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- Question
In immunofluroscence microscopy, fluroscent compounds are attached to
Options- A. an antibody specific for the subcellular structure
- B. an antigen specific for the subcellular structure
- C. bound antibody specific for the subcellular structure
- D. none of these
- Correct Answer
- an antibody specific for the subcellular structure
- 1. In cellular immunity, T lymphocytes are responsible for the recognition and killing of foreign invaders. The cells are
Options- A. cytotoxic T lymphocytes (CTL)
- B. killer T cells
- C. both (a) and (b)
- D. none of the above Discuss
- 2. Which of following RNA characteristically contains unusual purines and pyrimidmes?
Options- A. rRNA
- B. nRNA
- C. mRNA
- D. tRNA Discuss
- 3. Selenium deficiency leads to
Options- A. liver necrosis
- B. diarrhea
- C. multiple sclerosis
- D. Crohn's disease Discuss
- 4. Peptides in the fully extended chain conformation
Options- A. have Y = F = 180°
- B. do not occur in nature
- C. also have a cis geometry in their peptide bonds
- D. are equivalent to the (3-sheet structure Discuss
- 5. The binding of ligands to many G-proteins linked receptors leads to shortlived
Options- A. increase in the concentration of certain intracellular signaling molecules called second messenger
- B. decrease in the concentration of certain intracellular signaling molecules called second messenger
- C. increase in the concentration of certain extracellular signaling molecules called first messenger
- D. decrease in the concentration of certain extracellular signaling molecules called first messenger Discuss
- 6. What is the approximate size (in kb) of the E. coli genome?
Options- A. 3000 kilobase
- B. 4500 kilobase
- C. 5500 kilobase
- D. 6500 kilobase Discuss
- 7. The nucleosome consists of histone
Options- A. octamer and 146 bp of DNA
- B. tetramer and 146 bp of DNA
- C. hexamer and 146 bp of DNA
- D. none of the above Discuss
- 8. The oxygen in hemoglobin and myoglobin is bound to
Options- A. the iron atom in the heme group
- B. the nitrogen atoms on the heme
- C. histidine residues in the protein
- D. lysine residues in the protein Discuss
- 9. Humans are unable to digest
Options- A. starch
- B. complex carbohydrates
- C. denatured proteins
- D. cellulose Discuss
- 10. A catabolic intermediate which stimulates phosphofructokinase would stimulate
Options- A. gluconeogenesis
- B. glycolysis
- C. glycogen synthesis
- D. none of these Discuss
More questions
Correct Answer: both (a) and (b)
Correct Answer: tRNA
Correct Answer: liver necrosis
Correct Answer: have Y = F = 180°
Correct Answer: increase in the concentration of certain intracellular signaling molecules called second messenger
Correct Answer: 4500 kilobase
Correct Answer: octamer and 146 bp of DNA
Correct Answer: the iron atom in the heme group
Correct Answer: cellulose
Correct Answer: glycolysis
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