An anthropologist discovers the fossilized heart of an extinct animal
The evidence indicates that the organism's heart was large, was well-formed, and had four chambers, with no connection between the right and left sides. A reasonable conclusion supported by these observations is that the _____.
A) animal had evolved from birds
B) animal was endothermic and had a high metabolic rate
C) animal was most closely related to alligators and crocodiles
D) animal was likely an invertebrate animal
E) species had little to no need to regulate blood pressure
Answer: B
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The only fungi to produce cells with flagella are:
A. chytrids B. choanflagellates C. yeasts D. conidia E. bread molds
Refer to Figure 51-3. The allantois is identified by number:
a. 1.
b. 2.
c. 3.
d. 4.
e. 5.
The ratio of different-colored fluorescent dyes in microarray can be used to infer information about:a
patterns of gene expression only. b. drug activity only. c. the identity of disease-causing genes only. d. patterns of gene expression and also drug activity only. e. patterns of gene expression, drug activity, and the identity of disease-causing genes.
Which of the following describes a major component of the Staphylococcus aureus cell wall. It binds to the 'Fc' moiety (stem of the Y-shaped anitoby) of IgG, exerting an antiopsonin (and therefore strongly antiphagocytic) effect
A. capsule B. protein A C. cytolytic exotoxins D. superantigen exotoxins E. DNAse enzymes