Which of the following would be used to sterilize a mattress?
A) autoclaving
B) formaldehyde
C) ethylene oxide
D) heavy metals
E) non-ionizing radiation
C
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Which is not done by ascomycetes? a. All of these are done by ascomycetes
b. Cause human yeast infections. c. Spoils fruits. d. Allows bread to rise. e. Runs fermentation to produce beer and wine.
When exploring the Universe, looking for life, most scientists agree we should look for “carbon-based life forms.” Why is carbon considered so important to life?
a. Carbon atoms are a minor but very important component in lipids which are needed for life. b. The Carboniferous Period is a geological period on Earth when carbon was very prevalent. It is believed that all planets with life must pass through this period. c. The carbon atom’s ability to form four covalent bonds to as many as four different atoms makes it a fundamental structural component in the organic macromolecules. d. Carbon atoms make matter that burns readily, and it is believed that life could not develop without fire.
Patchiness of the soft-bottom benthos is a result of:
a. uneven distribution of food. b. uneven distribution of sediments on the bottom. c. low concentrations of nutrients on the bottom. d. uneven distribution of predators.
Which of the following does not have an environmental factor that affects the distribution of the phenotype?
a. phenylketonuria b. skin color c. height d. Marfan syndrome