Question

Assertion: Replication and transcription occur in the nucleus but translation occurs in the cytoplasm.

Reason: mRNA is transferred from the nucleus into the cytoplasm where ribosomes and amino acids are available for protein synthesis.

(a) Both A and R are true and R is the correct explanation of A.

(b) Both A and R are true but R is not correct explanation of A

(c) A is true but R is false

(d) A and R are false

Answer 1

Correct option(a) 

Explanation:

DNA replication is the process of forming carbon copy of DNA whereas transcription is the formation of RNA from DNA template. DNA replication and transcription takes place in the nucleus as the required maternal DNA and RNA are present in the nucleus. During transcription, nRNA takes the coded information from DNA to the cytoplasm where translation takes place. Translation is the process of protein synthesis. It is separated from transcription in both space and time. It prevents the intermixing of raw materials. protect DNA from respiratory enzymes and ribosomal machinery from nuclease.