12. Why aren't we very worried about the potential presence of B cells that recognize host...
Homework Answers
B cells that recognize host cells are negatively selected during thymic education where they are primed for self tolerance i.e those cells that recognize self antigens they undergo apoptosis , don't survive further.
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12.
Why aren't we very worried about the potential presence of B cells
that recognize host...
Why don't we worry about the potential presence of B cells that recognize host antigens?
Why don't we worry about the potential presence of B cells that recognize host antigens?
Why are oncofetal proteins good targets for immune surveillance against tumors? A. NK cells recognize these...
Why are oncofetal proteins good targets for immune surveillance against tumors? A. NK cells recognize these antigens. B. Negative selection in the thymus has not taken place for these antigens. C. Positive selection has eliminated T cells that recognize these antigens. D. Because these antigens are ubiquitously expressed at all stages of an organism’s life. Any help would be wonderful, thank you.
Which of the following statements about how B and T cells recognize antigen are true? Correct...
Which of the following statements about how B and T cells recognize antigen are true? Correct any false statements. a. B cells only recognize antigen presented by class I or class II MHC molecules. b. Both cell types can recognize extra-cellular antigen free-floating in solution. c. Both cell types recognize extracellular matrix-bound antigens. d. T cells only recognize antigen presented by class I or class II MHC molecules.
We talked quite a bit about textbook monopoly theory and its potential weaknesses. Why does the...
We talked quite a bit about textbook monopoly theory and its potential weaknesses. Why does the theory appear to be inapplicable (that is, why doesn’t there seem to be much evidence in the real world)? (I’m looking for a very specific answer, as we discussed it often.)
which one is correct answer? QUESTION 15 Why are thymocytes with very low interactive avidity with...
which one is correct answer?
QUESTION 15 Why are thymocytes with very low interactive avidity with self-MHC of no potential value?. O a. T cells do not need MHC molecules to recognize antigen O b. No recognition of self can lead to autoimmune disease. O c. T cells must recognize self MHC in order to recognize antigen O d. None of the above
16. We said that MHC2 is mainly for presentation of exogenous antigens, whereas MHC1 is mainly...
16. We said that MHC2 is mainly for presentation of exogenous antigens, whereas MHC1 is mainly for presentation of endogenous antigens. Why is this so? A. MHC2 is on the outside of cells, MHC1 is on the inside. B. MHC2 binds to bacteria to allow macrophages to engulf the bacteria. C. MHC1 is found in the nucleus of infected cells, MHC2 in the cell membrane. D. MHC1 is involved in elimination of antibodies that recognize self antigens. E. MHC2 passes...
We talked a lot about Treg cells and their importance not only in the immune system,...
We talked a lot about Treg cells and their importance not only in the immune system, but in overall health and disease. Explain each of the following about Treg cells, using sketches where they aid your explanations. A. How do Treg cells help shut off an immune response that has developed against a pathogen once the pathogen is no longer present? B. How does the presence of Treg cells influence "allergies" that develop in response to food we eat? ......
Environmentalists who were worried about the presence of barnacles along the Pacific Coast wanted to see...
Environmentalists who were worried about the presence of barnacles along the Pacific Coast wanted to see whether Oregon had more barnacles than California. They randomly selected 7 locations in California and 6 locations in Oregon. Working at the edge of the water in each location, they put down frames that covered 0.25 square meters and counted the barnacles inside the frame. Their results are summarized in the table below. Group State # of Locations (n) Sample Mean Number of Barnacles...
We talked quite a bit about textbook monopoly theory and its potential weaknesses. Why does the...
We talked quite a bit about textbook monopoly theory and its potential weaknesses. Why does the theory appear to be inapplicable (that is, why doesn’t there seem to be much evidence in the real world)?
Why is there not a resting membrane potential in autorhythmic cells? A) The Cat+ channels open too early B) The Kt...
Why is there not a resting membrane potential in autorhythmic cells? A) The Cat+ channels open too early B) The Kt channels are not finished closing when the Cat+ channels open C) The lf channels are open when repolarization ends D) The lf channels are not open when depolarization begins Which cells secrete renin in response to low blood pressure? A) granular cells C) myogenic cells B) macula densa cells D) tubulorenal cells What is the MAIN reason intercalated disks...
which one is correct answer?
QUESTION 15 Why are thymocytes with very low interactive avidity with self-MHC of no potential value?. O a. T cells do not need MHC molecules to recognize antigen O b. No recognition of self can lead to autoimmune disease. O c. T cells must recognize self MHC in order to recognize antigen O d. None of the above
16. We said that MHC2 is mainly for presentation of exogenous antigens, whereas MHC1 is mainly for presentation of endogenous antigens. Why is this so? A. MHC2 is on the outside of cells, MHC1 is on the inside. B. MHC2 binds to bacteria to allow macrophages to engulf the bacteria. C. MHC1 is found in the nucleus of infected cells, MHC2 in the cell membrane. D. MHC1 is involved in elimination of antibodies that recognize self antigens. E. MHC2 passes...
Why is there not a resting membrane potential in autorhythmic cells? A) The Cat+ channels open too early B) The Kt channels are not finished closing when the Cat+ channels open C) The lf channels are open when repolarization ends D) The lf channels are not open when depolarization begins Which cells secrete renin in response to low blood pressure? A) granular cells C) myogenic cells B) macula densa cells D) tubulorenal cells What is the MAIN reason intercalated disks...
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