According to the optimal foraging theory, a predator will select prey 1 (P1 ) over prey 2 (P2 ) when
A) E1 < E2.
B) Th1 < Th2.
C) E1/Th1 < E2/Th2.
D) Nprey1 > N prey2.
B
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Yersinia pestis typically contains
A. one plasmid. B. two plasmids. C. three plasmids. D. four plasmids.
The electrons flowing through the electron transport chains in photosynthesis come from and end up being carried by _.
Examine this image, showing an electron transport chain in photosynthesis.
A. oxygen; NADPH
B. oxygen; water
C. NADPH; water
D. water; NADPH
E. NADPH; oxygen
Although Gregor Mendel knew nothing of chromosomes, mitosis, or meiosis, we now know that his Principle of Segregation corresponds to the events of _____
1.meiosis I 2.meiosis II 3.mitosis 4.both meiosis and mitosis 5.neither meiosis nor mitosis
Bacteriophages are
a. large bacteria. b. pathogenic bacteria. c. viruses that infect bacteria. d. virus-eating bacteria. e. viruses that infect eukaryotic cells.