The method of movement that requires the
expenditure of ATP molecules is
a. simple diffusion.
b. facilitated diffusion.
c. osmosis.
d. active transport.
Ground Rules of Metabolism 43
e. bulk flow.
D
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Why are young leaves that are still in the bud considered "sinks" for phloem transport?
A. They produce carbohydrates through photosynthesis. B. They do not undergo photosynthesis. C. They do not have developed sieve tubes. D. The sucrose concentration is too high.
Entamoeba histolytica can cause amoebic dysentery. It moves using pseudopodia, can only feed by phagocytosis, and is unicellular. Entamoeba histolytica is classified as
A. an alga. B. an apicomplexan. C. a protozoan. D. a diatom. E. a slime mold.
Describe what caused the extinction of dodo birds. What will be an ideal response?
Explain how the stems and roots of a plant will respond at the cellular level if it is placed upon its side.
What will be an ideal response?