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- Question
What would happen if serum is omitted from the ELISA, but all other steps remain same?
Options- A. Anti-human Ig-conjugate would not bind and be washed away
- B. The OD values would be nearly the same as the assay control
- C. Both (a) and (b)
- D. Anti-human Ig-conjugate would bind non-specifically to the ELISA plate
- Correct Answer
- Both (a) and (b)
- 1. Gluconeogenesis is the
Options- A. formation of glycogen
- B. breakdown of glucose to pyruvate
- C. breakdown of glycogen to glucose
- D. synthesis of glucose from non-carbohydrate precursors Discuss
- 2. Which of the following is carried out when cAMP functions as a second messenger?
Options- A. Acts second in importance to AMP
- B. Activates all cytosolic protein kinases
- C. Activates the cAMP-dependent protein kinase
- D. Acts outside the cell to influence cellular processes Discuss
- 3. Both DNA gel electrophoresis and SDS-PAGE of proteins are similar because
Options- A. in both cases molecules migrate to the anode
- B. both techniques rely on a constant charge to mass ratio
- C. both techniques utilize the sieving properties of gels
- D. all of the above Discuss
- 4. What process in cellular respiration is essentially the reverse of carbon fixation in photosynthesis?
Options- A. Glycolysis
- B. Citric acid cycle
- C. Oxidative phosphorylation
- D. Alcohol fermentation Discuss
- 5. The electrons that are released by the splitting of water during photosynthesis ultimately end up in
Options- A. ATP
- B. O2
- C. NADPH
- D. rubisco Discuss
- 6. Rubisco (RuBP Carboxylase-oxygenase enzyme), glyceraldehyde 3-phosphate, and NADPH all play a role in
Options- A. the dark reactions of photosynthesis
- B. the breakdown of glucose into CO2
- C. cellular respiration when O2 is present
- D. alcohol fermentation Discuss
- 7. Why does the glycolytic pathway continue in the direction of glucose catabolism?
Options- A. There are essentially three irreversible reactions that act as the driving force for the pathway
- B. High levels of ATP keep the pathway going in a forward direction
- C. The enzymes of glycolysis only function in one direction
- D. Glycolysis occurs in either direction Discuss
- 8. A eukaryotic cell that can carry out only fermentation instead of the complete aerobic respiration of glucose
Options- A. produces less CO2
- B. is lacking in O2
- C. has mitochondria present
- D. all of these Discuss
- 9. Knockout mice are created by
Options- A. mutagenizing a mouse and selecting for mutant offspring
- B. creating a chimera by fusing cells from two different cell lines
- C. infecting the mouse with a retrovirus
- D. transfecting embryonic stem cells with an altered gene sequence Discuss
- 10. During the unfolding reaction of a helix, breakage of each hydrogen bond requires about 2kJ/mol. This implies hydrogen bonds are
Options- A. much stronger in proteins than in water
- B. not reformed with water
- C. slightly weaker in proteins than in water
- D. slightly stronger in proteins than in water Discuss
More questions
Correct Answer: synthesis of glucose from non-carbohydrate precursors
Correct Answer: Activates the cAMP-dependent protein kinase
Correct Answer: all of the above
Correct Answer: Citric acid cycle
Correct Answer: NADPH
Correct Answer: the dark reactions of photosynthesis
Correct Answer: There are essentially three irreversible reactions that act as the driving force for the pathway
Correct Answer: all of these
Correct Answer: transfecting embryonic stem cells with an altered gene sequence
Correct Answer: slightly stronger in proteins than in water
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