About 50% of the world's commercial fish supply comes from areas of:
a. deep submarine canyons.
b. atolls.
c. benthic outer-edge of the continental shelf.
d. upwelling.
e. mid-ocean ridges.
D
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An inhibitor of mitosis would most likely have the greatest effect on the ____________________ of a plant
A. meristems B. construction of cell walls C. cells of the vascular tissue D. gastrula
What defines a lipid?
a. They are soluble in water. b. They are insoluble in polar solvents such as water. c. They are polymers. d. They always have a multi-ringed structure.
Smooth muscle is responsible for
A) voluntary body activities. B) the pumping action of the heart. C) an athlete's ability to run a 100-meter dash. D) involuntary body activities.
How might a plant cell compensate for the excessive membrane fluidity that occurs during prolonged exposures to elevated temperature?
A. reduce cholesterol content and alter the lipid composition to have shorter phospholipid tails B. reduce membrane cholesterol content C. alter the lipid composition to have shorter phospholipid tails and more double bonds D. alter the lipid composition to have shorter and more unsaturated phospholipid tails E. alter the lipid composition to have longer phospholipid tails and fewer double bonds