Question 1:

Gene expression refers to:

Explanation: Gene expression refers to the process of copying DNA into RNA (transcription) and synthesizing proteins from RNA (translation). Therefore, option C is correct.

Question 2:

The molecule that carries the genetic information from DNA to the ribosomes for protein synthesis is:

Explanation: The molecule that carries the genetic information from DNA to the ribosomes for protein synthesis is messenger RNA (mRNA). mRNA is synthesized during transcription and serves as a template for protein synthesis. Therefore, option A is correct.

Question 3:

Translation, the process of protein synthesis, occurs in the:

Explanation: Translation, the process of protein synthesis, occurs in the cytoplasm. Ribosomes, the cellular machinery responsible for protein synthesis, are located in the cytoplasm. Therefore, option B is correct.

Question 4:

The sequence of nucleotides in mRNA is determined by:

Explanation: The sequence of nucleotides in mRNA is determined by RNA polymerase. RNA polymerase synthesizes mRNA by following the complementary base pairing rules with the DNA template strand. Therefore, option B is correct.

Question 5:

Which of the following is involved in post-transcriptional modifications of mRNA?

Explanation: The spliceosome is involved in post-transcriptional modifications of mRNA. It removes introns and joins exons, resulting in the formation of mature mRNA. Therefore, option A is correct.