Which enzyme adds new nucleotides to the end of a growing strand?

A. gyrase
B. polymerase
C. helicase
D. endonuclease
E. ligase


Answer: B

Biology & Microbiology

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Metabolomics is based on the premise that ____

a. plant mitochondria are unique to harnessing ATP to develop alternative energy sources b. plant chloroplasts are unique to harnessing light for energy c. harnessing the 200,000 to 1 million different chemicals produced by plant metabolism for human needs is increasingly important d. plant metabolism is difficult to manipulate e. plant metabolism is simple to manipulate

Biology & Microbiology

A polysome is

a. the combination of a large and a small ribosome subunit. b. the complex where mRNA splicing occurs. c. the assembly at a promoter at the start of transcription. d. an mRNA with multiple ribosomes attached. e. the complex that puts a poly(A) tail on an mRNA.

Biology & Microbiology

A hydrostatic skeleton consists of _____

a. a fluid in an enclosed space b. hardened plates at the surface of a body c. internal hard parts d. none of these

Biology & Microbiology

Why do the veins of the legs require valves in order to function?

What will be an ideal response?

Biology & Microbiology