Which of the following generally causes stomata to close?
a. release of abscisic acid by the roots
b. a drop in CO2 concentration in leaf air spaces
c. exposure to red light
d. a drop in O2 concentration in leaf air spaces
e. an increase in water in the soil
A
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Boiling is very effective at removing most common waterborne pathogens
Indicate whether this statement is true or false.
In mammals, gas exchange between the air and blood takes place across the walls of the
A. diaphragm. B. pleural membrane. C. trachea. D. gills. E. alveoli.
Most CO2 from catabolism is released during
A) glycolysis. B) the citric acid cycle. C) lactate fermentation. D) electron transport. E) oxidative phosphorylation.
Which of the following prion diseases was also known as laughing disease?
a. Gerstmann-Straussler-Scheinker syndrome b. Bovine spongiform encephalopathy c. Kuru d. Creutzfeldt-Jakob disease