Some freshwater and marine fishes that are osmoregulators are estimated to expend _____ of their resting metabolic energy on osmoregulation
A. 10%
B. 20%
C. 30%
D. 50%
E. 60%
D
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You are interested in reducing the overall ecological impact of your college/university. Which of the following would immediately contribute to your goal? (Choose all correct answers.)
A. lower enrollment and a reduced college workforce B. decreased energy use in buildings C. installation of solar energy in some buildings
__________ are multicelled heterotrophs with
unwalled cells. Fill in the blank(s) with the appropriate word(s).
If a student was not being careful to pipette up and down several times between dilutions, (added the 1 mL of milk to the 1:10 sample, then withdrew 1 mL from the 1:10 sample and added it to the 1:100 dilution, then withdrew 1 mL from the 1:100 sample and added it to the 1:1000 dilution), what effect would that have on the dilutions being prepared?
A) The number of organisms per dilution would be artificially high B) The number of organisms per dilution would be artificially low
During repolarization ________.
a. potassium enters an axon and the inside of the cell becomes less negative b. potassium enters an axon and the inside of the cell becomes more negative c. potassium leaves an axon and the inside of the cell becomes less negative d. potassium leaves an axon and the inside of the cell becomes more negative