Why is only one strand of DNA transcribed into mRNA? a. Because mRNA is only req

Question

Why is only one strand of DNA transcribed into mRNA? a. Because mRNA is only required in small quantities b. Because the other strand would produce the same amino acid sequence in reverse order c. Because all genes are located on the same DNA strand, while the other strand acts as protection d. Because the other strand is transcribed directly into amino acids e. Because transcribing both DNA strands would produce different amino acid sequences tRNA molecules are able to act as adapters between amino acids and mRNA during translation because: a. tRNA binds to ribosomes. b. tRNA can bind to both mRNA and an amino acid. c. tRNA anticodons bind to amino acids. d. tRNA is recognized by RNA polymerase. e. tRNA molecules bind to promoter sequences to initiate transcription. One of the bases in a DNA molecule is adenine. True False

Explanation / Answer

Ans-43

During transcription only one strand of DNA is transcribed into mRNA because transcribing both strands would produce different amino acid sequences (or two different protein).

Ans-44

t-RNA act as a adaptor molecule between amino acid and mRNA because it can bind to both mRNA and amino acid. It binds amino acid at CCA-tail and anticodon sequence present in t-RNA forms hree base pairs with codon sequence present in mRNA.

Ans-

False- Adenine is a purine base not pyrimidine.

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