Each tier of the biomass pyramid depicts the
__________ of all the organisms in an ecosystem.
a. size
b. number of species
c. dry weight
d. total weight
e. total utilization of materials
Answer: c
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The phylum that includes snails, clams, oysters, and octopuses is the
A. Ectoprocta. B. Brachiopoda. C. Mollusca. D. Annelida. E. Phoronida.
The primary virulence factor of Neisseria gonorrhoeae is ________.
A. a protease B. an exotoxin C. a hemolysin D. fimbriae E. an endotoxin
Which of the following supplies the greatest percentage of total energy for mankind?
a. natural gas b. nuclear energy c. petroleum d. coal e. renewable energy
The citric acid cycle generates NADH and FADH2, which are then used in the process of oxidative phosphorylation to make ATP
If the citric acid cycle (which does not use oxygen) and oxidative phosphorylation are separate processes, as they are, then why is it that the citric acid cycle stops almost immediately when O2 is removed?