Which of the following is associated with the attachment of a bacteriophage to a bacterial cell?
A. random collisions
B. chemical attractions
C. receptor specificity
D. both chemical attractions and receptor specificity
E. random collisions, chemical attractions, and receptor specificity
Answer: E
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The results of this experiment, shown on the left of the graph (area A), may be used to _____
A) show that these plants can live without gibberellin B) show that gibberellin is necessary in positive gravitropism C) show that taller plants with more gibberellin produce fruit (pods) D) show a correlation between plant height and gibberellin concentration E) study phytoalexins in plants
If increased CO2 concentrations result in plant tissue that is less nutritious, which of these is not a potential consequence for insect herbivores?
A. They must eat more tissue. B. Their development may be slowed. C. They grow fatter because their diet has more carbohydrates. D. They use up more energy trying to eat for food. E. Their reproductive cycles may be disrupted because their rate of growth changes.
Which of the following organisms is NOT considered a great ape?
A) human B) baboon C) orangutan D) bonobo E) gorilla
Odor molecules stimulate responses in
A) rods. B) hair cells. C) free nerve endings. D) stretch receptors. E) olfactory receptors.