The methanogens
A.
are part of the Domain Archaea.
B. oxidize hydrogen gas to produce methane.
C. appear only in aerobic environments.
D. use oxygen as a terminal electron acceptor.
E.
are part of the Domain Archaea AND oxidze hydrogen gas to produce methane.
E
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The myocardium is the
A. sac surrounding the heart. B. layer of endothelial cells lining the wall of the heart. C. artery that carries blood away from the heart. D. artery that carries blood to the heart. E. thick, muscular layer of the wall of the heart.
__________ are short sections of underground stem
encased by overlapping layers of thickened, modified leaves called scales. a. Stolons b. Rhizomes c. Bulbs d. Corms e. Tubers
Heterozygotes for the sickle-cell allele show higher fitness than either homozygote genotype in malarial regions. This is an example of
A) epistasis. B) pleiotropy. C) founder effect. D) overdominance. E) codominance.
The fact that all matter is made up of tiny particles that are in constant motion is known as the
A. first law of thermodynamics. B. energy motion theory. C. kinetic molecular theory. D. first law of solids.