Simple diffusion across a plasma membrane is called passive transport because it ________.

a. requires transport proteins
b. requires energy from the cell
c. does not require energy from the cell
d. does not require control by the nucleus


Answer: c. does not require energy from the cell

Biology & Microbiology

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Members of the ____ subphylum, including shrimp, lobsters, and crabs, generally have five pairs of appendages on

their heads: two pairs of antennae and three pairs of mouthparts, including mandibles.

a. Myriapoda b. Trilobita c. Chelicerata d. Hexapoda e. Crustacea

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A flower with carpels and stamens but no petals or sepals is ____

a. perfect and incomplete b. imperfect and complete c. imperfect and incomplete d. perfect and complete e. sterile

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The units of inheritance are

a. heredities. b. evolutions. c. twins. d. metabolic activities. e. genes.

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Cells produced by lateral meristems are known as _____

A) dermal and ground tissue B) lateral tissues C) pith D) secondary tissues

Biology & Microbiology