The use of radiation to kill microorganisms that grow on food has been shown to be safe and effective.
a. true
b. false
a. true
Biology & Microbiology
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Facilitated diffusion differs from simple diffusion in that facilitated diffusion __________.
a. is an ion pump b. needs ATP c. requires a protein carrier d. doesn't need a gradient e. requires a protein carrier
Biology & Microbiology
Chromosomes condense during what phase of mitosis?
a. prophase b. prometaphase c. metaphase d. anaphase
Biology & Microbiology
Lichens are used by scientists as an indicator of pollution because they
a. require nonpolluted water to grow. b. are extremely sensitive to sulfur dioxide. c. react to small amounts of carbon monoxide. d. are very sensitive to ultraviolet radiation. e. respond to increased levels of chlorofluorocarbons.
Biology & Microbiology
Meiosis is to gametes as fertilization is to
A. mitosis. B. sperm. C. egg. D. zygote. E. chromosome.
Biology & Microbiology