Protoplasm is all the living material
A. that makes up the contents of a cell.
B. inside the cell membrane except the nucleus.
C. inside the nucleus.
D. inside the cell except the protein material.
A. that makes up the contents of a cell.
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In the second phase of photosynthesis, chemical energy + __________ = sugar
a. carbon dioxide b. nitrogen c. oxygen d. water
CO2 is transported in the blood ____
a. dissolved in the plasma exclusively b. as bicarbonate ions exclusively c. bound to hemoglobin exclusively d. dissolved in the red blood cells exclusively e. dissolved in the plasma, as bicarbonate ions, and bound to hemoglobin
Monoclonal implies that the
A) antibodies come from a twin. B) antibodies are identical. C) cancer cells are all of one type. D) antigens are from a single source.
The Clean Air Act of 1990 was important because it specifically
A. stated that all politicians would from then on be pro-environment. B. detailed ways of making our air crystal clean by the year 2000. C. required scrubbers on smokestacks of coal-fired plants. D. punished polluters.