The area around the center of an atom, which contains negatively charged subatomic particles, is called the electron
A) cloud.
B) nucleus.
C) active site.
D) buffering zone.
E) double helix.
A) cloud.
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One strategy to prevent AIDS transmission is to be sure to use birth control pills when engaging in sexual intercourse.
a. true b. false
What causes striations in the cardiac muscle cells?
A) The overlapping of the actin and myosin proteins of the myofilaments B) The abundance of mitochondria C) The presence of myofibril contractile organelles D) The presence of the intercalated discs
When ligands bind to them, ________ receptors directly phosphorylate enzymes within the cell.
A. enzymatic B. G protein-coupled C. channel-linked D. phosphatase
Net filtration pressure (NFP) is equal to the
A. blood hydrostatic pressure minus the tissue hydrostatic pressure. B. colloid osmotic pressure in the blood divided by resistance in the tissue. C. blood pressure times the total peripheral resistance. D. net hydrostatic pressure minus the net colloid osmotic pressure. E. osmotic pressure in the tissue minus the hydrostatic pressure in the blood.