Research using transgenic animal models of neurodegenerative diseases not only helps scientists understand the disorders, but also may lead to aging.
Mammal genetic engineering is an expensive, time-consuming, and labor-intensive operation. The gene that genetic engineers want to put into the host organism must first be deleted, similar to other GMOs. This can be created synthetically or taken out of a cell that carries the gene. If the targeted gene or the donor organism's genome has been extensively studied, it may already be available from a genetic library. After then, additional genetic elements are added to the gene, often a selectable marker, a promoter and terminator region, or both.
The complete question is:
Research using transgenic animal models of neurodegenerative diseases not only helps scientists understand the disorders but also may lead to ______?
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what is it called when bulky solids are taken in through endocytosis?
The process of taking in bulky solid particles into a cell through endocytosis is called phagocytosis.
A kind of endocytosis called phagocytosis involves a cell ingesting solid particles. The particle is absorbed into the cell after being engulfed by the cell by extending its plasma membrane around it.
Specialized cells called phagocytes, which comprise white blood cells like neutrophils and macrophages, carry out phagocytosis. By enveloping and eliminating dangerous germs and foreign chemicals that have entered the body, these cells perform a key role in the immune system.
In the process of phagocytosis, the phagocyte's plasma membrane stretches pseudopodia around the target particle, creating a vesicle known as a phagosome. The phagosome then joins with lysosomes, which have enzymes that digest the phagosome's contents.
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Which characteristic was not necessary in order for plants to colonize land?A. Vascular tissue for moving water throughout the plantB. a waxy cuticle to reduce water lossC. the ability to screen ultraviolet lightD. the development of thick spore walls to protect the spore from dehydrationE. development of embryos protected
A. Vascular tissues for moving water throughout the plant. The vascular tissues of these plants allow them to have true roots, stems, and leaves.
The few large plants that were present before the development of vascular tissues did so in watery environments, where support and water conduction were not necessary. Another notable difference between bryophytes and vascular plants is the sporophytic phase of the life cycle, which is the larger, more pronounced reproduction among vascular plants.
Tracheophytes, or vascular plants, are different from nonvascular bryophytes in that they contain specialised xylem and phloem tissues for holding and carrying food and water, respectively. A central column (stele) that runs through the center of the plant is made up of vascular tissue, including xylem and phloem.
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What are extensions of the plasma membrane called?
Many cells have extensions of their plasma membrane called flagella and cilia.
Are pili simply the cell membrane's extensions?The oligomeric protein known as pilin makes up the extensions of the cytoplasmic membrane known as fimbriae and pili. They are flagella-like extensions found on the bacterial cell wall that resemble hairs. They play a role in bacterial movement, surface adhesion, and conjugation.
Is the plasma membrane extended by the mesosome?A mesosome is a specific membranous structure that is created when the plasma membrane is extended inside the cell. Vesicles, tubules, and lamellae are examples of these extensions. They support cell wall construction, DNA delivery to daughter cells, and cell division.
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which of these functional groups is found in all amino acids?
The functional group that is found in all amino acids is -NH2, which is the amino group.
Amino acids are the building blocks of proteins and contain both an amino group (-NH2) and a carboxyl group (-COOH) attached to a central carbon atom. The carboxyl group is responsible for the acidic properties of amino acids, while the amino group is responsible for the basic properties.
In addition to the amino and carboxyl groups, amino acids also contain a side chain or R-group, which can vary in size, shape, and chemical properties. There are 20 different amino acids commonly found in proteins, each with a different side chain that confers unique chemical properties.
None of the other functional groups listed -OH, =O, -PO42- are found in all amino acids. -OH is the hydroxyl group, which is found in some amino acids such as serine and threonine, but not all amino acids. =O is the carbonyl group, which is not found in any of the standard amino acids. -PO42- is the phosphate group, which is not present in amino acids but is found in some phosphorylated amino acids in certain proteins.
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The full question was here:
Which of these functional groups is found in all amino acids? -NH2 -OH =O -PO42-
Simple goiter is most prevalent where the soil lacksA. iodine
B. exocrine
C. goiter
D. pancreas
Simple goiter is most prevalent where the soil lacks iodine. A simple goitre is a thyroid gland hypertrophy. It is not generally a tumour or cancer.
A simple goiter is an enlarged thyroid gland. It is usually not a tumor or cancer. Simple (diffuse) goiter: This type of goiter occurs when the entire thyroid gland becomes swollen and smooth.
Nodular goiter: This type of goiter occurs when solid or fluid-filled masses called nodules develop in the thyroid gland and form lumps. Only if a goitre is producing symptoms should it be treated. Treatment of an enlarged thyroid may include:
Thyroid hormone replacement, if hypothyroidism is the cause of the goiter. If the goiter is due to iodine deficiency, a small amount of Lugol's iodine or potassium iodine solution.
The most prevalent cause of goitre is a lack of iodine. Iodine is required by the body to produce thyroid hormones. When you don't get enough iodine in your diet, your thyroid gland expands and tries to take in as much iodine as possible so it can produce the right amount of thyroid hormone.
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5. The map below shows the typical breeding ranges for six different populations of juncos. The UCSD juncos population is not shown on this map. If you wanted to look for evidence of whether juncos from one of these six populations ever interbred with juncos from one of the other of the six populations, in what parts of the map do you think you would be more likely to observe such behavior? Mark those locations on the map with small stars.
HEEELPPP ASAAPPP
Juncos interbred in the forest of northern rocky mountains and from southern Alberta to eastern Idaho.
What are Juncos?A species of junco, or small, greyish New World sparrows, includes the dark-eyed junco.
A large portion of temperate North America is home to this bird, which is also widespread in the Arctic throughout the summer. Similar to the closely related fox sparrow, it is a very variable species, and its systematics are still not fully understood.
Juncos interbred in the forest of northern rocky mountains and from southern Alberta to eastern Idaho.
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as dehydration progresses and blood volume decreases, blood pressure will and heart rate will . a. increase; increase b. remain the same; decrease c. decrease; decrease d. decrease; increase
The volume of blood in your body, or the amount of blood flowing through it, reduces when you are dehydrated. In order to make up for this, your heart beats more quickly, raising both your blood pressure and heart rate.
Age, genetics (family history and race), atherosclerosis, obesity, salt intake, and alcohol consumption are risk factors. A poor intake of potassium, calcium, and magnesium-rich low-fat milk products, whole grains, nuts, fruits, and vegetables may also raise the risk of developing hypertension. The calcium mineral implanted into the organic matrix of bone contributes to the stiffness and strength of bone and is a storage of calcium that can be withdrawn to keep the circulation calcium levels within the typical range of about 2.5 mM. (10 mg per dl).Blood pressure may drop when dehydration worsens due to a reduction in blood's water content. Increased levels of dehydration affect cardiovascular function along with an increase in heart rate and challenges managing the amount of blood the heart pumps to the tissues.
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Thunderstorms develop as a result of which process in ocean areas?
rising warm air creating low pressure cells
rising warm air creating high pressure cells
falling air temperatures creating low pressure cells
falling air temperatures creating high pressure cells
Thunderstorms typically develop as a result of rising warm air creating low pressure cells
define Thunderstorms ?
Thunderstorms are a type of weather phenomenon characterized by the presence of lightning and thunder. They are typically caused by the rapid upward movement of warm, moist air, which can lead to the formation of cumulonimbus clouds. Thunderstorms can produce heavy rain, hail, strong winds, and tornadoes.
Thunderstorms typically develop as a result of rising warm air creating low pressure cells, rather than any process in ocean areas specifically. The warm air rises and cools as it reaches higher altitudes, and the resulting condensation of water vapor in the atmosphere can form thunderclouds. The updrafts and downdrafts within the thunderclouds can lead to the formation of lightning and thunder, which are characteristic of thunderstorms. While thunderstorms can occur over land or water, they are typically associated with warm, moist air masses that rise and cool in the atmosphere, creating the necessary conditions for thunderstorm development.
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The biological species concept is inadequate for grouping. A) plants. B) parasites. C) asexual organisms. D) animals that migrate. E) sympatric populations.
The biological species concept is inadequate for Asexual organisms. Hence, Option C is correct answer.
Asexual reproduction is a type of reproduction where the progeny of a single organism only have the genes of the parent from whence they derived. It excludes the joining of gametes. Binary fission, budding, vegetal reproductive, spore formation (sporogenesis), fragmentation, parthenogenesis, and apomixis are the several asexual reproduction methods.
Asexual reproduction is a method used by bacteria, archaea, many plants, fungi, and some mammals. Planarians, several annelid worms, especially polychaetes and some oligochaetes, turbellarians, and sea stars are instances of animals that reproduce asexually.
Many plants and fungi produce offspring. Specific plants, like liverworts, have gemmae, which are specialised structures for fragmentation-based reproduction.
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Plants can reproduce both sexually and asexually. Asexual reproduction does not require the investment required to produce a
flower, attract pollinators, or find a means of seed dispersal. Asexual reproduction produces plants that are genetically identical to
the parent plant because all of the genetic material comes from one parent. Traditionally, these plants survive well under stable
environmental conditions when compared with plants produced from sexual reproduction because they carry genes identical to those
of their parents. What are some examples of asexual reproduction in plants? Select ALL that apply.
A)
Tomatoes produce flowers which grow into fruits.
B)
Irises grow from bulbs.
C)
Potatoes have nodes or eyes from which the new growth begins.
D
Zinnias are grown from seeds.
E)
Strawberries produce runners.
l
Examples of asexual reproduction in plants include B. Irises grow from bulbs, C. Potatoes have nodes or eyes from which the new growth begins And E. Strawberries produce runners.
What is asexual reproduction?Asexual is a type of reproduction in plants that does not involve flowers and seeds in the process. So there are other ways to produce new offspring without the marriage process.
Examples of asexual reproduction in problems include:
1. Plants from tubers
Tubers are an example of a place to store food reserves for plants and can act as a means of reproduction. When the tuber is separated from the plant, the tuber can grow new shoots and form a complete plant. Examples are irises and potatoes which grow from tubers.2. Strawberries produce runners.
Runners are often called stolons. Stolons are stems that grow horizontally and in each segment are able to form a whole new plant. Stolons are found in strawberries and grasses such as sedges.Learn more about examples of asexual reproduction at https://brainly.com/question/16213920
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Answer:
B, C, and E
Explanation:
usa testpreppp
which of the following situations is a potential consequence of a phospho-mimetic mutation (mimic phosphorylation) in lamin a? a: nuclear envelope does not assemble properly b: protein import into the nucleus is blocked c: protein export is blocked d: cell division is blocked e: transcription is blocked
Option E: transcription is blocked.
Lamin A is a protein component of the nuclear lamina, which is involved in maintaining the structural integrity of the nucleus and regulating gene expression. Phosphorylation of lamin A is a key regulatory mechanism that can influence its function in the nucleus. A phospho-mimetic mutation in lamin A can prevent proper transcription of genes by inhibiting the activity of certain transcription factors, which can lead to various cellular dysfunctions. None of the other options listed are direct consequences of a phospho-mimetic mutation in lamin A. Pre-lamin A/C or lamin A/C is a protein that in humans is encoded by the LMNA gene. Lamin A/C belongs to the lamin family of proteins.
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which structures does the neurovascular bundle usually pass under or behind on its way through the thoracic outlet?
Pectoralis minor tendon structures does the neurovascular bundle usually pass under or behind on its way through the thoracic outlet.
The scalene fat pad is a thick layer of fatty tissue beneath the skin in the lower neck that helps to protect the deeper muscular and neurovascular tissues of the thoracic outlet.
When pushing with the fingers on the lower neck, the presence of the scalene fat pad makes it difficult to feel the structures of the thoracic outlet. Region of the omohyoid muscle, a minor muscle that runs across the lower part of the neck, goes through the scalene fat pad.
The anterior scalene muscle is located just behind the scalene fat pad. This muscle develops from the vertebrae of the cervical spine and goes vertically to connect to the top of the anterior first rib.
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1. Choose the best answer. A(n) ____ is a rope pulled around a wheel and axle. Inclined plane
lever
pulley
fulcrum
A "pulley" is a rope that is drawn around a wheel and axle.
pulleyA simple mechanism known as a pulley is made up of a wheel with a groove in the rim and a rope, cable, or chain that passes through the groove. The wheel rotates when the rope is pulled, which can be utilized to lift or move large objects. To make work easier, pulleys are frequently employed in conjunction with other straightforward machinery, such levers or gears.The pulley rotates when a force is given to one end of the rope, which can be used to lift or move a big item with less effort.To make work easier, pulleys are frequently employed in conjunction with other straightforward machinery, such levers or gears. They are frequently used to lift big things or transfer commodities between sites in a range of industries, including construction, transportation, and manufacturing. Utilizing a pulley system has the benefit of lowering the amount of force required to move a large object, making work easier and more productive.learn more about pulley here
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Which question may be asked and researched by a consumer who is arguing against the use of genetically modified crops due to its effect on the economy?
a. Have genetically modified crops allowed farmers to save money on insecticides and pesticides?
b.Will genetically modified crops reduce the amount of land and energy used by farms because they have high yields?
c.Have genetically modified crops shown improvements in nutrition for consumers compared to non-genetically modified crops?
d.Will the prices of crops increase because the seeds for genetically modified crops are more expensive and this may drive small farmers out of
business?
The question that should be asked is "Will the prices of crops increase because the seeds for genetically modified crops are more expensive and this may drive small farmers out of business?". The correct option is D.
What are genetically modified crops?Crops that have had their DNA altered in a lab using genetic engineering techniques are referred to as genetically modified crops (GMCs), sometimes known as genetically engineered crops.
This is done to introduce or improve on particular qualities, including enhanced crop yields, increased nutritional value, or pest resistance.
A contentious topic, the usage of genetically modified crops has both proponents and opponents.
GMC proponents contend that by raising crop yields, decreasing the use for pesticides and herbicides, and enhancing the nutritional value of crops, they can assist address the issue of food security.
However, detractors contend that GMCs might have detrimental effects on the economy, the environment, and human health.
Thus, the correct option is D.
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the lipopolysaccharide molecule is an important component of the cell membranes of which organisms?
The lipopolysaccharide (LPS) molecule is an important component of the cell membranes of gram-negative bacteria.
Gram-negative bacteria are a diverse group of bacteria that are characterized by their cell walls, which consist of a thin layer of peptidoglycan surrounded by a thicker outer membrane. The outer membrane contains a variety of lipids and proteins, including the LPS molecule.
LPS is a large, complex molecule that is composed of three parts: a lipid, a polysaccharide, and a protein. The lipid component, known as lipid A, is responsible for the toxic effects of LPS, while the polysaccharide and protein components are involved in the recognition and specificity of LPS by the host.
The presence of LPS in the cell membrane of gram-negative bacteria makes them highly resistant to certain types of antibiotics and other antimicrobial agents. LPS also plays a role in the pathogenesis of many gram-negative bacterial infections, as it triggers an immune response that contributes to the symptoms of the infection. For these reasons, LPS is an important target for the development of new antibiotics and other treatments for gram-negative bacterial infections.
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Based on the β-globin alignment, identify the best hypothesis about how humans are related to monkeys and gibbons.
Gibbons are more closely related to humans than monkeys are because the gibbon β-globin sequence is a closer match with the human sequence.
94.5% similarity can be found between humans and monkeys based on beta globin sequence, this indicates how close monkeys are to umans in terms of genetics.
What is Beta globin?The beta-globin protein is made using instructions from the HBB gene. Red blood cells include a bigger protein called haemoglobin, of which beta-globin is a part (or subunit). Hemoglobin in adults is made up of four protein subunits: typically two beta-globin subunits and two alpha-globin subunits, which are both produced by the HBA gene. Each of these protein subunits is joined (bound) to a heme, a molecule that contains iron and has the ability to bind one oxygen molecule. Red blood cells' haemoglobin attaches to oxygen molecules in the lungs. These cells subsequently circulate through the bloodstream, supplying tissues all over the body with oxygen.
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the structure of the spleen and lymph nodes are composed mainly of
The structure of the spleen and lymph nodes are composed mainly of Reticular loose connective
The spleen is the body's biggest lymphatic organ. The spleen is made up of two types of tissue: white pulp and red pulp. It is surrounded by a connective tissue capsule that continues inside to split the organ into lobules. The white pulp is lymphatic tissue made up primarily of lymphocytes that surround arteries.
Lymph nodes are made up of lymph tissue and other types of cells, such as white blood cells (lymphocytes). Lymph nodes and other lymphatic organs such as the spleen and thymus contain lymphocytes, which are unique white blood cells. These may rapidly proliferate and produce antibodies in response to bacteria, viruses, and a variety of other stimuli emitted by dead or dying cells, as well as improperly behaving cells such as cancer cells.
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Full Question
The structure of the spleen and lymph nodes are composed mainly of ______-
5.a parasite that draws blood, irritates the skin, and causes restlessness is most likely a/an a.ectoparasite b.endoparasite c.helminth d.vector
Ectoparasite: A parasite that disturbs sleep, irritates the skin, and draws blood.
Humans are susceptible to three main forms of parasites: protozoa, helminths, and ectoparasites. Ectoparasites such as lice, sheep ticks, ticks, fleas, and mange mites have been linked to a variety of health issues, including mechanical tissue damage, irritation, inflammation, hypersensitivity, abscesses, weight loss, lameness, anaemia, and in some extreme cases, the death of infected animals with the resulting... Ectoparasites are organisms that can cause harm to the host because they can survive in the skin or skin-related growths of the host for a variety of periods of time. Examples of typical human ectoparasites include lice, fleas, bedbugs, mites, and ticks. The most prevalent foodborne parasites in the United States are roundworms like Trichinella spp. and Anisakis spp., protozoa like Giardia intestinalis, Cyclospora cayetanensis, and Toxoplasma gondii, and tapeworms like Diphyllobothrium spp. and Taenia spp.
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What are the names of the cells in the eye that are specialized to detect light intensity?
options:
Papillae
Tympanic membranes
Rods
Cones
Rods are the name for the eye's unique light-sensitivity cells.
Rods are one of two types of photoreceptor cells in the retina of the eye, the other being cones. Rods are much more sensitive to light than cones and are responsible for vision in low-light conditions. They contain a pigment called rhodopsin, which undergoes a chemical change in response to light, triggering a signal that is transmitted to the brain through the optic nerve. The human retina contains about 120 million rods, concentrated mainly in the peripheral parts of the retina. In addition to detecting light intensity, rods also play a role in detecting movement and providing spatial information.
Option C is the proper response, thus.
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What are the possible chromosome combinations in the two daughter cells? (Use DG, LG, DP, and LP. )
The combinations will depend on the specific cell division process and the chromosome makeup of the parent cell.
What are chromosomes?Chromosomes are structures within cells that contain genetic information in the form of DNA.
The possible chromosome combinations in the two daughter cells can vary depending on the type of cell division.
In mitosis, each daughter cell receives an identical set of chromosomes, so the chromosome combination is the same in both cells, represented as DG (duplicated genome). In meiosis, daughter cells receive a unique combination of chromosomes due to the process of recombination, resulting in either LG (haploid genome) or DP (duplicated haploid genome) in one daughter cell and LP (haploid genome) or DP (duplicated haploid genome) in the other daughter cell.
Daughter cells are the two identical cells that result from the division of a single cell during cell division.
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a tissue that is dominated by thick collagen fibers that extend mostly parallel, allowing little space for cells and ground substance, is known as
A tissue that is dominated by thick collagen fibers that extend mostly parallel, allowing little space for cells and ground substance, is known as Connective tissue.
The body's cells are supported and integrated by connective tissue, which is made up of organic tissues that are divided into their cells and extracellular components. The latter is known as the ground material and is integrated with the fibers that give connective tissue its elastic properties.
Connective tissue, also referred to as fibrous tissue, is one of the four primary types of animal tissue, along with epithelial tissue, muscle tissue, and nerve tissue. It arises from the mesenchyme, which originates from the mesoderm, an intermediate embryonic germ layer. Connective tissue fills in the spaces between various tissues all over the body, including the nervous system. The three meninges, which are membranes that cover the brain and spinal cord, are made of connective tissue.
Mammal bodies have a form of tissue called connective tissue, which is utilized to unite or connect all the other tissues.
Several varieties of connective tissues are:
Thick, and dense connective tissueUnfastened connective tissue (also called areolar)Learn more about connective tissue here
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what is the name of the structure located inside the cochlea that contains auditory receptors?
Answer: mf uhhh
Explanation:
imagine a population that is polymorphic at the a locus. if the frequency of the a allele is 80% and the frequency of the a allele is 20%, what proportion of the population would you expect be heterozygotes?
You would estimate that 0.0016 of something like the population would be heterozygotes. if the frequency of one allele is 20% and indeed the frequency of another is 80%.
What is an example of an allele?An allele is a component of a group of genes that govern the same feature, such as red cells or color blindness, and are located at a specific place on a specific chromosome. The alleles you received from your parent define your blood group.
Why is there two alleles in humans?Diploid humans exist. As a result, everyone of our genes has just two alleles. This is mostly due to the fact that we only receive one copy of each parent's chromosomes. We all have pairs of chromosomes because we each have two parents.
AA × AA = 0.4096
AA × Aa = 0.4096
AA × aa = 0.0512
Aa × Aa = 0.1024
Aa × aa = 0.0256
aa × aa = 0.0016
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what is the megagametophyte also know as in angiosperm reproduction?
Megagametophytes, or embryo sacs, are produced during angiosperm reproduction.
One of the reproductive stages of plants like mosses and bryophytes is the gametophyte. The female gamete, or megagametophyte, is also referred to as an embryo sac. The megagametophyte emerges from the megaspores of heterosporous plants. In angiosperms, the megagametophyte serves as the embryo sac. An immature ovule is a megasporangium. There are megasporocytes inside the ovule. Megaspores are formed as a result. The megagametocyte, the female gamete, is produced by the megaspore. An ovule becomes fully developed from these megagametocytes. They serve as the equivalent of an embryo sac in several plants. The process through which megagametophytes mature and evolve is known as megagametogenesis. The female gametes, or eggs, are produced by megagametophytes.
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The above question is incomplete. Check complete question below -
what is the megagametophyte also know as in angiosperm reproduction?
A. embryo sac
B. Endosperm
C. Pollen sac
D. microsporophyll
Cartilage has a flexible matrix that can accommodate mitosis of chondrocytes – this makes it an excellent scaffolding tissue upon which to build bone.
True/false
The adaptable matrix of cartilage acts as an excellent scaffold for the formation of bone because chondrocytes can go through mitosis there. The given statement is true.
FlexibilityThe three types of cartilage are hyaline, elastic, and fibroblastic. Elastic cartilage is the type of cartilage that makes up the majority of the human body.The three types of cartilage are chondrocyte cartilage, chondrocyte cartilage, and hyaline cartilage. Due to the tightly packed collagen fibers in the matrix, it is strong but slightly flexible.The matrix of cartilage does not contain calcium like bone does. It actually has high concentrations of chondroitin, a chemical that contributes to suppleness and flexibility.For more information on cartilage kindly visit to
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John is a livestock inspector for the state of Oklahoma and his job is to inspect
animal production operations to ensure all regulations are being followed. On
Monday, John visited a goat operation facility and saw many of the animals were ill.
What freedom does this violate?
A. The freedom to express normal behavior
B. The freedom from confinement
C. The freedom from pain, injury and disease
D. The freedom from hunger and thirst
Answer: c because medicine should be aloud
Explanation: hope thid helps
the fibula group of answer choices articulates with the femur. crosses the tibia when the leg is rotated. forms the lateral border of the knee joint. stabilizes the ankle joint.
The fibula or calf bone is a leg bone on the lateral side of the tibia, to which it is connected above and below.
The fibula or calf bone is a leg bone on the lateral side of the tibia, to which it is connected above and below. It is the smaller of the two bones and, in proportion to its length, the most slender of all the long bones.
The structure of the fibula can be broken down into the head, neck, shaft, and distal end of the fibula. As the head becomes narrow distally, the fibular neck is formed. The fibular shaft lies distal to the neck and has three surfaces, lateral, medial, and posterior. The lower leg is comprised of two bones, the tibia and the smaller fibula. The thigh bone, or femur, is the large upper leg bone that connects the lower leg bones (knee joint) to the pelvic bone (hip joint).
The fibular collateral ligament is a strong ligament that originates from the lateral epicondyle of the femur, just posterior to the proximal attachment of the popliteus, and extends distally to attach on the lateral surface of the fibular head.
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this substance is produced in the liver, but is stored in and secreted by the gallbladder. t/f
It is TRUE that bile is produced in the liver, but is stored in and secreted by the gallbladder.
The liver produces bile, also known as gall, which is a greenish yellow secretion that is then sent to the gallbladder for concentration, storage, or transportation into the duodenum, the first part of the small intestine. Its job is to facilitate the duodenum's ability to digest lipids. Bile is made up of bile acids and salts, phospholipids, cholesterol, pigments, water, and electrolyte molecules that make the overall solution slightly alkaline. Bile is continuously released from the liver cells into the common bile duct and gallbladder, where it is normally concentrated to 5–18 times its original intensity.
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The actual question is:
True, or False,
Bile is produced in the liver, but is stored in and secreted by the gallbladder.
What are the visible characteristics of transitional epithelium? Select all that apply.A. Cilia project from the apical surface into the lumen B. Cell is more rounded at the basal surface and flattened at the apical surface. C. Multiple layers of cells. D. Rounded apical surfaces that resemble a tombstone shape. E. Neighbors a hollow cavity called the lumen.
In a relaxed condition, the urothelium has five to seven cell layers; in a dilated bladder, it has two or three cell layers. The epithelium's functional alteration does not harm it, giving rise to the term "transitional epithelium." Thus, option C, D, E is correct.
What are the features of transitional epithelium?Cellular projections, like intermediate filaments that protrude from the cellular membrane, connect the transitional epithelium's surface layer to the basal layer.
The cells of the transitional epithelium are rounded and oblong in form. However, as the tissue is stretched, these cells become flimsy and flattened. Gap junctions: These structures link the cells of the transitional epithelium together.
Therefore, -Neighbors, a hollow cavity called the lumen. Multiple layers of cells, -Rounded apical surfaces that resemble a tombstone shape.
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5. The diagram below represents an incomplete section of a DNA molecule. The boxes represent unidentified bases.
When the boxes are filled in, the total number of bases represented by the letter A (both inside and outside the boxes) will be
a. 4
b. 2
c. 1
d. 3
Answer:
Explanation:
There will be a total number of 3 bases that are represented by letter A. Adenine pairs with thymine and there are two thymine bases, which are paired to two adenine bases. There is an additional adenine base on the outside and accounts for the three adenine bases inside and outside.
