Which statement about Major Histocompatibility Antigens is not true?
Select one:
a. they are found on every cell in the human body
b. there are class I and class II antigens
c. class II antigens are only found on antigen-presenting cells like macrophages
d. they are recognized by T cell receptors along with foreign epitopes
e. all of the above are true
Vl
Which statement about Major Histocompatibility Antigens is not true?
Select one:
a. they are found on every cell in the human body
b. there are class I and class II antigens
c. class II antigens are only found on antigen-presenting cells like macrophages
d. they are recognized by T cell receptors along with foreign epitopes
e. all of the above are true
Vl
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1. | In people infected with human cytomegalovirus, class I MHC andb2-microglobulin are produced, but very little mature class I MHCis found at the cell surface. Inhibition of which of the followingmolecules by human cytomegalovirus may account for thisphenomenon? | ||||||||||
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2. | Your chances of having the same MHC haplotype as your siblingare: | ||||||||||
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3. | Which of the following is the BEST example of self-MHCrestriction of T cells? | ||||||||||
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4. | MHC molecules: | ||||||||||
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5. | Tasmanian devils are a largely inbred population with littlediversity in the MHC. Which of the following would be a likelyoutcome of this? | ||||||||||
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6. | How many different MHC classical class I proteins does eachnucleated cell in a human heterozygous at the MHC locusexpress? | ||||||||||
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7. | MHC polymorphisms tend to cluster: | ||||||||||
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8. | A mutation that renders the MHC class II molecule DMnonfunctional would likely lead to: | ||||||||||
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9. | The human MHC locus is one of the most polymorphic regions ofthe genome. What does this mean? | ||||||||||
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10. | Which of the following is an example ofcross-presentation? | ||||||||||
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Please briefly explain reasoning for all questions.
1)
Which of the following is a component of a vertebrate kidney? (Select all correct choices.) | |||||||||||
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2)
In organisms, the ability to control osmosis depends on the properties of the plasma membranes of individual cells. Based on their ability to permit the free movement of water and some solutes, these membranes are best described as: (select all correct choices) | |||||||||||
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3)
True or false: The inner cell mass of the blastocyst becomes the embryo, while the outer cell layer of the blastocyst forms part of the placenta. | |||||
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4)
Which of the following accurately characterizes the early cleavage divisions in most animals, although not necessarily in mammals? | |||||||||||
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5)
A key difference between hormonal regulation of the reproductive systems of males and females is that: | |||||||||||
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6)
Compared to sexual reproduction, asexual reproduction: (select all correct choices) | |||||||||||
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7)
True or false: In response to LH and FSH, ovaries secrete estrogen and progesterone. | |||||
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8)
During the luteal phase of the menstrual cycle, if the oocyte is not fertilized, a number of events occur which are listed below. Select the answer that places the events in the correct chronological order. | |||||||||||
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9)
If an antibody is missing its Fc fragment, what would happen if this antibody encounters its target antigen in the bloodstream? Select all correct choices. | |||||||||||
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10)
If an individual carries a mutation that results in a complete lack of MHC class I proteins, how would the individualâs immune response be affected? Select all correct choices. | |||||||||
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11)
If an individual carries a mutation that results in a complete lack of MHC class I proteins, how would the individualâs immune response be affected? Select all correct choices. | |||||||||
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12)
Which of the following statements is true regarding T cell receptors? Select all correct choices. | |||||||||||
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