Topics: DNA Replication Quiz
The enzyme that unzips the DNA to prepare for replication
A. helicase
B. replicase
C. polymerase
D. synthase
Select your answer:

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Excretory System › ViewAll of the following substances are reabsorbed by active mechanism by renal tubule EXCEPT
A. Glucose
B. Amino acids
C. Na+
D. Nitrogenous wastes
Microbiology › View
This organelle is the rigid protective structure and support in the plant cell.
A. cell wall
B. cell membrane
C. cytoplasm
D. vacuole