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- Question
Translation in prokaryotes begins by the formation of a 30S initiation complex between the
Options- A. 30S ribosomal subunit, mRNA, initiation factors and N-fMet tRNA
- B. 30S ribosomal subunit, tRNA and initiation factors
- C. 30S ribosomal subunit and mRNA only
- D. 30S ribosomal subunit, mRNA and initiation factors
- Correct Answer
- 30S ribosomal subunit, mRNA, initiation factors and N-fMet tRNA
- 1. 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
- 2. 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
- 3. Different form of a plasmid, on an agarose gel, after electrophoresis may be in which of the following sequence in decreasing molecular weight?
Options- A. Open circular, super coiled, linear plasmid DNA
- B. Linear plasmid, open circular, super coiled plasmid
- C. Open circular, super coiled, linear plasmid DNA
- D. Open circular, linear plasmid, super coiled plasmid Discuss
- 4. The glycosidic bonds in DNA and RNA
Options- A. connect the sugar to the base
- B. can be hydrolyzed by OH- ion
- C. stabilize Watson-Crick H-bonds
- D. are free to rotate over about 180° Discuss
- 5. The membrane proteins that catalyze active transport reactions differ from soluble enzymes as
Options- A. they are permanently changed during the reaction
- B. the substrates of the reaction are all outside the cell
- C. they do not enhance the rates of reaction
- D. the products of the reaction move in a specific direction Discuss
- 6. Peptidoglycan is a complex consisting of
Options- A. oligo-saccharide and protein
- B. polysaccharide and protein
- C. mono-saccharide and protein
- D. aminoacid and carbohydrate Discuss
- 7. Thymidine
Options- A. can participate in hydrophobic interactions due to its methyl group
- B. is replaced by uracil in RNA
- C. normally forms two hydrogen bonds with adenosine
- D. all of the above Discuss
- 8. Which of the following is correct?
Options- A. Peroxisomes have a single boundary membrane
- B. Peroxisomes contain enzymes that degrade fatty acids and amino acids
- C. The byproduct of given reactions in (b) is toxic to cells
- D. All of the above Discuss
- 9. In Fluid mosaic model, the biological membrane can be viewed as
Options- A. two dimensional solutions of oriented lipids and globular proteins
- B. three dimensional solutions of oriented lipids and globular proteins
- C. two dimensional solutions of oriented lipids and carbohydrate
- D. three dimensional solutions of oriented lipids and carbohydrate Discuss
- 10. Which of the following has been used as an evidence that primitive life forms lacked both DNA and enzymes?
Options- A. RNA can both code genetic information and act as a catalyst
- B. DNA and enzymes are only present in the most advanced cells
- C. Advanced cells lack RNA
- D. All of the above Discuss
More questions
Correct Answer: both (a) and (b)
Correct Answer: 20 kb and 2000 kb DNA
Correct Answer: Linear plasmid, open circular, super coiled plasmid
Correct Answer: connect the sugar to the base
Correct Answer: the products of the reaction move in a specific direction
Correct Answer: oligo-saccharide and protein
Correct Answer: all of the above
Correct Answer: All of the above
Correct Answer: two dimensional solutions of oriented lipids and globular proteins
Correct Answer: RNA can both code genetic information and act as a catalyst
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