What type of enzyme fills in the gap after damaged DNA has been removed?

A. primase
B. polymerase
C. helicase
D. ligase
E. nuclease


Answer: B. polymerase

Biology & Microbiology

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In the picture below, what is encircled?

A. A single chromosome B. A pair of homologous chromosomes C. Two sister chromatids D. A sister chromatid

Biology & Microbiology

All EXCEPT which of the following must be

available for the light-independent reactions to occur? a. carbon dioxide b. oxygen c. ribulose bisphosphate d. ATP and NADPH e. enzymes

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How does the lactose repressor block transcription of the lactose operon?

a. By "turning off" the lacA intron b. By degrading the lacZ protein product c. By binding allosterically to the lacZ gene d. By slowing the uptake of lactose into the cell e. By binding to the operator

Biology & Microbiology

A ________ forms when an acellular slime mold is exposed to dry conditions or starvation

A) fruiting body B) water mold C) cellular slime mold D) plasmodium

Biology & Microbiology