What is on a transplanted organ that causes the transplant recipient's body to reject it?
Answers
Answer:
Major histocompatibility complex (MHC) antigens
Explanation:
The process in which recipient body rejects the transplanted organ is called a allograft rejection or transplantation rejection.
A transplanted organ contains Major histocompatibility complex (MHC) antigens which are required to be accepted by the recipient's body to function properly but T cells in recipient's body become alloreactive and recognize MHC antigens (donor-derived antigens) as foreign and starts making antibodies against it. Which means the recipient's body is rejecting the transplanted organ.
Hence, the correct answer is "Major histocompatibility complex (MHC) antigens".
Related Questions
skin color and height are polygenic traits which means
Answers
Skin color and height are examples of polygenic traits, which means that they are influenced by multiple genes. A polygenic trait is a trait that is controlled by two or more genes, and the effect of each gene is small.
Skin color is determined by the amount and type of pigments, such as melanin, produced in the skin. This polygenic trait is controlled by several genes, each with a small effect on the final outcome. Height is also a polygenic trait, Skin color is influenced by multiple genes and environmental factors. Many genes have been identified that play a role in determining height, but the exact number and Skin color they interact is not yet fully understood. In addition to genetics, environmental factors, such as nutrition and overall health, also play a role in determining polygenic trait an individual's height. Both Skin color and height, are complex traits and can't be determined by a single gene but by a combination of multiple genes and environmental factors.
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Which type of archaebacteria lives in the intestines of cows?
O a) halophiles
b) methanogens
c) thermophiles
d) acidophiles
Answers
Answer:
b Methanogens
Explanation:
No need for it
Which organelle is used as temporary storage for water, waste products, food, and other cellular material?
mitochondrion
lysosome
centriole
vacuole
Answers
Which compound can provide the energy for chemosynthesis? A. Oxygen B. Hydrogen sulfide C. Carbon dioxide D. Water
Answers
Answer:
1. hydrogen sulfide
2. alkaliphiles
3. a lanternfish on the Atlantic Ocean floor
4. remove methane and hydrogen sulfide
5. methane
Explanation:
Chemosynthesis Quick Check
Just took it xd <3
The compound can provide the energy for chemosynthesis is light photon and carbon dioxide. Thus, option C is correct.
What is photon?
The energy stored in bundles or the packets has been known as the photon. Chemosynthesis has been referred to the process by which some organism obtain food from inorganic chemicals rather than from light. There are many chemosynthetic bacteria that obtain food by the metabolism of methane, hydrogen sulfide or carbon dioxide.
Light photons are not required for chemosynthesis. It is only necessary during photosynthesis. Chemosythesis has been involves the inorganic chemicals therefore, light photons are not required during chemosynthesis.
The organism which provides evidence that matter and energy can be cycled through an ecosystem without sunlight is a lanternfish on the Atlantic Ocean floor and the technique which will prove most effective to eliminate the greatest number of organisms is to remove methane and hydrogen sulfide.
Therefore, The compound can provide the energy for chemosynthesis is light photon and carbon dioxide. Thus, option C is correct.
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2. True or false. Trees have to attract bark from other sources. *
O pol
True
False
Answers
¿ Que condiciones del ambiente influyen en el comportamiento de la mariposa
monarca?
Answers
Answer:
Durante el invierno las mariposas monarca migran hacia el sur en busca de temperaturas más cálidas, y luego en primavera migran nuevamente hacia latitudes mayores
Explanation:
La mariposa monarca (Danaus plexippus) es un insecto lepidóptero que habita América del Norte, la cual es conocida por llevar a cabo una de las migraciones más extraordinarias observadas en el reino animal. La subespecies de mariposas monarca D. plexippus plexippus es popularmente conocida porque sus poblaciones realizan una migración masiva hacia el sur durante los meses de agosto a octubre (es decir, antes del comienzo del invierno en el hemisferio norte) y, posteriormente, estas poblaciones migran nuevamente hacia el norte en primavera. Recientes estudios han determinado cómo la temperatura induce un cambio de dirección de vuelo (es decir, el patrón de migración) de estas mariposas, lo cual demuestra que los efectos del cambio climático reprentan un grave peligro no sólo para la biodiversidad de Danaus plexippus, sino también para las especies vegetales autóctonas que se benefician de este polinizador natural y, en última instancia también, para toda la cadena trófica que abarca su radio de migración. Es por esta razón que el aumento en las temperaturas medias causado por el calentamiento global ha causado una gran alarma en la comunidad científica sobre sus efectos sobre esta especie.
3. Why do you think it is important for a cell to be selective?
Answers
Answer:
It it important for a cell to be selective because this function allows for certain molecules to let in and let out, if we had a non permeable cell, it wouldn't allow anything to leave nor enter. If we had a 100% permeable cell, EVERYTHING would be permitted to go through, harmful or not.
Explaination:
N/A, I believe the answer itself is an explanation.
Bases produce excess of (blank) ions
a)hydroxide
b)oxygen
c)nitrogen
d)hydronium
Answers
Answer:
B, Oxygen. :)
Explanation:
besides detoxification of drugs such as acetaminophen, the liver is involved in and regulates several different biochemical pathways. which of the following is not a biochemical activity of the liver? question 34 answer choices a. regulation of carbohydrate metabolism such as glycogenolysis, glycogenesis, and gluconeogenesis b. production of lipases and bile for fat digestion c. deamination of amino acid and conversion of the resulting ammonia to urea d. lipid metabolism, including cholesterol and lipoprotein synthesis
Answers
The production of lipases and bile for fat digestion is not a biochemical activity of the liver.
The liver is a vital organ involved in numerous biochemical activities that contribute to overall metabolism and homeostasis. It plays a central role in regulating carbohydrate metabolism, such as glycogenolysis (breakdown of glycogen), glycogenesis (formation of glycogen), and gluconeogenesis (production of glucose from non-carbohydrate sources). The liver also performs deamination of amino acids, converting the resulting ammonia to urea, which is excreted in urine. Additionally, the liver is responsible for lipid metabolism, including cholesterol and lipoprotein synthesis.
However, the production of lipases and bile for fat digestion is not a biochemical activity of the liver. Instead, lipases are primarily produced by the pancreas and released into the small intestine to aid in the breakdown of dietary fats. Bile, which is essential for fat digestion and absorption, is produced by the liver but stored and released by the gallbladder into the small intestine.
While the liver contributes to overall lipid metabolism, its specific role is not in the production of lipases and bile for fat digestion.
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What is atmospheric perspective? a. the effect produced by rounding objects to appear three-dimensional. b. the effect produced by techniques that make objects appear to go back into the distance, creating a realistic look. c. the effect produced by diffusion of light in the atmosphere whereby more distant objects have less clarity of outline and are lighter in tone. please select the best answer from the choices provided a b c
Answers
The Atmospheric perspective is the effect produced by diffusion of light in the atmosphere whereby more distant objects have less clarity of outline and are lighter in tone.
What is atmospheric perspective?Atmospheric perspective refers to a form.of illusional effect and atmosphere produce or reflect on an object. It is also the method use to create the illusion of depth in a painting or drawing work by changing the colour so as to simulate changes effected by the atmosphere on the colours of things seen at a distance.
Therefore, The Atmospheric perspective is the effect produced by diffusion of light in the atmosphere whereby more distant objects have less clarity of outline and are lighter in tone.
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Answer:
Its CExplanation:
Which of the following is treated with cephalosporins because the organism is resistant to penicillin and fluoroquinolones?
A) Mycoplasma hominis
B) Haemophilus ducreyi
C) Neisseria gonorrhoeae
D) Treponema pallidum
E) Gardnerella vaginalis
Answers
Neisserua gonorrheae
Cephalosporins are now widely used for the treatment of gonorrhoea, following the development of resistance to fluoroquinolones. In New Zealand the recommended treatment is IM ceftriaxone which is the same advice given by the United States Centres for Disease Control and Prevention (CDC).
An organism which causes a disease
A.host
B. Vector
C. Parasite
D. Pathogen
Answers
Answer:
D. Pathogen
Explanation:
a bacterium, virus, or other microorganism that can cause disease
How do the arteries of the pulmonary circulation differ.
Answers
How does blood flow in pulmonary arteries differ from that in other arteries quizlet? The pulmonary arteries carry oxygen-poor blood to the lungs, whereas the pulmonary veins carry oxygen-rich blood from the lungs to the left atrium of the heart. … This blood is rich in nutrients.
answer as soon as possible please and thank you
Answers
Answer:
Bro if you look it up on ur browser im sure you will find the answer im sure you will
Explanation:
what extraneous variables might have affected how the results came out in the osmosis experiment? describe three
Answers
1. Temperature: Changes in temperature can affect how quickly molecules move through the membrane, which can influence the rate of osmosis.
2. Concentration of the solution: A higher concentration of solutes in the solution can slow down the rate of osmosis.
3. Size of the molecules: Larger molecules may move more slowly through the membrane, which can impact the rate of osmosis.
What is osmosis?
Osmosis is the process by which substances, such as water, move from an area of higher concentration to an area of lower concentration through a selectively permeable membrane. Osmosis plays an important role in many biological processes, including the absorption of nutrients, the regulation of cell volume, and the movement of water across cell membranes.
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What would happen if cells did not specialize
Answers
Answer:
I do not know at all,....,.........
.
...
............
CN V, controls the muscles of mastication and is responsible for sensory perception in specfic regions of the head.
true or false
Answers
True, CN V (the trigeminal nerve) controls the muscles of mastication and is responsible for sensory perception in specific regions of the head.
Masticatory muscles are those that attach to the mandible and so create movements of the lower jaw.
The masticatory muscles are a set of muscles that are responsible for the chewing movement of the jaw at the temporomandibular (TMJ) joint, they improve the eating process, they help with food crushing, and they also function to approximation the teeth .
The four primary masticatory muscles arise from the surface of the skull and connect to the rami of the mandible at the TMJ. These muscles move in the following ways: elevation, depression, protrusion, retraction, and side to side movement. Three of the primary muscles are in charge of mandibular adduction, while one is in charge of mandibular abduction.
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what type of endangered dolphins are being tracked by artificial intelligence technology in new zealand, where only 63 adults in this subspecies live?
Answers
Answer:
Māui dolphins
Explanation:
Ye
help me its urgent i need help please help me
Answers
The correct matching of the given items are:
Omnivore- eats producers and consumersPopulation- all living and non-living things found in an areaSpecies- a group of living things, more than one organism.Ecosystem- describes a type of organism and what group it belongs to.What is an Organism?This refers to an individual animal or living thing that is uni-cellular.
Hence, the other answers are:
Community- a place where an organism lives and produces its own food.Limiting factors- anything that can limit the size of a populationCarnivore- eats herbivores, omnivores and other smaller carnivoresFood web: a network of food connected chains that shows a feeding relationship Symbiosis: a close relationship between species including mutualism, commensalism, parasitismRead more about ecosystem here:
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in a study of the forces involved when motor proteins
Answers
Motor proteins also produce force locally within the network of cytoskeletal polymers, which transmits these forces to determine the shape of each cell and, ultimately, the architecture of tissues and whole organisms. Chapters 37 to 39 and 44 illustrate how motors move cells and their parts.
Please provide an answer in 2-3
sentences.
In what atmospheric conditions does the Cook Strait experience particularly strong winds?
Answers
When there is a significant difference in atmospheric pressure between the Tasman Sea and the Pacific Ocean, strong winds can develop as air flows from high-pressure areas to low-pressure areas. This creates a channeling effect through the narrow Cook Strait, amplifying the wind speeds.
In addition to the pressure gradient, the Cook Strait's unique topography also plays a role in intensifying the winds. The narrowness of the strait and the surrounding mountainous terrain create a venturi effect, where the wind is squeezed through a narrow passage. This constriction increases the wind speed as it funnels through the gap.
Furthermore, the Cook Strait is susceptible to strong winds during certain weather patterns, such as the passage of frontal systems or the presence of strong low-pressure systems. These weather systems can enhance the pressure differences and lead to gusty winds in the area.
It's worth noting that the Cook Strait's wind patterns can vary throughout the year and are influenced by seasonal and meteorological factors. Local meteorological forecasts and historical data provide more specific and up-to-date information on the wind conditions in the Cook Strait.
Based on observational evidence, variations in the color of flamingos appears to be determined by their diet, and not their genes. Describe the steps of an investigation to provide evidence to support or refute this hypothesis.
Answers
Variations in the color of flamingos appear to be determined by their diet, and not their genes, which may be described in an investigation that provides evidence to support this hypothesis in which we see that color in offspring of flamingos changes in regard to parents while it is associated with food habits.
What is an observational study?An observational study is a type of experimental procedure in which field observations are used to confirm or reject our working hypothesis.
Therefore, with this data, we can see that observational studies are appropriate to confirm data in the field such as the reason for the color of the flamingo in this case.
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Today, some mountain ranges are rising due to tectonic plates colliding, and earthquakes are sometimes caused by tectonic plates sliding against each other. During Earth's past,
A.
the tectonic plates were not moving.
B.
similar tectonic movements were occurring.
C.
mountains were rising, but there were no earthquakes.
D.
there were earthquakes, but no mountains were rising.
Answers
The past of the earth was like that there were Similar tectonic movements were occurring.
What is tectonic plates?
Plate tectonics is used to define that, there is a widely held scientific idea that the Earth's lithosphere is made up of a series of huge tectonic plates that have been moving slowly since around 3.4 billion years ago.
Tectonic plates clashing now is causing some mountain ranges to rise, and earthquakes are sometimes produced by tectonic plates moving against each other. Similar tectonic motions were present in the past of the world.
Therefore, option D is correct.
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vitamin d toxicity is associated with: a. sunburns. b. suntan lotions. c. seafood. d. supplements.
Answers
The answer to the question is "d. supplements". Vitamin D toxicity is associated with: supplements.
Vitamin D is a fat-soluble vitamin that is essential for bone growth, development, and health in humans. It helps the body absorb calcium, which is necessary for bone formation and density.Vitamin D toxicity is a condition in which the body has too much vitamin D, leading to hypercalcemia (high levels of calcium in the blood). This condition can be caused by taking too many vitamin D supplements (especially if they are taken in high doses over a long period of time) or by consuming foods that are high in vitamin D. Vitamin D toxicity is associated with supplements. This is because supplements contain high doses of vitamin D, and taking too much can lead to toxicity. Some of the symptoms of vitamin D toxicity include nausea, vomiting, weakness, and frequent urination. In severe cases, it can lead to kidney damage and even death.
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The air and nutrients that are added to the fermenter are sterile. State why they must be sterile.
Answers
The air and nutrients that are added to the fermenter must be sterile in order to prevent contamination from pathogens or other microorganisms that could disrupt the fermentation process.
What is fermentation?
Fermentation is a metabolic process during which organic molecules such as glucose are converted into energy-containing molecules such as ethanol, carbon dioxide, and/or organic acids. This process is often used in the production of beer, wine, and other alcoholic beverages, as well as in food production, such as the production of yogurt, cheese, and other fermented dairy products.
Contamination can lead to off-flavors, off-odors, and other undesirable qualities in the end product. Additionally, it may cause the fermentation process to be less efficient, leading to longer fermentation times or even a complete failure.
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To form amino acids from the main chemicals in Twinkies, what needs to happen? They need to be broken apart into individual atoms and rebuilt through RNA translation. They need to be broken apart into individual atoms and rebuilt through RNA translation. These compounds are already amino acids that need no further construction. These compounds are already amino acids that need no further construction. They can't be used to form amino acids, but are used in cellular respiration to create ATP. They can't be used to form amino acids, but are used in cellular respiration to create ATP. Bonds between their elements can be broken and reformed to construct amino acids. Bonds between their elements can be broken and reformed to construct amino acids.
Answers
Answer:
They need to be broken apart into individual atoms and rebuilt through RNA translation.
Explanation:
To form an amino acid the individual elements needs to be joined together to form a compound.
An amino acid is made up of nitrogenous bases they are joined together to form codon and are translated to amino acid
The process of translation in deoxyribonucleic (DNA) acid helps to translate the bases into an amino acid. This amino acids are said to be the buildings blocks of protein they perform specific function in the body system.
A margarita made from 4 fl. oz. of the mix plus 1.5 fl. oz. of tequila (containing 15 g alcohol) will create a drink that provides how many calories?
Answers
Answer:
215 calories
Explanation:
Calories are energy forms found in drinks. Each drink has a unique amount of calories after some biochemical analysis has been carried out. In this case, 1.5 oz of tequila contains 98 calories.
A margarita made from 4 fl. oz. of the mix contains 117 calories which when added will give 215 calories for the whole drink. This is why the answer and total calorie present in the drink is 215.
Which of the following describes a metabolic pathway that is likely to result in a net release of energy?
Answers
Answer:
The metabolic pathway that releases energy by breaking down complex molecules into simpler substances is known as catabolism.
what is the microwaves wavelength in meters
Answers
The proteins in the cell membrane allow substances to come or go based on their concentrations. This is an important part of _____ which maintains the immediate conditions necessary for life.
Answers
Answer:
The proteins in the cell membrane allow substances to come or go based on their concentrations. This is an important part of Homeostasis which maintains the immediate conditions necessary for life.