________ is the cause of a foul smell on sandy beaches
a. Sulfur dioxide
b. Isopods
c. Hydrogen sulfide
d. Aerobic bacteria
c
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The bacteriocins produced by Escherichia coli are called colicins.
Answer the following statement true (T) or false (F)
White blood cells are produced
A. by mitotic division of other white blood cells. B. from platelets. C. from chondrocytes. D. from bone marrow stem cells. E. from plasma proteins.
The seasonal cessation of activities accompanied by a reduction in metabolism in response to cold temperatures during winter is called
A) hibernation. B) torpor. C) heterothermy. D) diapause.
Cilia and flagella are most similar in ____.
A. length B. the kinds of cells that have them C. the number that cells usually have D. their internal composition and structure E. their location along the cell's periphery