Which of the following statements is/are correct

  1. Viruses lack enzymes necessary for the generation of energy.
  2. Viruses can be cultured in any synthetic medium.
  3. Viruses are transmitted from one organism to another by biological vectors only.

Select the correct answer using the codes given below.

[UPSC Civil Services Exam – 2013 Prelims]

(a) 1 only

(b) 2 and 3 only

(c) 1 and 3 only

(d) 1, 2 and 3


Answer: (a)        

Explanation:

  • Viruses have no metabolic enzymes and cannot generate their own energy. Hence 1 statement is correct.
  • Viruses require a growth medium containing living cells, therefore, cannot be cultured in any synthetic medium. Hence 2 statement is incorrect.
  • Viruses are transmitted from one organism to another not only by biological vectors but also by mechanical vectors. Hence 3 statement is incorrect.

Consider the following statements:                                                                   The Parliament of India can place a particular law in the Ninth Schedule of the Constitution of India. The validity of a law placed in the Ninth Schedule cannot be examined by any court and no judgement can be made on it. Which of the statements given above is/are correct?

Consider the following statements:                                               

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Consider the following statements:                                                         The Parliament of India can place a particular law in the Ninth Schedule of the Constitution of India. The validity of a law placed in the Ninth Schedule cannot be examined by any court and no judgement can be made on it. Which of the statements given above is/are correct?

Consider the following statements:                                               

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