The step of translation in which an mRNA, a small ribosomal subunit, and tRNA carrying methionine, are aligned together is





A. termination.

B. elongation.

C. initiation.

D. transcription.

E. mitosis.




C. initiation.

Biology & Microbiology

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While standard two-component regulatory systems typically act to control gene transcription, phosphorelay systems can act either to control gene transcription or to control            .

A. DNA replication B. translation C. protein activity D. All of the choices are correct.

Biology & Microbiology

Describe 3 anatomical features that distinguish a bivalve from the phylum Mollusca from a brachiopod

What will be an ideal response?

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Which feature is believed to have been the first step in the evolution of land plants from the green algae?

A. evolution of vascular tissue B. evolution of seeds C. evolution of flowers in order to attract pollinators D. protection of the embryo E. evolution of microphylls

Biology & Microbiology

What is the ecological significance of shallow bays and coastal wetlands such as estuaries and salt marshes?

A) Coral reefs occur in these areas. B) They are an important source of crude oil. C) They serve as the habitat for many endangered species. D) They are the breeding grounds for a wide variety of sea-dwelling animals. E) They are safe from most human impact because humans do not live there.

Biology & Microbiology