The receptors that detect the amount of salt in an
animal’s blood are
a. mechanoreceptors.
b. pain receptors.
c. thermoreceptors.
d. osmoreceptors.
e. all EXCEPT “osmoreceptors.”
Answer: d
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Food preference in garter snakes is a learned behavior
a. True b. False
Animal cells commonly have polysaccharides attached to ____ in their surface membranes
a. proteins b. nucleic acids c. lipids d. both nucleic acids and lipids e. both proteins and lipids
Environmental factors which can mediate resistance include
A) pH B) Cation concentration C) Atmospheric conditions D) Thymidine concentration E) All of the above
Which of the following statements about mobile genetic elements is true?
(a) Mobile genetic elements can sometimes rearrange the DNA sequences of the genome in which they are embedded by accidentally excising neighboring chromosomal regions and reinserting these sequences into different places within the genome. (b) DNA-only transposons do not code for proteins but instead rely on transposases found in cells that are infected by viruses. (c) The two major families of transposable sequences found in the human genome are DNA-only transposons that move by replicative transposition. (d) During cut-and-paste transposition, the donor DNA will no longer have the mobile genetic element embedded in its sequence when transposition is complete.