The uncharged component of the atom is the
A. electron.
B. proton.
C. neutron.
D. muon.
C
Biology & Microbiology
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The rhythmic expansion and recoil of the wall of an artery close to the skin's surface is a(n) ________
Fill in the blank(s) with correct word
Biology & Microbiology
Which type of organisms were likely the first land animals?
a. birds b. reptiles c. mammals d. amphibians e. arthropods
Biology & Microbiology
Diffusion does not require the cell to expend ATP. Therefore, diffusion is considered a type of
A) exocytosis. B) passive transport. C) active transport. D) endocytosis.
Biology & Microbiology
About __________ of documented animal extinctions have been of invertebrates.
a. 50% b. 10% c. 20% d. 80% e. 90%
Biology & Microbiology