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
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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
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
The units of inheritance are
a. heredities. b. evolutions. c. twins. d. metabolic activities. e. genes.
Cells produced by lateral meristems are known as _____
A) dermal and ground tissue B) lateral tissues C) pith D) secondary tissues