What enzyme catalyzes the attachment of amino acids to tRNA molecules?

A. aminoacyl-tRNA synthetase
B. helicase
C. translation factor
D. topoisomerase
E. ribosome


Answer: A

Biology & Microbiology

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Which process takes place in the cytoplasm?

a. DNA replication b. transcription c. duplication d. translation e. transition

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Vessel elements differ from tracheids differ in that vessel elements contain pits

____________________ Indicate whether the statement is true or false.

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Which statement is false concerning carbohydrate fermentation media?

A. Positive carb fermentation is indicated by acid production B. Gas production occurs when a bubble forms in the inner tube C. Negative carb fermentation is indicated by acid production D. They can distinguish both carb fermentation and gas production

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Which of the following are inorganic molecules that bind to enzymes?

A) apoenzymes B) coenzymes C) cofactors D) holoenzymes

Biology & Microbiology