The number and sequence of amino acids describe a protein's _____ structure.

A) primary
B) secondary
C) tertiary
D) quaternary
E) pentary


Answer: A) primary

Biology & Microbiology

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Why is life based on carbon-based molecules?

A. Because carbon has unique ionic properties B. Because a single carbon can bond with up to eight other atoms C. Because a single carbon can bond with up to four other atoms D. Because carbon is found everywhere

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Tissues on either sides of an apical meristem in a shoot develop into ____

a. flowers b. branches

c. lateral meristems d. leaves e. roots

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A laboratory technologist splashed a blood specimen onto his face, eyes, nose, and mouth. This specimen was from an HIV positive patient. If this blood exposure leads to HIV infection in the technologist, the transmission route is ________.

A. direct B. vehicle C. droplet nuclei D. fomite E. aerosol

Biology & Microbiology

How is a bacterial chromosome replicated?

a. The linear DNA molecule is replicated from multiple origins of replication bidirectionally. b. The linear DNA molecule is replicated from one origin of replication bidirectionally. c. The circular DNA molecule is replicated from multiple origins of replication bidirectionally. d. The circular DNA molecule is replicated from one origin of replication bidirectionally. e. The circular DNA molecule is replicated from one origin of replication unidirectionally.

Biology & Microbiology