What type of medium has a composition that is chemically defined?
A) synthetic
B) nonsynthetic
C) complex
D) infusion
Ans: A) synthetic
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Which of the cytoskeletal filaments is associated with supporting the movement of materials inside the cell?
A. microtubules B. microfilaments C. intermediate filaments D. Answers a and b are correct.
How a male rat behaves toward a female has been shown to alter ____ in her brain, presumably then
activating ___ receptors in some neurons.
a. peptide hormones; neurotransmitter d. neurotransmitter release; testosterone b. neurotransmitter release; steroid hormone e. neurotransmitter release; peptide hormone c. cAMP kinases; steroid hormone
Which bone of the axial skeleton is connected to the tongue?
a. vomer b. hyoid c. maxilla d. palatine
What considerations affect the management decisions related to critical habitat for endangered species?
(a) Economic concerns only. (b) Biological concerns only. (c) Political concerns only.| (d) Political, economic, and biological concerns.