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- Question
The mitochondria were known in the nineteenth century to be osmotically active on the basis of evidence that
Options- A. the mitochondrial matrix is hypotonic to the cellular cytoplasm
- B. the mitochondrial matrix is hypertonic to the cellular cytoplasm
- C. mitochondria were derived from a symbiotic bacterium
- D. mitochondria are surrounded by a semi permeable membrane
- Correct Answer
- mitochondria are surrounded by a semi permeable membrane
- 1. Why do some redox reactions in cells result in the transfer of electrons from a reductant with a higher standard redox potential to an oxidant with a lower standard redox potential?
Options- A. Redox potentials are defined under standard conditions, and cellular conditions are typically not standard conditions
- B. The rules governing oxidation and reduction apply only in vitro, and not in vivo
- C. Electrons always go from reductants with high redox potentials to oxidants with low redox potentials
- D. None of the above Discuss
- 2. Which of the following statements is false?
Options- A. Continuous variation produces a spread of variation within a population
- B. Discontinuous variation is the result of genetics alone
- C. Blood group is an example of discontinuous variation
- D. Discontinuous variation is influenced by the environment Discuss
- 3. The intervention in the communication system of nematodes offer several possibilities of bio control. Which of the following(s) play(s) a very important role in the host recognition?
Options- A. Protein
- B. Lipid
- C. Carbohydrate moiety
- D. Minerals Discuss
- 4. Which of the following changes occur during first phase of growth of Penicillium chrysogenum?
Options- A. Growth of mycelia occurs
- B. Ammonia is liberated in the medium
- C. Lactic acid present in the corn steep liquor is utilized at the maximum rate
- D. All of the above Discuss
- 5. Bruise resistant tomatoes have been developed by the expression of antisense RNA against
Options- A. glycerol 1 phosphate acyl transferase
- B. polygalactouranase
- C. ACC deaminase
- D. Sucrose phosphate synthase gene Discuss
- 6. In transgenic plants that have been manipulated to express patho-genesis-related (PR) proteins all the time it has been shown that
Options- A. these provide no protection at all against pathogens
- B. expression of one PR protein provides high levels of protection against many pathogens
- C. expression of two PR proteins provides some protection against a few pathogens
- D. these proteins trigger the production of other antimicrobial defenses Discuss
- 7. Which of the following mutant/(s) has/have increased amount of lysine and/or methionine in corn seeds?
Options- A. Opaque-2
- B. Sugary-1
- C. Flory-2
- D. All of these Discuss
- 8. Gypsum is beneficial for
Options- A. phosphorus enriched soil
- B. water logged soil
- C. alkaline soil
- D. saline soil Discuss
- 9. What is the desirable sugar content of the grapes required for the wine production?
Options- A. 2-5%
- B. 5-10%
- C. 10-14%
- D. 14-20% Discuss
- 10. Alegar is a type of vinegar produced from
Options- A. fruit juices
- B. malted grain
- C. ethanol
- D. ale Discuss
More questions
Correct Answer: Redox potentials are defined under standard conditions, and cellular conditions are typically not standard conditions
Correct Answer: Discontinuous variation is influenced by the environment
Correct Answer: Carbohydrate moiety
Correct Answer: All of the above
Correct Answer: polygalactouranase
Correct Answer: these proteins trigger the production of other antimicrobial defenses
Correct Answer: All of these
Correct Answer: alkaline soil
Correct Answer: 14-20%
Correct Answer: ale
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