What was the basis for the original smallpox vaccine?
a. chickenpox virus
b. cowpox virus
c. rabies virus
d. smallpox virus
e. anthrax
Answer: b. cowpox virus
Biology & Microbiology
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Cells that can detect and respond to a hormone are known as
a. target cells. b. regulator cells. c. receptor cells. d. messenger cells. e. endocrine cells.
Biology & Microbiology
What is formed when an atom loses or gains an electron?
a. a molecule b. an ion c. a compound d. a mixture e. a solvent
Biology & Microbiology
The monomers of DNA and RNA are
A) monosaccharides. B) nucleotides. C) fatty acids. D) nucleic acids.
Biology & Microbiology
Endocytosis moves materials _____ a cell via ____________________
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology