Activation energy is necessary for all ________ reactions
A) endergonic B) coupled C) chemical D) exergonic
C
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What enzyme catalyzes the attachment of amino acids to tRNA molecules?
A. helicase B. topoisomerase C. aminoacyl-tRNA synthetase D. ribosome E. translation factor
What site on a bacterial operon segment of a chromosome is adjacent to or overlaps with a promoter?
a) repressor b) structural genes c) operator d) activator e) terminator
Members of the ________ are Gram-positive bacteria that have a distinctive process for cell separation known as "snapping division."
A. Actinomycetes B. Clostridium C. Corynebacterium D. Mycoplasma E. Rhizobium
In addition to being light and abundant, the capacity of the carbon atom to form _____ bond(s) makes it critical for the chemistry of life.
A) 1 B) 2 C) 3 D) 4