Patchiness of the soft-bottom benthos is a result of:

a. uneven distribution of food.
b. uneven distribution of sediments on the bottom.
c. low concentrations of nutrients on the bottom.
d. uneven distribution of predators.


B

Biology & Microbiology

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Indicate whether the statement is true or false.

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Gases enter and leave a mammal's body by diffusing across a:

a. membrane made up of multiple cell layers b. hard exoskeleton c. thin, moist membrane d. set of gills e. protective layer of thick cells

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Which describes genetic information prior to the beginning of mitosis?

A. centrioles B. chromatin C. centromere D. chromosomes

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Fluorescent antibody, ELISA, and immunoblotting tests involve the use of (hybridoma/labeled/unlabeled) antibodies.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology