How does photosynthesis benefit nonphotosynthetic organisms such as humans?
What will be an ideal response?
Plants convert solar energy to chemical energy in the form of sugars and starches, which provide food for humans. During photosynthesis, oxygen is given off as a waste product. This provides the oxygen we breathe.
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Various cells in the body respond to the hormone epinephrine in various ways due to ________.
A. cellular respiration B. metabolism C. phosphodiesterase D. protein kinases E. differential gene regulation
An organism that obtains its carbon from CO2 is a(n) ____
a. autotroph b. auxotroph c. heterotroph d. chemotroph e. photoheterotroph
Habitat loss, natural catastrophes, and/or excessive harvesting of a species often result in
A) increased gene flow. B) increased fitness of individuals. C) increased mutation rates. D) artificial selection. E) population bottlenecks.
Which two designations of bacteria have the same/overlapping optimum temperature range?
A) Psychrophiles and hyperthermophiles B) Thermophiles and hyperthermophiles C) Mesophiles and thermophiles D) Psychrotrophs and mesophiles E) Psychrophiles and Psychrotrophs