Which of the following does NOT influence
the pH of extracellular fluids?
a. respiration
b. a high protein diet
c. bicarbonate ions
d. filtration by glomerulus
e. phosphate and ammonia ions
D
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The first host response to a nonspecific tissue injury is described as
A. inflammation. B. reaction. C. antibodies. D. trauma.
Some ecologists have proposed that environmental heterogeneity in the tropics leads to greater diversity of trees. Which of the following assumptions underlying this concept seem(s) unlikely?
A) Tropical plants recognize much finer habitat differences in the tropics than they do in temperate regions. B) There is more environmental heterogeneity in the tropics than in temperate regions. C) Both of the above.
Magnification is achieved in a compound microscope through the initial magnification of the specimen by the ________ lens. This image is then projected to the ________ lens that will further magnify the specimen to form a virtual image received by the eye.
Fill in the blank(s) with the appropriate word(s).
Which of the following is an example of an exotoxin?
A) neurotoxin B) coagulase C) lipid A D) streptokinase E) collagenase