A soil with roughly equal amounts of humus, silt, clay, and sand is called a ____

a. topsoil
b. loam
c. subsoil
d. compost
e. oversoil


ANSWER: b

Biology & Microbiology

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After the disruption, when electron transfer and ATP synthesis still occur, what must be present?

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A method of identification using immobilized, known antigens to identify unknown antibodies and vice versa, where the presence of the agent being tested for immediately brings about a color change is called ________.

A. immunochromatography B. Western blotting C. ELISA D. radioimmunoassay

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Marine snow refers to:

a. neston. b. seston. c. cobwebby aggregates of mucus. d. fecal pellets. e. necktonic organisms.

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Which of the following plants are capable of

secondary growth?

a. ferns b. horsetails c. club mosses d. conifers e. liverworts

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