An organism that grows best at a higher CO2 tension than is normally present in the atmosphere is a
A. facultative anaerobe.
B. aerobe.
C. anaerobe.
D. aerotolerant anaerobe.
E. capnophile.
Answer: E. capnophile.
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The macroplants of the midlittoral temperate Pacific and Atlantic are characterized by:
a. red algae. b. green algae. c. brown algae. d. seagrasses. e. mangals.
Alleles conferring red plumage to male cardinals are common because red plumage
A. is helpful in attracting prey. B. makes males less susceptible to predation. C. is an example of genetic drift. D. is preferred by female cardinals in choosing a mate. E. allows male cardinals to easily identify each other.
Identify which of the operon elements plays the most critical role in determining gene regulation in prokaryotes.
What will be an ideal response?
What is aseptic technique and why is it important? What are some sources of contamination in the lab?
What will be an ideal response?