An episome is

A. a plasmid that can make bacterial cells resistant to antibiotics.
B. a plasmid that gives bacteria the ability to degrade toluene.
C. a plasmid that can exist either autonomously in the cytoplasm or as part of a chromosome.
D. a plasmid that can turn a bacteria that is harmless into a strain that can cause disease.
E. a plasmid that gives bacteria the ability to exchange DNA with another bacterial cell.


C. a plasmid that can exist either autonomously in the cytoplasm or as part of a chromosome.

Biology & Microbiology

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The process of removing introns from mRNA and putting the remaining exons together occurs in a complex called the ____.

a. ribosome b. anticodon c. lariat d. polysome e. spliceosome

Biology & Microbiology

Which of the following is (are) NOT true concerning

glandular epithelium? a. Gland cells occur in it. b. It is found in locations other than glands. c. It secretes products unrelated to its own metabolism. d. Its products are distributed only locally. e. All of these are NOT true.

Biology & Microbiology

Which organisms may be a keystone species in a tropical rain forest?

a. gray wolves b. fruit-eating bats c. poison arrow frogs d. fig trees e. fruit-eating monkeys

Biology & Microbiology

The energy of wavelengths that appear ________ is LEAST useful to photosynthesis

A) red B) green C) blue D) orange

Biology & Microbiology