Which of the following equations represents the total water potential of a plant?
A. s2 + p2 = w2
B. ?p = ?w + ?s
C. ?w = ?p + ?s
D. ?s = ?p + ?w
E. ?w = ?s ¸ ?p
Answer: C
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How does a fermenter generate proton motive force (PMF) to drive active transport?
A. Fermenters use an electron transport chain for this purpose. B. Fermenters can reverse the direction of the ATP synthase to generate PMF. C. Fermenters cannot generate proton motive force.
Mycorrhizal fungi have a mutually beneficial relationship with plants in environments with soils that
A) are saturated with water. B) have a high clay content. C) are acidic. D) are low in nutrients.
Entamoeba histolytica can cause amoebic dysentery. It moves using pseudopodia, feeds heterotrophically, and is unicellular. Entamoeba histolytica is which of the following?
A. a protozoan B. an alga C. a slime mold D. a diatom E. a dinoflagellate
The complement fixation test uses red blood cells as the target for complement activation. Test serum containing antibodies is combined with a known amount of antigen in a tube, and then the RBCs and antibodies against the RBCs are added. A positive result for the complement fixation test would be
A) a line of precipitate near the bottom of the tube. B) a cloudy solution in the tube. C) loss of color in the tube. D) a fluorescent precipitate. E) a solution that is clear due to precipitation of RBCs.