When RNA-dependent RNA polymerase is synthesizing mRNA it is functioning as a ________.

A. helicase
B. replicase
C. transcriptase
D. ligase


Answer: C

Biology & Microbiology

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The components of a chromosome include one long DNA molecule and

A) phospholipids. B) proteins. C) carbohydrates. D) steroids. E) chromophores.

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Animals in the largest phylum are _____

1.bilateral protostomes 2.unsegmented with a pseudocoel 3.jointed with an exoskeleton 4.segmented with circulatory and digestive systems in all chambers of the coelom

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The photoreceptors of the eye are located in the

A. retina. B. sclera. C. organ of Corti. D. choroid layer. E. optic nerve.

Biology & Microbiology

Programmed cell death is called ____.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology