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Question

According to current ideas concerning protein synthesis:
  1. Transfer RNA molecules specific for particular amino acids are synthesized along a messenger RNA template in the cytoplasm.
  2. Amino acids line up with their mRNA codons on the ribosomes and are then linked together by transfer RNA.
  3. Enzymes that catalyze protein-synthesizing reactions in the cytoplasm are transcribed from activator genes.
  4. Messenger RNA, synthesized on a DNA template in the nucleus, provides information that determines the sequence in which amino acids will be linked during translation.


Solution

The correct option is D Messenger RNA, synthesized on a DNA template in the nucleus, provides information that determines the sequence in which amino acids will be linked during translation.
DNA codes for mRNA in the nucleus, and the mRNA translates to produce protein molecules in ribosomes.

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