Which of these provides evidence of the common ancestry of all life?

A) near universality of the genetic code
B) structure of the nucleus
C) structure of cilia
D) structure of chloroplasts


A

Biology & Microbiology

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The metabolic process of denitrification

A) oxidizes N2. B) oxidizes NO3-. C) reduces N2. D) reduces NO3-.

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What is the greatest risk factor for cancer?

a. family history b. age c. environmental toxins d. diet e. physical inactivity

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What is the key concept addressed by the question?

What will be an ideal response?

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________ can initiate chromosome transfer from one E. coli to another

A) An F+ cell B) An Hfr cell C) An F? cell D) A plasmid E) A temperate phage

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