Major regional groups of interacting terrestrial ecosystems, characterized by climate and geography, are called
A. biospheres.
B. tundras.
C. estuaries.
D. biomes.
E. taigas.
Answer: D
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A pathway that generates ATP by substrate-level phosphorylation that does not require oxygen and produces various end products, including alcohols, acids, carbon dioxide, and hydrogen, is:
a. substrate-level phosphorylation. b. fermentative metabolism. c. oxidative phosphorylation. d. aerobic respiration.
Salted and pickled foods can last unrefridgerated for many years because
A. the extreme salt or pH concentration denatures the proteins, including enzymes. B. the concentration gradient of salt or vinegar causes osmosis into the food. C. equilibrium with the environment has occured. D. the concentration gradient of salt or vinegar causes osmosis out of the food. E. the concentration gradient of salt or vinegar causes osmosis out of the food and the extreme salt or pH concentration denatures the proteins, including enzymes.
When there is more in the cell compared to what's outside of the cell it is called what?
What will be an ideal response?
You will be learning much about evolution in this course. A friend says to you that evolution isn't true because it's "just a theory." How would you respond to this?
What will be an ideal response?