Phenotypic similarities that provide no information about shared ancestry are ____

a. homologies
b. homoplasies
c. morphological
d. anatomical
e. physiological


ANSWER: b

Biology & Microbiology

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In a ribbon model of a polypeptide, broad arrows indicate:

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Biology & Microbiology

During the citric acid cycle, the production of CO2 is a(n) _____ reaction coupled to the production of ____________

A. oxidation; NADH B. oxidation; ATP C. reduction;, NADH D. reduction; ATP E. oxidation; GTP

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Recent studies have shown that some Clostridia species have peptidoglycan between an inner and outer membrane, and were therefore properly reclassed as Gram-negative because of their unrelatedness.  

Answer the following statement true (T) or false (F)

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A researcher in a lab finds a microscopic organism that has no nucleus, but has distinctive structural

molecules and mechanisms of photosynthesis. The organisms are abundant in virtually every habitat on Earth. The researcher has identified an organism belonging to the domain ____.

a. Bacteria b. “Protist” c. Eukarya d. Animalia e. Amoeba

Biology & Microbiology