The overgrowth of algae due to water contamination from fertilizer runoff is termed what?
a. acidification
b. alkalization
c. subduction
d. eutrophication
d. eutrophication
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Untranslated regions of the mRNA transcript may interact with motor proteins to enhance transport of the mRNA to a distinct region of the cell; or these regions may interact with proteins that repress the translation of the mRNA
A. true B. false
In order to elucidate the Calvin cycle, Calvin and his colleagues used two-dimensional paper chromatography to
analyze the presence of different molecules under different conditions. What did they conclude from the accumulation of RuBP when CO2 levels were low?
a. RuBP only reacts with CO2 in the sunlight. b. RuBP only reacts with CO2 when concentrations of ATP are low.
c. RuBP is the first substrate to react with CO2. d. RuBP is the last substrate to react in the Calvin cycle. e. CO2 serves as a non-competitive inhibitor of rubisco.
Algin is a substance used to thicken products as diverse as ice cream, cosmetics, and floor polish. It is
extracted from the cell walls of ____ algae.
a. green b. golden c. blue-green d. brown e. red
Approximately how many olfactory receptors do humans have in their olfactory epithelium?
a. 10 million b. 100,000 c. 200 million d. 50 million e. 500,000