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- Question
Because DNA is a highly charged polyanion, its stability to heat denaturation
Options- A. does not depend on hydrophobic interactions
- B. increases with increasing salt
- C. is independent of G - C content
- D. decreases with increasing salt
- Correct Answer
- increases with increasing salt
- 1. Selenium is an essential component of the enzyme glutathione peroxidase which
Options- A. scavenges toxic hydoperoxycompounds in tissues
- B. reduces toxic hydoperoxycompounds in tissues
- C. oxidizes toxic hydoperoxycompounds in tissues
- D. none of the above Discuss
- 2. Which of the following is not a structural motif in DNA binding proteins?
Options- A. bZIP
- B. helix-turn-helix
- C. TFIID
- D. zinc finger Discuss
- 3. Buffer solutions
Options- A. will always have a pH of 7
- B. are rarely found in living systems
- C. cause a decrease in pH when acids are added to them.
- D. tend to maintain a relatively constant pH. Discuss
- 4. Messelsen and Stahl model of replication was called
Options- A. conservative replication
- B. semi-conservative replication
- C. dispersive replication
- D. Cri du Chat Discuss
- 5. Which of the following is a nonstandard amino acid?
Options- A. Cysteine
- B. Isoleucine
- C. Hydroxyproline
- D. Histidine Discuss
- 6. The ultimate source of energy that sustains living systems is
Options- A. glucose
- B. oxygen
- C. sunlight
- D. carbon dioxide Discuss
- 7. Ribosomes select the correct tRNAs
Options- A. then bind to the appropriate mRNA
- B. solely on the basis of their anticodons
- C. depending on their abundance in the cytosol
- D. with the least abundant anticodons Discuss
- 8. Models of end-linked Osaka VI Fibrinogen dimers, a bilayer dimer is linked at
Options- A. both ends by one disulfide bond
- B. either end via two disulfide bonds
- C. either end via a single disulfide bond
- D. both ends by two disulfide bonds Discuss
- 9. Which of the following amino acid is known as half-cystine residue?
Options- A. Cysteine
- B. Isoleucine
- C. Valine
- D. Histidine Discuss
- 10. The nucleons of eukaryotic cell has
Options- A. RNA polymerase I
- B. RNA polymerase II
- C. RNA polymerase III
- D. all of these Discuss
More questions
Correct Answer: scavenges toxic hydoperoxycompounds in tissues
Correct Answer: TFIID
Correct Answer: tend to maintain a relatively constant pH.
Correct Answer: semi-conservative replication
Correct Answer: Hydroxyproline
Correct Answer: sunlight
Correct Answer: solely on the basis of their anticodons
Correct Answer: both ends by two disulfide bonds
Correct Answer: Cysteine
Correct Answer: all of these
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