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- Question
First evident that DNA is genetic material comes from the experiment of Griffith is
Options- A. transduction
- B. transformation
- C. replication
- D. translation
- Correct Answer
- transformation
- 1. The packing ratio of nucleosomes is about
Options- A. 6
- B. 8
- C. 7
- D. 9 Discuss
- 2. The sequence of letters 'WYQN' will represent
Options- A. Tryptophan, tyrosine, glutamic acid, asparagine
- B. Tryptophan, tyrosine, glutamine, asparagine
- C. Tryptophan, glutamine, tryptophan, asparagine
- D. Glutamine, tyrosine, tryptophan, aspartic acid Discuss
- 3. Protein fluorescence arises primarily from which residue?
Options- A. Arginine
- B. Tryptophan
- C. Tyrosine
- D. Phenylalanine Discuss
- 4. The unfolding of regular secondary structure causes
Options- A. little increase in the entropy of protein
- B. large decrease in the entropy of the protein
- C. no change in the entropy of the protein
- D. large increase in the entropy of the protein Discuss
- 5. A protein that binds two ligands in a non-cooperative manner will show
Options- A. a sigmodial binding curve
- B. a hyperbolic binding curve
- C. a linear Scatchard Plot
- D. both (b) and (c) Discuss
- 6. 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
- 7. An organism's first line of defense against attack by an invader such as a virus or bacterium is usually
Options- A. to flee or hide
- B. its body wall
- C. a specific immune response
- D. a nonspecific immune response Discuss
- 8. Antigenic determinants bind to which portions of an antibody?
Options- A. Variable regions
- B. Constant regions
- C. Only light chains
- D. Only heavy chains Discuss
- 9. The competitive immunoassay can be used
Options- A. to detect very small amounts of antigen
- B. to detect antibody associated with allergies (IgE)
- C. both (a) and (b)
- D. commonly to detect trace amounts of drugs. Discuss
- 10. Agarose gel electrophoresis and pulsed field gel electrophoresis may be used to resolve respectively
Options- A. 2000 kb and 20kb DNA
- B. 1000 kb and l0kb DNA
- C. 20 kb and 2000 kb DNA
- D. 10 kb and 1000 kb DNA Discuss
More questions
Correct Answer: 7
Correct Answer: Tryptophan, tyrosine, glutamine, asparagine
Correct Answer: Tryptophan
Correct Answer: large increase in the entropy of the protein
Correct Answer: both (b) and (c)
Correct Answer: both (a) and (b)
Correct Answer: its body wall
Correct Answer: Variable regions
Correct Answer: both (a) and (b)
Correct Answer: 20 kb and 2000 kb DNA
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