Insulin is a peptide hormone. Which of the following would occur in a muscle cell exposed to insulin?
A. Intracellular insulin levels would increase.
B. Intracellular glucose levels would decrease.
C. It would contract.
D. It would secrete glucagon.
E. Intracellular second messenger molecule levels would increase.
E. Intracellular second messenger molecule levels would increase.
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About how much solar energy is intercepted by Earth every minute?
a. 9 kcal per square meter b. 19 kcal per square meter c. 190 kcal per square meter d. 19 kcal per square kilometer e. 190 kcal per square kilometer
Locations where molten rock rupture a tectonic plate are called:
a. hot spots b. faults c. ridges d. weak spots e. trenches
Zonation within a community is typically the result of differences in the
A) patterns of predation among species within a community. B) rates of reproduction among species within a community. C) patterns of competition among species within a community. D) physical characteristics of the environment across a spatial gradient.
Fungal infections are called
A) mycoses. B) dimorphic. C) coencytic. D) sporgangia. E) basidium.