Which environment is ideal for plant cells, and which is best for animal cells?
a. isotonic for plant cells, and hypertonic for animal cells
b. isotonic for plant cells, and hypotonic for animal cells
c. hypotonic for plant cells, and isotonic for animal cells
d. hypotonic for plant cells, and hypertonic for animal cells
Ans: c. hypotonic for plant cells, and isotonic for animal cells
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Muscles are connected to bones by ____
a. ligaments b. epithelium c. tendons d. joints e. bones
Pinocytosis:a
is engulfment of large particles by the cell. b. occurs in protozoans and algae but not in more complex organisms. c. involves the specific binding of molecules to receptors on the cell surface. d. is the nonspecific uptake of fluids by pinching inward of the plasma membrane. e. is movement of molecules against the concentration gradient through a permeable membrane.
____ is best described as what and how an animal responds to stimuli in its environment
a. Behavior b. Learning c. Proximate causes d. Ultimate causes e. Direct fitness
What would result for global climate from a massive drop in atmospheric carbon dioxide?
A. An increase in ocean temperature B. Increased nitrogen availability C. Increased rock weathering D. A decrease in surface temperature E. A decrease in free oxygen content