Which level includes all the other levels?
A. organisms
B. ecosystem
C. community
D. biosphere
E. population
Ans: D. biosphere
Biology & Microbiology
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Soil mineral particles that range from 0.2-0.02 mm in diameter are called ____
a. fine sand b. humus c. clay d. silt e. coarse sand
Biology & Microbiology
The motor neuron releases acetylcholine into the ____________________ to initiate a muscle contraction. Fill in the blank(s) with the appropriate word(s)
Biology & Microbiology
Which of the following senses involves molecules binding to a receptor surface?
A. sight B. hearing C. touch D. smell
Biology & Microbiology
Which term refers to the diffusion of water through a semipermeable membrane?
A. facilitated diffusion B. osmosis C. endocytosis D. diffusion E. active transport
Biology & Microbiology