Which protists form colorful multinucleate masses?
A) euglenids
B) plasmodial slime molds
C) cellular slime molds
D) forams
E) water molds
Ans: B) plasmodial slime molds
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AMP-activated protein kinase (AMPK) is an enzyme that is activated by high levels of AMP in cells. If levels of AMP are high in cells, that means that levels of ATP are low. Once active, AMPK activates catabolic pathways and inhibits anabolic pathways in the cell. Why do you think that is the case? Choose the answer that best explains the role of AMPK
A. High levels of AMP indicate that there is a high amount of energy stored in the cell, thus activating catabolic pathways and inhibiting anabolic pathways are mechanisms to use stored energy. B. By inhibiting anabolic pathways, AMPK provides a mechanism to generate heat for the cell, which is important if AMP levels are high in the cell. C. By activating catabolic pathways, AMPK provides a mechanism to activate exergonic pathways, which is important if AMP levels are high in the cell. D. Activating catabolic pathways and inhibiting anabolic pathways will ultimately lead to higher consumption of ATP, which is important if AMP levels are high in the cell.
Which of the following immunological tests would allow the specific identification of a microorganism directly in a patient specimen?
A) fluorescent antibody (FA) B) radioimmunoassay (RIA) C) enzyme-linked immunosorbent assay (EIA) D) agglutination
A phylogenetic species comprises ____
a. populations that share a recent evolutionary history b. individuals that share a recent evolutionary history c. interbreeding populations that are reproductively isolated d. individuals that share measurable traits that distinguish them e. one large gene pool subdivided into local populations
Some viruses can carry their genes as ________.
A. DNA B. RNA C. protein D. two of the above E. all of the above