Discussion
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- Question
In eukaryotes, electron transport occurs in
Options- A. membranes and mitochondria
- B. endoplasmic reticulum
- C. cytoplasm
- D. all of the above
- Correct Answer
- membranes and mitochondria
- 1. DNA polymerases I also has
Options- A. 5'-3' exonuclease activity
- B. 3'-5'exonuclease activity
- C. both (a) and (b)
- D. 5'-3' endonuclease activity Discuss
- 2. The B-DNA structure found in solution is a
Options- A. left-handed double helix of antiparallel chains (10 bp/turn)
- B. right-handed double helix of antiparallel chains (?10 bp/turn)
- C. left-handed zig-zag helix of antiparallel chains (10 bp/turn)
- D. right-handed double helix of parallel chains (?10 bp/turn) Discuss
- 3. SH2 domains specifically bind to
Options- A. phosphorylated serine residues
- B. phosphorylated tyrosine residues
- C. GDP
- D. Ca2+ Discuss
- 4. The transcriptional regulatory proteins in eukaryotes which induce transcription usually have
Options- A. at least two distinct domains of protein structure, a DNA binding domain and an activation domain
- B. at least two distinct domains of protein structure and a DNA binding domain
- C. at least one distinct domains of protein structure, a DNA binding domain and an activation domain
- D. none of these Discuss
- 5. Which of the following compounds/(s) belong/(s) to the vitamin B6 group?
Options- A. Pyridoxal
- B. Pyridoxine
- C. Pyridoxamine
- D. All of these Discuss
- 6. In the signal transduction mechanism known as protein phosphorylation
Options- A. the signaling molecule binds to a surface receptor
- B. receptor kinases play a key role in triggering the signal cascade
- C. phosphorylated proteins act with enzymes to trigger the signal cascade
- D. All of the above Discuss
- 7. Which of the following is a positively charged matrix for ion exchange chromatography?
Options- A. CM cellulose
- B. DEAE cellulose
- C. Phosphocellulose
- D. None of these Discuss
- 8. The RNA primers used to initiate replication in E. coli
Options- A. result in Okazaki fragments on leading strand
- B. are removed by Pol I
- C. are joined together by DNA ligase
- D. are removed by helicase + ATP Discuss
- 9. The mRNA from which of the following would contain a poly-A tail?
Options- A. A restriction endonuclease from E. coli
- B. Bacterial alpha-amylase
- C. Human insulin
- D. Bacteriophage DNA ligase Discuss
- 10. Thin layer chromatography is
Options- A. partition chromatography
- B. electrical mobility of ionic species
- C. adsorption chromatography
- D. none of the above Discuss
More questions
Correct Answer: 3'-5'exonuclease activity
Correct Answer: right-handed double helix of antiparallel chains (?10 bp/turn)
Correct Answer: phosphorylated tyrosine residues
Correct Answer: at least two distinct domains of protein structure, a DNA binding domain and an activation domain
Correct Answer: All of these
Correct Answer: All of the above
Correct Answer: DEAE cellulose
Correct Answer: are removed by Pol I
Correct Answer: Human insulin
Correct Answer: adsorption chromatography
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