What is the equation relating flow to resistance and a pressure gradient?
A) flow = pressure × resistance
B) flow = pressure gradient / resistance
C) flow/resistance = 1/pressure gradient
D) flow × resistance = 1/pressure gradient
E) flow × resistance = pressure × gradient
Ans: B) flow = pressure gradient / resistance
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What changes might occur in the vagina if lactobacilli were eliminated?
A. The acidic pH might change to a more neutral (and pathogen-fostering) level. B. Lactobacilli often produce the anti-anaerobic bacteria compound hydrogen peroxide. Without it, anaerobic pathogens might cause disease states (e.g. gas gangrene). C. There would be no change in the health of the woman-other members of the normal microbiota would 'fill in the gap' in the population, resulting in no overall change. D. The acidic pH might change to a more neutral (and pathogen-fostering) level AND lactobacilli often produce the anti-anaerobic bacteria compound hydrogen peroxide. Without it, anaerobic pathogens might cause disease states (e.g. gas gangrene).
The rate at which producers convert solar energy into chemical energy is an ecosystem’s ____
a. standing crop biomass b. biogeochemical cycle c. net primary productivity d. efficiency e. gross primary productivity
Cells, cells, made of _____________.
Fill in the blank(s) with the appropriate word(s).