Who first proposed the concept that simple organic molecules could form spontaneously from simpler raw materials?
a. Miller and Urey
b. Charles Darwin
c. Thomas Malthus
d. Watson and Crick
e. Oparin and Haldane
e
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A ________ infection is a disease caused by a parasitic organism that is normally found in animals other than humans.
Fill in the blank(s) with the appropriate word(s).
Four of these five choices are global consequences of warmer temperatures. Select the exception
a. rising sea levels b. more intense hurricanes c. periods of drought d. periods of heavy precipitation e. some species shifting ranges to lower latitudes and elevations
Alexander Fleming had been running tests using Staphylococcus, and he left some plates out to incubate. Evidently, after returning to his lab after the weekend, he found that Penicillium mold was growing on his agar plates containing the growth of Staphylococcus. Looking more closely, he found a large, clear area around the mold colony where Staphylococcus colonies did not grow. Given this situation, a valid hypothesis would be that
A. the bacteriological medium being used in the plates was somehow inhibitory to the Staphylococcus growth. B. the room temperature incubation was inhibitory to the growth of Staphylococcus. C. the Staphylococcus was being inhibited by the Penicillium mold. D. the Penicillium mold was being killed by the Staphylococcus.
Individuals with diabetes (diabetes mellitus), in which blood glucose levels can be toxically high, are often recommended to avoid consuming sucrose (table sugar)
a) Why is sucrose not recommended for diabetics? b) Why would diabetics be urged to avoid foods that are high in starch? What will be an ideal response?