An organ system consists of
A) organs that collectively perform a vital body function.
B) a group of coordinated tissues.
C) a collection of similar cells.
D) blood, lymph, and other body fluids.
Answer: A
Biology & Microbiology
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Radioactive isotopes have
a. excess electrons. b. excess protons. c. excess neutrons. d. insufficient neutrons. e. insufficient protons.
Biology & Microbiology
Water is an example of a(n)
a. atom. b. ion. c. compound. d. mixture. e. element.
Biology & Microbiology
Which includes the other four?
a. atoms b. molecules c. electrons d. elements e. protons
Biology & Microbiology
If the ciliary muscle of the eye is damaged, then
a. color vision will be lost. b. the amount of light entering the eye cannot be regulated. c. proper focusing will be impossible. d. only peripheral vision is available. e. "night blindness" will become more evident.
Biology & Microbiology