Which hormone raises blood glucose levels?
A. glucocorticoids
B. epinephrine
C. insulin
D. glucagon
E. melatonin
D. glucagon
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The organism in the tropics that replaces limpets in the supralittoral fringe is
a. turtle grass. b. nerites. c. the hermit crab. d. knobby periwinkle. e. the coconut crab.
A microbe recovered from an environmental sample grows on a medium composed of agar and a mix of salts. The agar is not digested during incubation. The growth rate increases in high CO2 conditions. The organism is likely a(n)
A) autotroph. B) halophile. C) heterotroph. D) chemotroph. E) The answer cannot be determined from the information provided.
The seriousness of Coccidioides infection can be attributed to the formation and rupture of spherules
Indicate whether the statement is true or false
What would result from a single nucleotide deletion (point mutation) within the coding sequence of a structural gene?
A. a missense point mutation resulting in the change of one amino acid B. a frameshift mutation, producing a different amino acid sequence altogether C. a silent point mutation with no deleterious effects D. a nonsense point mutation resulting in the generation of a premature stop codon E. All of the choices are possible.