NEETBotanyCell - The Unit of Life
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Ribosomes are known as ribonucleoprotein particles. Reason (R): They are composed of ribonucleic acid (RNA) and about 80 different proteins, and are not surrounded by any membrane. In the light of the above statements, choose the most appropriate answer from the options given below:
Options
- ABoth (A) and (R) are correct and (R) is the correct explanation of (A)
- BBoth (A) and (R) are correct but (R) is not the correct explanation of (A)
- C(A) is correct but (R) is not correct
- D(A) is not correct but (R) is correct
Correct answer
A. Both (A) and (R) are correct and (R) is the correct explanation of (A)
Step-by-step solution
Ribosomes are non-membrane bound organelles found in all cells. They are composed of ribonucleic acid (RNA) and about 80 different proteins. Because of this biochemical composition (RNA and proteins), they are referred to as ribonucleoprotein particles. Thus, both Assertion (A) and Reason (R) are correct, and (R) correctly explains (A) by providing the exact composition that justifies the term 'ribonucleoprotein'. Answer: Both (A) and (R) are correct and (R) is the correct explanation of (A)