What is the term for a large-scale terrestrial
ecosystem with a unique climate and
vegetation?
a. biosphere
b. ecosystem
c. trophic level
d. biome
e. community
D
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What change does binding of the sperm membrane to the oocyte membrane elicit?
a. The oocyte dispels its nucleus. b. The oocyte begins cleavage. c. The oocyte completes meiosis II. d. The sperm returns back to the oviduct. e. The sperm releases a polar body.
The F2 offspring of a classic Mendelian monohybrid cross between homozygous dominant and homozygous recessive parents would produce the genotype(s)
A. AA, Aa, and aa. B. Aa and aa. C. AA only. D. AA and Aa. E. Aa only.
A motor unit is
A) the bundle of axons that goes from the spinal cord to a muscle. B) one of the connective tissue-wrapped bundles of muscle fibers in a muscle. C) a motor neuron and all of the muscle fibers it controls. D) the muscle or group of muscles that accomplishes a specific movement.
Which domains contain organisms that lack a membrane bound nucleus?
(a). Archaea & Bacteria (b). Archaea & Eukarya (c). Bacteria & Eukarya (d). Eukarya & Animalia (e). Archaea & Animalia