What is the name of the small circles of DNA that occur in bacteria in addition to the main circular chromosomal DNA molecule?

a. plasmids
b. plastids
c. transformants
d. plasmitrons


Answer: a. plasmids

Biology & Microbiology

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A) gains electrons and gains potential energy B) loses electrons and loses potential energy C) gains electrons and loses potential energy D) loses electrons and gains potential energy

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Which of the following reproduce by parthenogenesis?

A. bees B. some lizards C. some fish D. some frogs E. All of the choices are correct.

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The half-life of a molecule is the time it takes for 50% of the molecule to be broken down and recycled.

Answer the following statement true (T) or false (F)

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Which of the following statements is true of bacterial plasmids?

A. They are always found in the nucleoid. B. They can replicate autonomously. C. They carry genes for essential metabolic functions. D. They are small circular DNA molecules. E. They are small circular DNA molecules that can replicate autonomously.

Biology & Microbiology