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Home ‣ Biochemistry ‣ Carbohydrate See What Others Are Saying!
- Question
The ultimate source of energy that sustains living systems is
Options- A. glucose
- B. oxygen
- C. sunlight
- D. carbon dioxide
- Correct Answer
- sunlight
- 1. The antibiotic penicillin is a small molecule that does not induce antibody formation. However, penicillin binds to serum proteins and forms a complex that in some people induces antibody formation resulting in an allergic reaction. Penicillin is therefore
Options- A. an antigen
- B. a hapten
- C. an immunogen
- D. both an antigen and a hapten Discuss
- 2. During the lag period between antigen contact and detection of adaptive immunity,
Options- A. antigen is hidden from the immune system in macrophages
- B. innate immune effectors are eliminating antigen
- C. innate immunity blocks the activation of adaptive immune effector cells
- D. new B and T cells with the appropriate antigen specificity must be produced in the bone marrow Discuss
- 3. For specific antigen recognition by T cells,
Options- A. antigen is bound by a T cell membrane antibody
- B. denaturation of antigen does not reduce epitope recognition
- C. MHC molecules are not required
- D. antigen exposure during T cell maturation is required Discuss
- 4. Which enzyme is involved in carbon-fixation reaction?
Options- A. NADP reductase
- B. Cytochrome reductase
- C. Ribulose bisphosphate carboxylase
- D. Glycerol kinase Discuss
- 5. When populations are small, gene frequencies can change from generation to generation and some alleles may become fixed in a population. This is called __________ .
Options- A. assortative mating
- B. inbreeding
- C. heterosis
- D. genetic drift Discuss
- 6. Polysaccharides on the surface of infecting microorganisms can also activate complement directly in the absence of
Options- A. antibody via the alternative pathway
- B. antigen via the alternative pathway
- C. antibody via metabolic pathway
- D. none of the above Discuss
- 7. If a person is vaccinated against a disease sometime in the past, which of the following is currently in your body?
Options- A. The disease organism itself and antigens for the disease organism
- B. A very high level of antibodies against the disease antigens
- C. Memory B lymphocytes for the antigen of this disease organism
- D. All of the above Discuss
- 8. Which of the following is correct?
Options- A. HIV is a retrovirus that kills human helper T cells
- B. Causes acquired immune deficiency syndrome (AIDS)
- C. Cripples the immunity systems
- D. All of the above Discuss
- 9. The immune response to a booster vaccine is called a(n)
Options- A. cellular response
- B. innate response
- C. primary response
- D. secondary response Discuss
- 10. How many molecules of ATPs are synthesized per NADH oxidation?
Options- A. 2
- B. 1
- C. 3
- D. 4 Discuss
More questions
Correct Answer: both an antigen and a hapten
Correct Answer: innate immune effectors are eliminating antigen
Correct Answer: denaturation of antigen does not reduce epitope recognition
Correct Answer: Ribulose bisphosphate carboxylase
Correct Answer: genetic drift
Correct Answer: antibody via the alternative pathway
Correct Answer: All of the above
Correct Answer: All of the above
Correct Answer: secondary response
Correct Answer: 3
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