the theory of blended inheritance, an offspring combines the values of both parents for a given attribute. As opposed to blended inheritance, particulate inheritance states that a child inherits individual units or genes from each parent. Offspring thus combines the traits of both parents.Incomplete dominance is the term used to describe phenotypic "blending" of two features, which implies that neither trait is truly dominant over the other.The manifestation of phenotypic traits that are intermediate between those of the parents, such as pink flower color from red and white parents. Inheritance was a now-discredited hypothesis that claimed children's genetic make-up was a pure admixture of their parents'.Learn more about inheritance here:
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A bypass or shunt operation that diverts the cerebrospinal fluid is treatment for:.
Hydrocephalus
What is hydrocephalus?An excessive buildup of cerebrospinal fluid (CSF), the clear fluid that surrounds the brain and spinal cord, is the main symptom of the illness known as hydrocephalus. The ventricles in the brain, which are empty areas, enlarge abnormally as a result of this excessive accumulation. Pressure on the brain's tissues as a result of this dilatation could be detrimental. Both congenital and acquired hydrocephalus are possible.
How is hydrocephalus treated?The surgical installation of a shunt device is the most common treatment for hydrocephalus. With the help of this system, CSF (cerebrospinal fluid) is switched from one location in the central nervous system to another one where it can be absorbed as part of the circulatory system. A different method known as third ventriculostomy can be used to treat a small number of patients. The third ventricle's floor is punctured during this surgery to allow the CSF to pass through the blockage and move toward the area of resorption near the brain's surface.
I understand the question you are looking for is this:
A bypass or shunt operation that diverts the cerebrospinal fluid is treatment for
a. meningitis.
b. hydrocephalus.
c. encephalitis.
d. cerebral palsy.
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If the heterozygous phenotype is intermediate between that of the homozygotes this is called:____.
A. epistasis.
B. incomplete dominance.
C. independent assortment.
D. polygenic.
E. codominance.
If the heterozygous phenotype is intermediate between that of the homozygotes this is called independent dominance. The correct answer is B. incomplete dominance.
Incomplete dominance refers to the phenomenon in which two true-breeding parents interbred to create an intermediate child (sometimes referred to as heterozygous). Alternate names for it include partial dominance and intermediate inheritance. In the case of partial dominance, the variations (alleles) are expressed in a reduced ratio rather than as dominant or recessive.
A new heterozygous phenotype is produced by imperfect dominance, often known as the dilution of the dominant allele relative to the recessive allele. For instance
the shape of hairthe size of handsthe pitch of human voicepink colour of flowers(snapdragons and four o’clock flowers)To know more about independent dominance click here
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The presence of five digits is a plesiomorphic characteristic and is, therefore?
The presence of five digits is a plesiomorphic characteristic and is, therefore option A. a primitive mammalian pattern retained to some degree in most primates.
What is true about the presence of five digits on hands and feet?The occurrence of the five digits on both the hands and feet i known to be a kind of a primitive mammalian trait, and it is one that can also be seen in majority of primates.
Note that a lot of animals around in the world today are known to only have five digits (in the fingers or toes). The act of having five fingers in in a lot of cases is seen mostly as a recessive trait.
Therefore, The presence of five digits is a plesiomorphic characteristic and is, therefore option A. a primitive mammalian pattern retained to some degree in most primates is correct.
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The presence of five digits is a plesiomorphic characteristic and is, therefore:
Group of answer choices
A. a primitive mammalian pattern retained to some degree in most primates
B .the only truly distinctive primate trait
C. characteristic only of apes and humans
D. characteristic only of primates
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What kind of traits found in a group of organisms provides the strongest evidence for common ancestry of that group?
What kind of traits found in a group of organisms provides the strongest evidence for common ancestry of that group? Although the characteristics are similar, they serve various purposes in the group members.
What is common ancestry?The idea that all cellular life forms on earth share a single genesis is widely held. The universality of the genetic code and the universal conservation of several genes, especially those that code for essential elements of the translation system, support this viewpoint. By contrasting the capacity of a common-ancestry model with a multiple-ancestry model to predict the sequences of universally conserved proteins, an impressive recent work asserts to provide a formal, homology independent evaluation of the Universal Common Ancestry hypothesis.
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Select the correct answer from each drop-down menu.
The United Nations promotes
x in an effort to maintain world peace and protect future generations. The tOxic
impact of nuclear weapons lasts long after its use. Nuclear bombs release
v that poisons the environment and
endangers lives. Modern nuclear weapons are so powerful that they have the capacity to wipe out large cities in minutes and perhaps
cause the end of human civilization.
Answer:
The United Nations promotes "nuclear arms control" in an effort to maintain world peace and protect future generations. The toxic impact of nuclear weapons lasts long after its use. Nuclear bombs release "radioactive material" that poisons the environment and endangers lives. Modern nuclear weapons are so powerful that they have the capacity to wipe out large cities in minutes and perhaps cause the end of human civilization.
Explanation: edmentum
Answer:The United Nations promotes "nuclear arms control" in an effort to maintain world peace and protect future generations. The toxic impact of nuclear weapons lasts long after its use. Nuclear bombs release "radioactive material" that poisons the environment and endangers lives. Modern nuclear weapons are so powerful that they have the capacity to wipe out large cities in minutes and perhaps cause the end of human civilization.
Explanation:
Identify the cells and structures associated with the seminiferous tubule in this micrograph by clicking and dragging the labels to the correct location.
Seminiferous tubules are the specific site of sperm production, also known as spermatogenesis, and provides the necessary microenvironment to support this process. The micrograph parts shown in the First diagram are:
Seminiferous tubulesBasement MembraneSpermatogenic cellsSpermatogoniaSperm CellsInterstitial CellsThe second diagram shows:
Theca FolliculiiNucleusNucleolusZona PellucidaPrimary oocyteStratum GranulumPrimary FollicleGranulosa CellThe seminiferous tubule is lined by a complex stratified epithelium containing two distinct populations of cells, the spermatogenic cell that develops into spermatozoon, and the Sertoli cell that plays a supportive role.
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Epigenome-wide association study of DNA methylation in narcolepsy: an integrated genetic and epigenetic approach
Epigenetics is the branch of genetics that deals with the altered genetic expression of the genes without any change in the DNA sequence.
Our body’s normal sleep-wake cycle is regulated by our brain but due to a chronic nervous disorder in the brain, this regulation is disrupted causing the disease Narcolepsy. Research is underway to evaluate the exact reason behind the onset of this disease but as per the researchers, this disease is governed by two branches viz, genetics and epigenetics.
DNA methylation and DNA acetylation are two important concepts under epigenetics which can lead to either switching off or on certain particular genes.
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Schleiden concluded all plants are made of cells and Schwann concluded the same thing about animals. Together, how did they contribute to cell theory?
They proved that cells are neither created nor destroyed.
They published several ideas on cell generation.
O They created the theories on the division of cells.
O They claimed that cells were the basic unit of all living organisms.
They created the theories on the division of cells.
What about cells in plant and animal?The smallest unit of life, cells serve as the foundation for all living things. Each part of a cell has a specific purpose. Both differences and similarities exist between plant and animal cells. The mitochondria, cell membrane, cytoplasm, and nucleus are all present in both plant and animal cells.The fundamental unit of life in species belonging to the kingdom Plantae is the cell. They are eukaryotic cells, which have specialized components called organelles and a real nucleus that performs several duties.Animal cells are typical eukaryotic cells since they have a membrane-bound nucleus and organelles and are encased in a plasma membrane.
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Answer:
D
Explanation:
I got it right on my quiz also if you look at what Schleiden and Schwann wrote they even said that “All living things are made up of one or more cells.” Which basically explains option D.
What is an Electrocardiogram used for?
A. To create mechanical replacement hearts.
B. To diagnose problems with the body’s electrical current capacity.
C. To write computer programs that mimic the activity of the heart.
D. To diagnose problems with the heart.
Answer:
To diagnose problems with the heart
Answer: The answer is to diagnose problems with the heart.
Explanation: An electrocardiogram is a display of a person's heart electrical activity. It is used to detect heart problems.
At the end of the pre-cook and finish cook times, bone-in wings should be drained for:____________.
At the end of the pre-cook and finish cook times, bone-in wings should be drained for:____________.
15 seconds.
This time period is allowed so that the liquid in the bones in the chicken would be removed so the bone-in wings would be more tender.
What is Chicken?This refers to the type of meat that is considered a healthy source of protein and is referred to as "white meat" and is made from the body of a fowl or hen.
Hence, we can see that the time period that is allowed at the end of the pre-cook and finish cook times for the bone-in wings is 15 seconds.
This is done in order to let the chicken wings to become more tender as the liquid is drained away from it.
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What cytoskeletal elements support the flagellum, and what is its function?
Cytoskeletal filaments provide the basis for cell movement. For instance, cilia and (eukaryotic) flagella move as a result of microtubules sliding along each other. In fact, cross sections of these tail-like cellular extensions show organized arrays of microtubules.
The cytoskeleton of eukaryotic cells is made of filamentous proteins, and it provides mechanical support to the cell and its cytoplasmic constituents. All cytoskeletons consist of three major classes of elements that differ in size and in protein composition.
Microtubules are the largest type of filament, with a diameter of about 25 nanometers (nm), and they are composed of a protein called tubulin. Actin filaments are the smallest type, with a diameter of only about 6 nm, and they are made of a protein called actin. Intermediate filaments, as their name suggests, are mid-sized, with a diameter of about 10 nm. Unlike actin filaments and microtubules, intermediate filaments are constructed from a number of different subunit proteins.
The cytoskeleton is a structure that helps cells maintain their shape and internal organization, and it also provides mechanical support that enables cells to carry out essential functions like division and movement.
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