Sharks differ from most other fish in that they
lack
a. gill slits.
b. scales.
c. bone.
d. paired appendages.
e. teeth.
C
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A cell has enough available ATP to meet its needs for about 30 seconds. What is likely to happen when an athlete exhausts his or her ATP supply?
A) He or she has to sit down and rest. B) Catabolic processes are activated that generate more ATP. C) ATP is transported into the cell from the circulatory system. D) Other cells take over, and the muscle cells that have used up their ATP cease to function.
An organism that invests energy primarily in growth, likely lives in
a. an aquatic environment b. a terrestrial environment c. a safe environment d. a risky environment e. I don't know the answer
All parts of the biosphere are linked by
A) high temperatures and low annual rainfall. B) the global water cycle and nutrient cycles. C) acid soil pH and fast wind speed.
Pasteur used swan-neck flasks in his experiments to prove that
A. dust in air was a source of living microorganisms. B. microorganisms could cause disease. C. microorganisms could be grown in laboratory infusions. D. air had "vital forces" capable of spontaneous generation. E. microbial fermentation could be used to make wine.