(a) Which of the following statements is TRUE?     DNA polymerase moves in a 5 to 3 direction in proofreading and correcting synthesized DNA.     RNA polymerase moves in a 5 to 3 direction in synthesizing mRNA.     Ribosome moves in a 3 to 5 direction during translation.     tRNA moves in a 3 to 5 direction during translation. (b) "In this mutation, most amino acids are replaced due to a deletion of a nucleotide base."     missense mutation     nonsense mutation     silent mutation     frameshift mutation

Biochemistry
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Chapter1: Biochemistry: An Evolving Science
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1. (a) Which of the following statements is TRUE?
   
DNA polymerase moves in a 5 to 3 direction in proofreading and correcting synthesized DNA.
   
RNA polymerase moves in a 5 to 3 direction in synthesizing mRNA.
   
Ribosome moves in a 3 to 5 direction during translation.
   
tRNA moves in a 3 to 5 direction during translation.

(b) "In this mutation, most amino acids are replaced due to a deletion of a nucleotide base."

   
missense mutation
   
nonsense mutation
   
silent mutation
   
frameshift mutation
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