Calmodulin is involved in the regulation of:
A. skeletal muscle contraction.
B. propagation of a nerve impulse across a
synapse.
C. contraction of smooth muscle.
D. propagation of heart muscle contraction to
the entire myocardium.
C
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The minimal lethal concentration (MLC) is the
A. lowest concentration of a drug that kills a particular pathogen. B. highest concentration of a drug that kills a particular pathogen. C. lowest concentration of a drug that prevents growth of a particular pathogen. D. highest concentration of a drug that prevents growth of a particular pathogen.
A(n) ____ is a type of chemical bond in which
a strong mutual attraction forms between ions of opposite charge.
a. hydrogen bond b. nonpolar bond c. polar bond d. covalent bond e. ionic bond
If light strikes a photopigment, the photoreceptor cell will decrease the amount of ________ it is releasing
Fill in the blank(s) with correct word
What mechanism did Charles Darwin discover as the driving force behind evolution?
A) the inheritance of acquired characteristics B) natural selection C) artificial selection D) common descent with modification