Multiple choice

Directions: In the following question, there are two statements, Assertion (A) and Reason (R). Consider both the statements independently and mark your answer as

  1. if A and R both are correct and R is the correct explanation of A
  2. if A and R both are correct and R is not the correct explanation of A
  3. if A is correct and R is incorrect
  4. if A is incorrect and R is correct
  5. if A and R both are incorrect

Assertion (A): Human immunodeficiency virus is spherical with diameter of about 90-120 nm. Reason (R): Its genome consists of single-stranded DNA associated with reverse transcriptase enzyme.

  1. 1

  2. 2

  3. 3

  4. 4

  5. 5
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A is correct whereas R is incorrect. Human immunodeficiency virus (HIV) is spherical with diameter of about 90-120 nm. 

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