On the basis of nutrient content, a mountain lake with little sediment or nutrients is classified as a(n) ________ lake
Fill in the blank(s) with correct word
oligotrophic
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Membrane delimited intracellular structures that perform specific functions in cells are called
A. organs. B. organelles. C. tissues. D. systomis.
Which of the following is/are TRUE regarding the function of the amygdala?
a. amygdalectomy leads to decreased fear and aggression b. electrical stimulation of the amygdala leads to reduced vigilance and attention levels c. human patients with amygdala damage fail to recognize fear in the facial expressions of others a. all of the above b. a and c
Which of the following could be used to sterilize plastic pipettes in plastic wrappers?
A. autoclaves B. incineration C. ionizing radiation D. ultraviolet radiation
Molecular clocks are based primarily on rates of
A. neutral mutations. B. favorable mutations. C. natural selection. D. horizontal gene transfer. E. detrimental mutations.