The profundal zone is characterized by:
a. phytoplankton only
b. producers and consumers
c. plants and animals
d. decomposer only
e. decomposers and detritivores
e
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A flower that lacks one or more of the four types of modified leaves is referred to as ____
a. perfect b. imperfect c. complete d. incomplete e. irregular
Four of the five statements listed below apply to the types of ecological pyramids. Which one is FALSE?
a. A pyramid of numbers has the greatest number of organisms at the top. b. A pyramid of energy shows that energy increases as one goes toward the apex of the pyramid. c. A pyramid of biomass cannot be inverted. d. The base of all ecological pyramids is equal in size to the top. e. The pyramid of biomass show actual biomass reduction from one trophic level to the next.
Macro nutrients are nutrients
Which of the following statements best describe the way molecules move across a plasma membrane?
A. Lipid molecules do not pass through the plasma membrane easily. B. Charged molecules pass through the plasma membrane easily. C. Large molecules pass through the plasma membrane easily. D. Small, uncharged molecules pass through the plasma membrane easily. E. Water and gas molecules require "helper" proteins to move through the plasma membrane.