Peeper frogs freeze during the winter. As they begin to freeze, their livers break down glycogen and release glucose into the blood, which can then be taken up into cells. This provides a benefit to the frog in that
a. plasma glucose acts as a cryoprotectant by lowering the freezing point of the extracellular fluid.
b. cellular glucose acts as a cryoprotectant by lowering the freezing point of the intracellular fluid.
c. cellular glucose is readily available for glycolysis once the frog thaws.
d. all of these.
e. none of these.
D
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The term "codon" refers to
A. a three-nucleotide sequence of DNA that codes for a protein. B. an amino acid that is coded for by three bases of DNA. C. a three-base sequence of mRNA. D. the part of a rRNA molecule where a new amino acid is added. E. the part of tRNA that is a triplet of bases that forms hydrogen bonds with complementary sequences.
Which of the following would not promote reabsorption from the venous end of the capillary bed?
A) increasing solute concentration in the nearby interstitial fluid B) decreasing hydrostatic pressure of the blood. C) reducing solute concentration in the nearby interstitial fluid D) increasing solute concentration in the plasma of the circulating blood
To which of the following organs would the systemic circuit for blood supply not go?
a. muscle injections. b. bone marrow transplants. c. infusion into the bloodstream. d. the lungs. e. nasal inhalants.
Match the structure associated with the eye with the appropriate description.A. The angle where the eyelids joinB. The space between the two eyelidsC. Another name for the eyelidsD. The membrane that covers the inner surface of the eyelidsE. The membrane that covers the anterior sclera of the eyePalpebral fissure
Fill in the blank(s) with the appropriate word(s).