Which enzymes perform proofreading during DNA replication?

a. DNA ligase
b. DNA polymerase
c. primase
d. telomerase


Ans: b. DNA polymerase

Biology & Microbiology

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If the energy of the sun no longer reached Earth, the primary productivity of which of the following ecosystems would be least affected?  

A.  deep sea hydrothermal vent B.  temperate rain forest C.  desert D.  taiga E.  coral reef

Biology & Microbiology

__________ are short sections of underground stem

encased by overlapping layers of thickened, modified leaves called scales. a. Stolons b. Rhizomes c. Bulbs d. Corms e. Tubers

Biology & Microbiology

Baroreceptors are used for regulation of

a. blood cell production. b. blood pressure. c. coronary artery flow. d. blood flow to the digestive tract. e. blood flow to the kidneys.

Biology & Microbiology

Genes for different traits located on the same chromosome in close proximity are called ________ genes

Fill in the blank(s) with correct word

Biology & Microbiology