Which of the following makes its own food using energy and simple raw materials it obtains from nonbiological sources?

A. Producer
B. Nutrient
C. Consumer
D. Cell
E. Protist


Answer: A

Biology & Microbiology

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A. tunicates and echinoderms. B. cephalochordates and arthropods. C. tunicates and vertebrates. D. mollusks and cnidarians.

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A selective growth medium

A. allows only certain bacteria to grow. B. allows all bacteria to grow. C. allows no bacteria to grow. D. accentuates differences between the growing bacteria.

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If a characteristic is sex-linked , it

a. occurs most commonly in males b. occurs only in females c. is always fatal d. can never occur in females

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Which types of phenotypic ratios are likely to occur in crosses when dealing with a single gene pair for which all the genotypic combinations are of equal viability?

A) 12:3:1, 9:7 B) 1:4:6:4:1, 1:1:1:1 C) 9:3:3:1, 27:9:9:9:3:3:3:1 D) 2:3, 1:2 E) 1:2:1, 3:1

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