indicate whether you think the statements are true or false, and explain your reasoning. In each of your answers, provide 1-2 specific examples that support your position. (Each of your four answers is worth five points):
A) Memory cells require fewer distinct signals to be activated than naiÌve cells require.
B) Both B cells and T cells undergo âclonal selectionâ after they are activated by antigen.
C) A B cell is only able to present antigen to a T cell that includes the epitope to which the
B cellâs receptor bound.
D) T cells can recognize peptide antigens in the context of MHC I and MHC II regardless of
whether they are Thelper or Tcytotoxic cells.
E) B cells and T cells can both still make productive antigen receptors via V(D)J
recombination even if no P-nucleotides are introduced during the process.
F) Allelic exclusion takes place when a naiÌve T or B cell encounters its specific non-self antigen for the first time and determines whether or not to become activated.
G) B cells have more chances to make a productively rearranged antigen receptor than T cells do.
H) A majority of immature T cells developing in the thymus will survive both positive and negative selection.
I) The reason why T cells are the only type of white blood cell that requires maturation in a specialized organ outside the bone marrow is because they are the only ones that must have antigen processed and presented to them before they can be activated.
indicate whether you think the statements are true or false, and explain your reasoning. In each of your answers, provide 1-2 specific examples that support your position. (Each of your four answers is worth five points):
A) Memory cells require fewer distinct signals to be activated than naiÌve cells require.
B) Both B cells and T cells undergo âclonal selectionâ after they are activated by antigen.
C) A B cell is only able to present antigen to a T cell that includes the epitope to which the
B cellâs receptor bound.
D) T cells can recognize peptide antigens in the context of MHC I and MHC II regardless of
whether they are Thelper or Tcytotoxic cells.
E) B cells and T cells can both still make productive antigen receptors via V(D)J
recombination even if no P-nucleotides are introduced during the process.
F) Allelic exclusion takes place when a naiÌve T or B cell encounters its specific non-self antigen for the first time and determines whether or not to become activated.
G) B cells have more chances to make a productively rearranged antigen receptor than T cells do.
H) A majority of immature T cells developing in the thymus will survive both positive and negative selection.
I) The reason why T cells are the only type of white blood cell that requires maturation in a specialized organ outside the bone marrow is because they are the only ones that must have antigen processed and presented to them before they can be activated.
Related textbook solutions
Related questions
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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