Translational controls of protein levels in bacteria are governed by:
a. the rate at which small and large subunits of ribosomes assemble.
b. the rate at which the cap and tail of pre mRNA are removed.
c. the rate at which ribosomes attach to mRNA molecules.
d. the concentration of proteins in the cytoplasm.
e. the rate at which sugars are incorporated into the cell.
C
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A microbiologist Gram stains a bacterium and finds the bacterium to be blue to purple in color. This identifies the
A. bacterium as gram-positive. B. bacterium as a disease-causing organism. C. bacterium as an endospore former. D. species of bacterium. E. bacterium as gram-negative.
The redox carriers of the electron transport system that have a tightly bound metal atom responsible for accepting and donating electrons are ________.
A. the cytochromes B. NADP molecules C. FAD molecules D. the flavoproteins E. NAD molecules
The process by which chromosomes fail to
separate during meiosis is called
a. aneuploidy. b. trisomy. c. monosomy. d. nondisjunction. e. polyploidy
In a forest, trees that get more sunlight grow taller than other nearby trees. This is a form of ________
A. artificial selection. B. stabilizing selection. C. disruptive selection. D. directional selection. E. natural selection.