The weak interactions between atoms that keep atoms near each other but don't tightly bind them together are called
A) ionic bonds.
B) van der Waals forces and ionic bonds.
C) van der Waals forces.
D) hydrogen bonds.
E) hydrogen bonds and van der Waals forces.
E) hydrogen bonds and van der Waals forces.
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Which of the following does not occur in the cytosol?
a. replication of chromosomes b. enzymatic regulation of intermediary metabolism c. storage of fat and glycogen d. synthesis of proteins e. glycolysis
Calcium that enters the cell during smooth muscle excitation binds with
a. calmodulin. b. inactive myosin kinase. c. troponin. d. myosin. e. actin.
Molecules that serve as chemical signals to open or close gated ion channels are ________.
A. communicators B. isotopes C. membrane potentials D. ligands E. responders
Yellow bone marrow is composed of ________.
A. cartilage B. adipose tissue C. areolar connective tissue D. blood-forming tissue