The ____ lineage was a diverse group in the Mesozoic, but now is composed of only two living members, including

the tuatara.



a. Testudines
b. Archosauria
c. Squamata
d. Sphenodontida
e. Amphibia


ANSWER: d

Biology & Microbiology

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When using ________ as a terminal electron acceptor, Thiobacillus can sequentially reduce nitrate to nitrogen gas in a process called ________. Certain Thiobacillus species can also chemolithotrophically use ________ as an electron donor.

What will be an ideal response?

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Tree rings represent growth during wet and dry periods of the year. In a deciduous tree found in the north, which two seasons would contribute to tree rings?

A. summer and fall B. winter and summer C. winter and spring D. spring and fall E. spring and summer

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Oogenesis begins

A) at puberty. B) after copulation. C) after the sperm and egg merge. D) during embryonic development. E) at around day 14 of each menstrual cycle.

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