Which organisms cause "red tides?"
a. bacteria.
b. cyanobacteria.
c. euglenoids.
d. dinoflagellates.
d
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The physical appearance and physiology of an organism, resulting from interactions of its genetic makeup and its environment, is its
(a) phenotype. (b) hybrid vigor. (c) dominance. (d) genotype.
Which test is used to differentiate P. multocida from Mannheimia haemolytica?
a. Indole b. Catalase c. Nitrate d. Sucrose
In a cell membrane, the phospholipid heads are
a. hydrophobic b. nonpolar c. dissolved in the cell’s water d. sandwiched between the phospholipid tails e. formed by fatty acids
Slime molds and water molds are not considered to be fungi because
A. they are not decomposers. B. they do not have chitin in their cell walls. C. their reproductive cells do not have flagella. D. they do not have the ability to do photosynthesis.