In prokaryotes, most of the control of gene
expression is at the __________ level.
a. transcriptional
b. transcript processing
c. transport
d. translational
e. post-translational
Answer: a
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The preferred habitat of S. aureus is the
A. throat. B. urethra. C. bladder. D. nasal chamber.
Which of the following extend as a bundle from the base to the tip of a flagellum or cilium?
a. microfilaments b. intermediate filaments c. actins d. microtubules
The MAIN components of a cell membrane are
A. phospholipids and proteins. B. steroids and carbohydrates. C. nucleic acids and simple sugars. D. proteins and steroids.
During recombination ________________________
(a) sister chromatids undergo crossing-over with each other. (b) chiasmata hold chromosomes together. (c) one crossover event occurs for each pair of human chromosomes. (d) the synaptonemal complex keeps the sister chromatids together until anaphase II.