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- Question
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
- Correct Answer
- the products of the reaction move in a specific direction
- 1. In one iron-metalloflavoprotein, the iron is present as a
Options- A. heme-protein
- B. nonheme type
- C. both (a) and (b)
- D. flavin moiety Discuss
- 2. What modified base is at the 5' extremity of a capped eukaryotic m-RNA?
Options- A. 1-methyl-adenosine
- B. 2'-O-methyl-guanosine
- C. 7-methyl-guanosine
- D. 1-methyl-guanosine Discuss
- 3. Which of the following can be diagnosed by amniocentesis?
Options- A. Down's syndrome
- B. Cystic Fibrosis
- C. Sickle cell anemia
- D. All of these Discuss
- 4. Vitamin B12 (Cobalamin) is only synthesized by
Options- A. fishes
- B. micro-organisms
- C. plants
- D. animals Discuss
- 5. In animals, blood clots serve the function of
Options- A. consuming invading organisms
- B. helping them match the background coloration of the habitat
- C. stimulating production of killer T lymphocytes
- D. repairing damage to the body wall Discuss
- 6. During catabolism, only about 40% of the energy available from oxidizing glucose is used to synthesize ATP. Remaining 60%
Options- A. is lost as heat
- B. is used to reduce NADP
- C. remains in the products of metabolism
- D. is stored as fat. Discuss
- 7. The GC trace obtained after an experiment is called a
Options- A. chromatograph
- B. chromatogram
- C. chromatophore
- D. graph Discuss
- 8. The transfer of antibiotic-resistant genes from genetically engineered bacteria to disease-causing bacteria __________ .
Options- A. would be of no concern if it occurred.
- B. has occurred
- C. can never occur
- D. seems unlikely Discuss
- 9. In prokaryotes, transcription is
Options- A. terminated by the stop codon
- B. terminated by a protein called rho
- C. terminated by a poly A sequence
- D. terminated by a start codon Discuss
- 10. UV-Vis spectroscopy of organic compounds is usually concerned with which electronic transition(s)?
Options- A. ? ? ?*
- B. n ? ?*
- C. n ? ?* and ? ? ?*
- D. none of these Discuss
More questions
Correct Answer: heme-protein
Correct Answer: 7-methyl-guanosine
Correct Answer: All of these
Correct Answer: micro-organisms
Correct Answer: repairing damage to the body wall
Correct Answer: is lost as heat
Correct Answer: chromatogram
Correct Answer: seems unlikely
Correct Answer: terminated by a protein called rho
Correct Answer: n ? ?* and ? ? ?*
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