Complete Question-
What mechanisms have evolved in animals with
(a) external fertilization and
(b) internal fertilization that help ensure that offspring survive to adulthood?
Mechanisms have evolved in animals with is In internal fertilization, the eggs are either grown in a secure reproductive canal or are protected when laid by a shell, a defense mechanism exhibited by animals like mammals, reptiles, and birds.
When gametes combine inside the female body, this process is known as internal fertilization. The female reproductive system receives the male gamete, which then swims to the egg to fertilize it.
Either the mother feeds the eggs or they are placed with a hard covering to protect them from environmental risks. These systems aid species like birds, reptiles, and mammals in boosting the survival of their progeny.
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About 5% of individuals with Down syndrome have a chromosomal translocation in which a third copy of chromosome 21 is attached to chromosome 14. If this translocation occurred in a parent's gonad, how could it lead to Down syndrome in a child?
Answer: nondisjunction
Explanation: its an error in meiosis chromosomes fail to separate
A single b lymphocyte can recognize multiple antigenic determinants. true false
This statement is true. A single B lymphocyte can recognize multiple antigenic determinants.
Receptors on B lymphocytes, known as immunoglobulins or antibodies, are highly selective for the antigenic determinants they are designed to target. Yet one cell has multiple antibodies. This allows detection of many antigenic determinants. By forming antibodies, B cells are essential for pathogen-specific immunity. Immunoglobulin immobilized on the surface of B lymphocytes enables them to recognize soluble antigens and develop into plasma cells that can secrete immunoglobulins and produce antibodies. B cells also release cytokines and present antigens. For this reason they are called professional antigen-presenting cells (APCs). An animal's B cells originate in the bone marrow, which makes up most of the bones. B cells arise in the bursa of Fabricius, a lymphoid organ in birds.Therefore, the statement is true.
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in a resting neuron, the area just inside of the cell membrane is more than the area just outside of the cell membrane.
In a resting neuron, the area just inside of the cell membrane is more negative than the area just outside of the cell membrane.
A neuron is the nerve cell that functions to transmit signals to and from the brain. The structure of a nerve cell consists of a cell body surrounded by finger-like projections called dendrites. From one side of the body emerges the long axon, which ends at the axon terminal. The neuron is the longest cell in the body.
Cell membrane is the outer layer that surrounds the cell in living organisms. It is a semi-permeable membrane that allows the passage of limited substances through it. There is a potential difference between the two sides of the membrane due to difference in distribution of ions. The inner side is therefore more negative than the outer one.
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What role does complementary base pairing play in the functions of nucleic acids?
Photosynthesis converts light energy to chemical energy. which molecules are the end product of this transformation of energy in this reaction? adp and nadph adp and nadp atp and nadph atp and nadp
Photosynthesis converts light energy to chemical energy. ATP and NADPH molecules are the end product of this transformation of energy in this reaction.
Photosynthesis is one of the most important biochemical processes on Earth. It enables plants to convert sunlight into chemical energy, which can be used to power cellular processes. ATP and NADPH molecules are the end products of this transformation of energy.
ATP and NADPH are essential for plant growth and development. They are used in a variety of biochemical processes, including photosynthesis, carbon fixation, and cell division. Without these molecules, plants would not be able to convert sunlight into chemical energy.
While photosynthesis is a complex process, understanding the basics can help us appreciate the importance of this vital process.
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The sex hormones estrogen, progesterone, and testosterone belong to which class of macromolecules?
The sex hormones estrogen, progesterone, and testosterone belong to Lipids class of macromolecules.
As we know, sex hormones are responsible for the development and maintenance of sexual characteristics in both men and women. These hormones are also responsible for the regulation of the reproductive system. The three main sex hormones are estrogen, progesterone, and testosterone.
Estrogen is the primary sex hormone in women and is responsible for the development of female sexual characteristics. Progesterone is another important sex hormone in women and is responsible for the regulation of the menstrual cycle. Testosterone is the primary sex hormone in men and is responsible for the development of male sexual characteristics.
All three of these sex hormones belong to the Lipids class of macromolecules. Lipids are a class of organic compounds that are insoluble in water but soluble in organic solvents. They include fats, oils, waxes, and certain types of steroids.
The sex hormones estrogen, progesterone, and testosterone are all lipids. They are insoluble in water but soluble in organic solvents such as alcohols, ethers, and chloroform.
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Explain why it is too narrow to define the biodiversity crisis as simply a loss of species.
The biodiversity crisis also involves the deterioration of entire ecosystems, loss of genetic variety within populations and species, and extinction of entire species.
Biodiversity refers to the various organisms— bacteria, fungi, animals, and plants—that make up our environment. These diverse species work together in intricate ecosystems that resemble webs to maintain equilibrium and support life.
The accelerating extinction of species and deterioration of ecosystems, together known as the biodiversity crisis, pose a larger threat to the stability and flourishing future of humanity on Earth than climate change.
The five primary causes of the biodiversity crisis - habitat loss, climate change, direct exploitation of species, invasive species and pollution - could all be addressed through the implementation of a national biodiversity policy, which would assure a thorough and coordinated approach.
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The males of some bird species provide no parental care. If this were true for the Eurasian kestrel, how would the experimental results differ from those shown above?
The three bars showing male survival would have comparable heights, but female survival would still decrease as brood size increased.
Eurasian kestrel :The common kestrel is a bird of prey that belongs to the Falconidae falcon family's kestrel group. The European kestrel, Eurasian kestrel, and Old World kestrel are all names for this bird. In the United Kingdom, where no other kestrel species is common, it is frequently referred to as a "kestrel".
Definition of survivalThe act or fact of living or persisting for a longer period of time than another person or thing. the continuation of life or survival challenges in arctic conditions Survival is the act of surviving a life-threatening situation. A person overcoming cancer is an example of survival. The fact that you survived. (as a modifier) Of, pertaining to, or assisting in survival.
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Herniation through the foramen of bochdalek is usually found on which portion of the diaphragm?
About 85 % posterolateral Bochdalek hernias tend to occur on the left side and 15 % on the right side.
one study revealed the mechanism in which ajoene-induced ros (reactive oxygen species), er (endoplasmic reticulum) stress and macrophage autophagy has on reducing mycobacterium tuberculosis in vitro
Ajoene, a garlic-derived sulfur-containing compound, has broad-spectrum antimicrobial pastime. To check the ability of ajoene for treating tuberculosis (TB), we decided whether or not it induces the strain reaction of the endoplasmic reticulum (ER), which performs an essential position in TB.
We confirmed that ajoene stimulation brought on the manufacturing of ER strain sensor molecules and reactive oxygen species (ROS) tiers. Ajoene-brought on ROS manufacturing changed into depending on c-Jun N-terminal kinase (JNK) activation. Interestingly, the inhibition of JNK pastime and suppression of ROS manufacturing decreased ajoene-brought on CHOP manufacturing in macrophages. Because ER strain turns on autophagy, the activation of which suppresses the boom of mycobacteria.
Remarkably, the whole quantity of Mycobacterium tuberculosis (Mtb) H37Rv changed into notably decreased in ajoene-dealt with RAW 264.7 cells. The remedy of macrophages with ajoene resulted withinside the activation of JNK, induction of ROS synthesis and accumulation of ROS, probable main to the activation of ER strain and autophagy. These effects screen the mechanism of the antimycobacterial outcomes of ajoene in opposition to Mtb H37Rv. Our findings may facilitate the improvement of novel remedies for sufferers with TB.
Question is incomplete, the complete question is -
One study revealed the mechanism in which ajoene-induced ros (reactive oxygen species), er (endoplasmic reticulum) stress and macrophage autophagy has on reducing mycobacterium tuberculosis in vitro, how ?
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Connective tissue is characterized by a loose arrangement of protein fibers and cells, whereas ________ connective tissue is characterized by numerous, tightly packed protein fibers and cells.
Areolar Connective tissue is characterized by a loose arrangement of protein fibers and cells, whereas dense connective tissue is characterized by numerous, tightly packed protein fibers and cells.
There are two main types of connective tissue: areolar and dense. Areolar connective tissue is characterized by a loose arrangement of protein fibers and cells, whereas dense connective tissue is characterized by numerous, tightly packed protein fibers and cells.
Areolar connective tissue is found in a variety of locations in the body, including beneath the skin, around blood vessels, and in the digestive tract. This type of tissue is important for cushioning and supporting organs and tissues. In addition, areolar connective tissue helps repair damaged tissues by providing a scaffold for new tissue growth.
Dense connective tissue is found in tendons, ligaments, and bone. This type of tissue is important for providing strength and stability to the body.
Both types of connective tissue are important for the proper functioning of the body.
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Why does oceanic lithosphere subduct under continental lithosphere, whereas continental lithosphere does not subduct under oceanic lthospere?
The oceanic lithosphere subduct under continental lithosphere, whereas continental lithosphere does not subduct under oceanic lithospere because the oceanic lithosphere is denser than the continental lithosphere.
What is Lithosphere?This refers to the rigid and rocky layer of the Earth and consists of the crust and the solid outermost layer of the upper mantle while density is defined as the mass per unit volume of a substance.
The oceanic lithosphere is made up of mafic crust and ultramafic mantle while the continental lithosphere is made up of heavy mantle peridotite and the former gets shoved down underneath the overriding plate which is because it contains denser rocks than the latter.
This is therefore the reason why the oceanic lithosphere subduct under continental lithosphere, whereas continental lithosphere does not subduct under oceanic lithospere.
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What caused the drastic decline of the Illinois greater prairie chicken population?
The drastic decline of the Illinois greater prairie chicken population. The greater prairie chickens experienced a bottleneck event.
Greater prairie chicken meat has awesome earthy tones with recommendations of beef, because of the better tiers of myoglobin. sturdy accompanying flavors may not weigh down or cover the flavor of this chook, which means it is very versatile in phrases of recipes. The U.S. Fish and flora and fauna carrier nowadays proposed listing an awesome population phase of Lesser Prairie-Chickens in jap New Mexico and the southwest Texas panhandle as endangered
Prairie chickens are endangered due to the fact the tallgrass prairie has been plowed for farmland and blanketed by using cities. Habitat has additionally been misplaced due to heavy grazing through cattle, even though some farm animal ranches hold excellent grassland habitats suitable for prairie chickens. officials with the U.S. Fish and natural world service and the character Conservancy in Texas estimate the modern-day populace is at least 178 birds, with 89 men counted at some point in the 2021 spring survey.
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What is the function in a cell of the carbon compounds nucleic acids?
provides a cell membrane that regulates the interaction between the cell and the environment
stores and transmits hereditary information
stores energy for the cell and sometimes provides structural support
regulates cell processes, transports things into and out of the cell, and fights disease
The function of the cell of the carbon compounds nucleic acid is it regulates cell processes, transports things into and out of the cell, and fights disease.
What are the functions of nucleic acids?Nucleic acids are biopolymers, macromolecules, essential to all known forms of life. They are composed of nucleotides, which are the monomers made of three components: a 5-carbon sugar, a phosphate group and a nitrogenous base.
Nucleic acids are large biomolecules that play essential roles in all cells and viruses. A major function of nucleic acids involves the storage and expression of genomic information. Deoxyribonucleic acid, or DNA, encodes the information cells need to make proteins.
Nucleic acids, deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), carry genetic information which is read in cells to make the RNA and proteins by which living things function.
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The _____ is the spot on the back of the retina that contains the highest concentration of cones in the retina. it is the place of clearest vision.
The fovea centralis is the solution.
The fovea centralis is located in the macula lutea, a small, flat area that is positioned precisely in the center of the posterior part of the retina. The fovea, which is 0.35 mm in diameter and responsible for high-acuity vision, is strongly saturated with cone photoreceptors. The macula is roughly 5.5 mm in diameter. The fovea is oval in shape horizontally and contains around 50 cone cells per square centimeter. Given the large cellular concentration there, it makes reasonable that this area of the eye would have the finest visual acuity, or resolution.
The central fovea's unique capacity to concentrically displace neighboring retinal layers enables the dense packing of cones.
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If a child loses vision, their brain will respond by using the area previously devoted to vision for other abilities. this is an example of?
If the brain will respond by the previously devoted to vision for other abilities. This is an example of brain plasticity.
What is brain plasticity ?
Brain versatility, otherwise called brain adaptability or cerebrum pliancy, can be characterized as the capacity of the sensory system to change its movement in light of characteristic or extraneous improvements by redesigning its design, capabilities, or associations.
Aprincipal property of neurons is their capacity to change the strength and viability of synaptic transmission through a different number of movement subordinate instruments, ordinarily alluded as synaptic pliancy. Research in the previous century has showed that brain pliancy is a central property of sensory systems in species from bugs to people.
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If a youngster loses their vision, their brain will adapt by using the space that was once reserved for vision for other skills. A good illustration of brain plasticity is this.
What is brain plasticity?The ability of the nervous system to alter its activity in response to intrinsic or external stimuli by changing its structure, functions, or connections is known as neural plasticity, also known as neuroplasticity or brain plasticity.
Recovery from a stroke or severe brain damage, such as a head injury, is one illustration of brain plasticity.
Due to inadequate blood flow to the brain, these diseases can result in the death of nerve cells. The inability of nerve cell tissue to regenerate or recover is well known.
Therefore, a child loses vision, their brain will respond by using the area previously devoted to vision for other abilities is an example of brain plasticity.
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3. Consider the technology behind each type of microscope. Why can light microscopes produce images in their natural color, while scanning electron and transmission electron microscopes only produce grayscale images?
first one to answer i will give a brainiest too
Light microscopes are based on light thus they produce colored images.
What is the microscope?The microscope is a device that could be used to see the interior of a material. The microscope is basically used for the purpose of study. The compound microscope was invented by Robert Hooke.
The microscope was very much important to the study of cells and the discovery of microorganisms. There are several types of microscopes that have been used in the study of many different issues in science.
The light microscope is based on the use of light and light is a combination of different wavelengths of colors as such we can see images with their natural colors when we use a light microscope.
On the other hand, electrons do not have color as light does. This is why scanning electron and transmission electron microscopes only produce grayscale images.
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The process of transferring microorganisms from one medium to another is known as?
The process of transferring microorganisms from one medium to another is known as subculturing
That been said, microorganisms are highly important simply because they multiply faster on media in which they are cultured or subcultured.
Interestingly, one key characteristics about them is that they are used extensively for research purposes
So when a microorganism is transferred from a particular medium to another, it is called subculturing
MicroorganismsMicroorganisms can simply be defined as those living organisms which are so minute or small such that they cannot be seen with the the ordinary or unaided eyes but only with the aid of microscope.
The study of microorganisms is known as microbiology Generally microorganisms may be unicellular ( meaning those organisms with just a single cell ) or multicellular ( that is, organisms which possess two or more cells )So therefore, the process of transferring microorganisms from one medium to another is known as subculturing
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convert the following to seconds 5 minutes 7 seconds
Answer: 307 seconds
Explanation: one second is 60 seconds. Do 60 times five which gives you 300. Then add the extra seven seconds. Your answer: 307 seconds!
I hope this is helpful!
The large sheets of cells covering all the surfaces of the body exposed to the outside world and lining the outside of organs are all called ________ tissue.
The large sheets of cells covering all the surfaces of the body exposed to the outside world and lining the outside of organs are all called Epithelial tissue.
Epithelial tissue is one of the four types of tissue in the human b. It is formed by a group of cells that overlap each other to give life to the internal layers of different organs and the external layers of other structures of the body. It is divided into superficial (lining) and glandular (secretory) epithelium.
It has the following functions:
Coats the external part of the body.It serves as mechanical protection and protection against moisture loss.The tissues that line the internal surfaces of the organism have the functions of: transport, filtration, absorption, secretion and excretion.What is body mass?It is the amount of mass associated with a person's body.
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What types of protein defects could result in apoptosis occurring when it should not? What types could result in apoptosis not occurring when it should?
If a receptor protein for a death-signaling molecule was defective, it would activate even when there was no death signal, resulting in apoptosis when it would not normally occur.
If similar faults in any of the proteins in the signaling pathway enabled relay or response proteins in the lack of interaction with the preceding protein or second messenger in the pathway, the effect would be the same.
Apoptosis would not happen when it should if any protein in the pathway was defective in its capability to react to a contact with an early protein, other molecule, or ion.
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Which substance is an inorganic molecule made during photosynthesis?
OA. C6H1206
B. 02
C. NADPH
OD. CO₂
Answer:
it is carbon dioxide from carbon
Explanation:
it can be incorporated into organic molecule
Which group(s) of organisms uses cellular respiration to release energy from organic molecules?
The cells of animals, plants, and fungi, as well as those of algae and other protists, all engage in cellular respiration.
Cellular respiration is the process that all living things use to convert organic molecules into energy. The chemical process that breaks down food molecules to produce adenosine triphosphate, which is used for energy, is known as cellular respiration (ATP). As a result, organisms can now use energy from food molecules to perform everyday tasks. Oxygen is normally present when cells respire. This is called aerobic respiration. Anaerobic respiration occurs when oxygen is absent or present in very small amounts. Anaerobic respiration is essential to the life of some organisms, including many bacteria. Yeast and some bacteria use an anaerobic respiration process known as fermentation. The cellular respiration equation describes the process by which glucose molecules combine with oxygen to produce energy.Therefore, all most all organisms use cellular respiration.
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How does an estrous cycle differ from a menstrual cycle? In what animals are the two types of cycles found?
An estrous cycle differs from a menstrual cycle in many ways as the estrous cycle happens in non-primate mammalian females, while the menstrual cycle happens in primate females.
Difference between estrous cycle and menstrual cycle:
The estrous cycle is the kind of conceptive cycle where the endometrium layer isn't shed away in that frame of mind of treatment; rather, it is reabsorbed. The event of this cycle can be one time per year or at least a few times, with a fluctuating stretch of time. Sexual receptivity is just found at the ovulation stage.
Conversely, the feminine menstrual cycle is portrayed by the shedding of the endometrial covering without any treatment. This cycle happens consistently (till menopause), and sexual receptivity is tracked down all through the cycle.
Animals in which these two types of cycles are found:-
The estrous cycle happens in non-primate mammalian females, while the menstrual cycle happens in primate females In creature order, vertebrates have a place with the class Mammalia; these are portrayed by the furry body, minuscule bones of the ear, and the presence of milk-delivering organs in the female individuals.Warm-blooded creatures are characterized by more modest gatherings in light of their different life structures and physiology.In warm-blooded creatures, proliferation happens through sexual mode and requires the association of gametes; this association happens inside the female regenerative design.To learn more about the estrous cycle and menstrual cycle, visit: https://brainly.com/question/9531456
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Which type of molecules DO NOT need a protein to cross the cell membrane?
What is the single greatest threat to biodiversity? a. overharvesting of commercially important species b. habitat alteration, fragmentation, and destruction c. introduced species that compete with native species d. pollution of Earth's air, water, and soil
Habitat alteration is the single greatest threat to biodiversity. So the correct answer option (b) habitat alternation.
Biodiversity is all the extraordinary varieties of existence you will discover in one area the variety of animals, flora, fungi, or even microorganisms like bacteria that make up our natural world. Every of these species and organisms paintings together in ecosystems, like an tricky internet, to keep stability and guide existence.
Most people recognize biodiversity via species—a group of individual living organisms that can interbreed. Examples of species consist of blue whales, white-tailed deer, white pine trees, sunflowers, and microscopic bacteria.
Ecological existence support biodiversity offers functioning ecosystems that supply oxygen, smooth air and water, pollination of plant life, pest manipulate, wastewater remedy and many atmosphere services.
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compare and contrast algae, fungi, and protozoa by placing statements into the correct columns. not all statements are used.
The comparison of the algae, fungi, and protozoans, using the given operations are as follows;
Algae
Single cell or multicellular membersEukaryoticHave cell wallsFungi
Members are not photosyntheticSingle cell or multicellular membersEukaryoticHave cell wallsProtozoans
Members are not photosyntheticSingle cell or multicellular membersEukaryoticHow can the microorganisms be compared?The possible statement obtained from a similar question are;
Members are not photosyntheticMembers are multicellularSingle cell or multicellular membersProkaryoticEukaryoticMembers do not have a cell wallThe characteristics of algae are;
Undergo photosynthesisCan be either unicellular or multicellular organismsLack of defining body structures such as stems, leaves, and rootsLocated in moist areasEukaryoticHave cell wallsThe characteristics of fungi are;
Fungi have a cell wallEukaryoticUnicellular or exists as filamentsFungi are not photosyntheticThe characteristics of protozoa are;
Protozoans are not photosyntheticSingle celledEukaryoticProtozoans do not have a cell wallThe correct responses are therefore;
Algae
Single cell or multicellular membersEukaryoticHave cell wallsFungi
Members are not photosyntheticSingle cell or multicellular membersEukaryoticHave cell wallsProtozoans
Members are not photosyntheticSingle cell or multicellular membersEukaryoticPlease find attached an image of an spread sheet showing the question as obtained from a similar question posted on the internet
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A population of raccoons lives in a forested area with lots of trees. The raccoons eat insects, eggs, berries, nuts, and small animals such as
rodents and frogs. One of the main predators of the raccoons are coyotes, which also prey on rabbits.
Identify whether the changes to the ecosystem are more likely to increase or decrease the population of raccoons.
More permits to hunt
Pollution from a nearby farm
disease decreases
coyotes are approved.
decreases the population
the population of rabbits
of insects in the forest.
in the forest.
Large parts of the forest
Additional rain increases
Frogs in a pond near
are cut down for wood.
the population of plants
the forest experience |
in the forest.
population surge.
Increases Population
Decreases Population
Answer:
here you go :
Explanation:
INCREASES : addition rain makes more plants grow ( if there are more plants , raccoons can get more food and plus the rabbits will also eat the plants so the coyotes might go for either which doesnt freak out the raccoons as much )
INCREASES : frogs grow in population ( similar to the rain / plant example , the raccoons will have more food available to them , which means that the babies wont die and raccoons wont die of hunger )
INCREASES : more coyote kill permits ( i mean , people who hunt want some type of challenge and saying you shot a coyote is way cooler than saying you shot a raccoon , and also less coyotes , less raccoons they need to eat )
DECREASES : pollution from the farm kills insects ( the raccoons will have less food since they eat insects which means more raccoons will die of hunger )
DECREASES : the disease kills off rabbits ( if there arent rabbits , then the coyotes will only have raccoons to eat so theyll end up killing off the raccoons )
DECREASES : wood is cut down ( thats going to remove the food that the raccoons eat such as eggs and rodents and nuts , so theyre probs going to starve to death )
please tell me this helps lol
a monoclonal antibody against cd148, a receptor-like tyrosine phosphatase, inhibits endothelial-cell growth and angiogenesis
Vascular endothelial cells express CD148, a protein tyrosine phosphatase that resembles a receptor, in large amounts.
Define angiogenesis.The creation of new blood vessels is known as angiogenesis. The development of new blood vessels is called angiogenesis. The migration, development, and differentiation of endothelial cells, which line the interior of blood arteries, are a part of this process.
Chemical signals sent throughout the body regulate the angiogenesis process. Certain of these signals, including vascular endothelial growth factor (VEGF), bind to receptors on the surface of healthy endothelial cells. Signals that encourage the formation and survival of new blood vessels are started inside endothelial cells when VEGF and other endothelial growth factors attach to their receptors. Blood vessel development is hampered by additional chemical signals known as angiogenesis inhibitors.
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the complete question is:
a monoclonal antibody against cd148, a receptor-like tyrosine phosphatase, inhibits endothelial-cell growth and angiogenesis. Explain
If your doctor gave you a copy of your ECG recording, how could you determine what your heart rate had been during the test?
Cardiac rate may be easily determined for regular heart beats using the big squares (0.2s) on an ECG. Simply count the number of huge squares between two successive R waves.
What information does an ECG trace offer about the heart?Arrhythmias, which occur when the heart beats too slowly, too quickly, or irregularly, can be detected with an ECG. Coronary heart disease develops when blood flow to the heart is impeded or interrupted owing to fatty material accumulation. Heart attacks occur when the heart's blood supply is unexpectedly cut off.
An ECG records electrical impulses to indicate how quickly the heart beats, the rhythm of the heart beats (steady or irregular), and the strength and timing of the electrical impulses as they move through the various regions of the heart. ECG changes can suggest a range of heart issues.
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