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- Question
Which of the following is the best evidence for the lock and key theory of enzyme action?
Options- A. Compounds similar in structure to the substrate inhibit enzyme activity
- B. Enzymes are found in living organisms and speed up certain reactions
- C. Enzymes speed up reactions by definite amounts
- D. Enzymes determine the direction of a reaction
- Correct Answer
- Compounds similar in structure to the substrate inhibit enzyme activity
- 1. Which of the following is/are the sexual spore?
Options- A. Ascospores
- B. Basidiospores
- C. Both (a) and (b)
- D. None of these Discuss
- 2. Which disinfectant was the most effective against Salmonella"?
Options- A. Phenol
- B. Cetylpyridinium chloride
- C. Hexachlorophene
- D. Merthiolate Discuss
- 3. Which of the following organism is found at the initial stages in the batter of Idli?
Options- A. Leuconostoc mesentroides
- B. Aspergillus niger
- C. Bacillus natio
- D. None of these Discuss
- 4. Name the asexual spore(s)?
Options- A. Conidia
- B. Sporangiospore
- C. Arthospores
- D. All of these Discuss
- 5. Glucose can be broken down to pyruvate by
Options- A. Entner-Doudoroff pathway
- B. tricarboxylic acid cycle
- C. both (a) and (b)
- D. none of these Discuss
- 6. According to base pairing rules the bases of one strand match-up with the bases of the second strand of DNA and the two strands are said to be
Options- A. complementary
- B. oppositely charged
- C. identical
- D. none of these Discuss
- 7. Which of the following is correct?
Options- A. All T Cells are CD4+
- B. An epitope can have multiple antigens
- C. T Cell receptors are generated by random assortment of gene cassettes
- D. MHC Class II molecules are generated by random assortment of gene cassettes Discuss
- 8. Which of the following when used in proper concentration stimulates the Ascomycetes fermentation of vitamin B12 and can be used to counteract toxicity of iron in Candida species?
Options- A. Co
- B. Ni
- C. Zn
- D. Ca Discuss
- 9. __________is probably the most important characteristic for classification of viruses in eukaryotes.
Options- A. Host preference
- B. Morphology
- C. Physical nature of virion constituents
- D. Chemical nature of virion constituents Discuss
- 10. Molds causing spoilage of eggs include species of
Options- A. Cladosporium
- B. Mucor
- C. Thamnidium
- D. all of these Discuss
More questions
Correct Answer: Both (a) and (b)
Correct Answer: Merthiolate
Correct Answer: Leuconostoc mesentroides
Correct Answer: All of these
Correct Answer: Entner-Doudoroff pathway
Correct Answer: complementary
Correct Answer: T Cell receptors are generated by random assortment of gene cassettes
Correct Answer: Co
Correct Answer: Host preference
Correct Answer: all of these
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