A bacterial genome is typically
A) a single linear piece of DNA.
B) multiple linear pieces of DNA.
C) a linear RNA molecule.
D) a single circular DNA molecule.
E) multiple circular DNA molecules.
D
Bloom's Taxonomy: Knowledge
Section: The Structure and Replication of Genomes
Learning Outcome: 7.1
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In a cell membrane, the phospholipid heads are
a. hydrophobic b. nonpolar c. dissolved in the cell’s water d. sandwiched between the phospholipid tails e. formed by fatty acids
An important indicator of evolutionary relatedness is the
A. nitrogen base sequence of rRNA. B. size of the bacterial chromosome. C. size of the periplasmic space. D. size of the ribosomes. E. similarities of cell membrane proteins.
In the collecting ducts of the kidney, antidiuretic hormone promotes water conservation by increasing the levels of
A. Na+/glucose symporters. B. G-protein coupled receptors. C. vasopressin. D. Na+/K+ ATPase. E. aquaporins.
Which part of the hemoglobin molecule actually binds the oxygen molecule? Which part binds carbon dioxide?
A. globin chain; heme B. globin chain; globin chain C. heme; globin chain D. cell membrane; cell wall E. heme; heme