Nonsense suppressors are usually mutations in genes coding for

A) proteins.
B) enzymes.
C) mRNA.
D) tRNA.
E) rRNA.


D

Biology & Microbiology

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According to the original central dogma, what macromolecule or phenomenon is directly responsible for an organism's phenotype?

A. DNA B. mutation C. transcription D. RNA E. protein

Biology & Microbiology

Ferns possess all of the following EXCEPT:

a. cuticles. b. embryos. c. seeds. d. roots. e. leaves.

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Which is not true of phototrophs?

A) They capture light energy. B) They can be bacteria. C) They store energy as glucose. D) They never function as autotrophs. E) They provide energy for chemotrophs.

Biology & Microbiology

Mycorrhizae are

A) commensal relationships between a fungus and the leaves of a land plant. B) symbiotic relationships between a fungus and the roots of a land plant. C) mutualistic relationships between a fungus and an alga. D) parasitic relationships between bacteria and the roots of a land plant. E) symbiotic relationships between bacteria and the roots of a land plant.

Biology & Microbiology