Civil Services Prep

Prelims 2012 · Science and Technology · Question 16

With reference to 'stem cells', frequently in the news, which of the following statements is/are correct?

  1. Stem cells can be derived from mammals only.
  2. Stem cells can be used for screening new drugs.
  3. Stem cells can be used for medical therapies.

Select the correct answer using the codes given below:

  1. 1 and 2 only
  2. 2 and 3 only
  3. 3 only
  4. 1, 2 and 3

Answer

2 and 3 only

1. Stem cells can be derived from mammals only. — Incorrect
Stem cells are not exclusive to mammals; they are also found in other organisms, including plants and some non-mammalian animals.

2. Stem cells can be used for screening new drugs. — Correct
Stem cell-based models are widely used to test drug safety, efficacy, and toxicity in research.

3. Stem cells can be used for medical therapies. — Correct
Stem cells are used in regenerative medicine and therapies such as bone marrow transplantation.

Therefore, statements 2 and 3 only are correct.

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