During DNA replication
A - VCE - SSCE Biology - Question 9 - 2003 - Paper 1
Question 9
During DNA replication
A. messenger RNA (mRNA) is produced.
B. reverse transcriptase enzymes play an important role.
C. bonds between phosphate and sugar molecules b... show full transcript
Worked Solution & Example Answer:During DNA replication
A - VCE - SSCE Biology - Question 9 - 2003 - Paper 1
Step 1
A. messenger RNA (mRNA) is produced.
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Answer
This statement is incorrect as messenger RNA (mRNA) is produced during the process of transcription, not DNA replication. During DNA replication, the main focus is on the duplication of the DNA itself.
Step 2
B. reverse transcriptase enzymes play an important role.
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Answer
This statement is incorrect. Reverse transcriptase is an enzyme associated with retroviruses and is involved in the synthesis of DNA from RNA. It is not involved in the normal DNA replication process.
Step 3
C. bonds between phosphate and sugar molecules break.
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Answer
This statement is misleading. During DNA replication, the hydrogen bonds between the complementary base pairs are broken to separate the two strands of DNA. The bonds between the phosphate and sugar molecules do not break; instead, new nucleotides are added to the growing DNA strand.
Step 4
D. each of the DNA strands acts as a template strand.
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Answer
This statement is correct. During DNA replication, each of the two original DNA strands serves as a template for the synthesis of a new complementary strand, ensuring that the genetic information is accurately copied.
