LEVEL 3
Q1. The enzyme that unwinds the double helix of DNA in preparation for DNA replication is called
A. DNA Ligase
B. DNA Primase
C. DNA Polymerase
D. DNA Helicase
Q2. The open area of DNA where replication or transcription can take place is called
A. Replication bubble
B. Replication fork
C. Replication strand
D. Replication origin
Q3. The enzyme involved in DNA replication that joins individual nucleotides to produce a DNA molecule is called
A. DNA Ligase
B. DNA Primase
C. DNA Polymerase
D. DNA Helicase
Q4. Once the two strands of DNA are separated, what prevents them from assuming their double-helical shape?
A. Other proteins hold the strands apart
B. They are too far away from each other
C. Each strand has opposing charges, which keep them repelled
D. All of the above
Answer (2)
DNA replication involves several key enzymes such as DNA Helicase , which unwinds the double helix, and DNA Polymerase , which synthesizes the DNA strands. The Replication Bubble is where replication occurs, supported by proteins that keep the strands apart. This knowledge is essential for understanding the mechanisms of genetic replication. ;
The correct answers are: Q1 - D (DNA Helicase), Q2 - A (Replication Bubble), Q3 - C (DNA Polymerase), Q4 - A (Other proteins hold the strands apart). These components work together to ensure DNA is efficiently replicated in preparation for cell division.
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