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- Question
Which of the following is most likely to produce anaphylaxis in a susceptible individual?
Options- A. Pollen
- B. Mold
- C. Dust
- D. Bee sting
- Correct Answer
- Bee sting
- 1. A protein that shows infinite cooperative for binding of n ligands will
Options- A. show a Hill coefficient (nH) of 0.0
- B. only be found in either the unliganded form or the fully liganded form
- C. show a Hill coefficient (nH) of n
- D. both (b) and (c) Discuss
- 2. Small molecules affect hemoglobin (Hb) by
Options- A. decreasing Hb affinity for O2
- B. increasing [H+]
- C. increasing Hb affinity for O2
- D. increasing [H+] and decreasing Hb affinity for O2 Discuss
- 3. Bisphosphoglycerate (BPG) cannot bind to the oxygenated R state of hemoglobin because
Options- A. it is displaced from the heme by oxygen
- B. it is displaced from the heme by movement of the proximal histidine
- C. its binding pocket becomes too small to accommodate BPG
- D. BPG binds to the R state with the same affinity as the T state Discuss
- 4. In hemoglobin, allosteric effects occur
Options- A. only in humans
- B. for maintaining Fe in the Fe2+ state
- C. to minimize oxygen delivery to the tissues
- D. to maximize oxygen delivery to the tissues Discuss
- 5. O2 binding to hemoglobin results in
Options- A. 100-fold higher affinity for the last O2 bound than for the first
- B. extensive protein conformational change
- C. both (a) and (b)
- D. 100-fold lower affinity for the last O2 bound than for the first Discuss
- 6. The maturation of T cells and the production of particular T cell receptors occurs in the
Options- A. thyroid gland
- B. thymus gland
- C. testes
- D. all of these Discuss
- 7. Which of the following produces the antibodies employed in the specific immune response of vertebrates?
Options- A. B lymphocytes
- B. T lymphocytes
- C. Neutrophils
- D. Macrophages Discuss
- 8. Which of these is part of the lymphoid system in humans?
Options- A. Liver
- B. Stomach
- C. Tonsils
- D. Kidneys Discuss
- 9. Which of these is a type of specific defense against pathogens?
Options- A. Lymphocytes
- B. Macrophages
- C. Phagocytes
- D. Leukocytes Discuss
- 10. What is the behavior in which T cells and B cells constantly travel throughout the body seeking out and destroying foreign substances?
Options- A. Antibody-mediated immune response
- B. Immune surveillance
- C. Cell-mediated immune response
- D. Vaccination Discuss
Immune System problems
Search Results
Correct Answer: both (b) and (c)
Correct Answer: increasing [H+] and decreasing Hb affinity for O2
Correct Answer: its binding pocket becomes too small to accommodate BPG
Correct Answer: to maximize oxygen delivery to the tissues
Correct Answer: both (a) and (b)
Correct Answer: thymus gland
Correct Answer: B lymphocytes
Correct Answer: Tonsils
Correct Answer: Lymphocytes
Correct Answer: Immune surveillance
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