BIOLOGY
STRUCTURE OF PROTEINS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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UUGACUU
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TTGACTT
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AACTGAA
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AACUGAA
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Detailed explanation-1: -The upper strand of DNA is the “mRNA-like” strand. The lower strand is the strand that is complementary to the mRNA.
Detailed explanation-2: -Answer and Explanation: If a DNA strand has the sequence 5’-ATG-3’, the complementary messenger RNA (mRNA) sequence made using this DNA template would have the sequence 3’-UAC-5’.
Detailed explanation-3: -Recall that adenine nucleotides pair with thymine nucleotides, and cytosine with guanine. This means that the two strands are complementary to each other. For example, a strand of DNA with a nucleotide sequence of AGTCATGA will have a complementary strand with the sequence TCAGTACT (Figure 9.8).
Detailed explanation-4: -The preferential binding of bases A to T (or U) and C to G in DNA or RNA. For example, if there is a GTC on the DNA strand, the complementary RNA or DNA sequence will be CAG. This complementarity maintains the double helical structure of DNA.