Which of the following is (are) true about cephalosporins?
A. They, like penicillin, inhibit bacterial cell wall synthesis.
B. They can be given to patients with penicillin allergies.
C. There are four generations of cephalosporins.
D. All of the choices are correct.
Answer: D
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Which of the following would you expect to be happening if a plant is showing water stress?
A. Abscisic acid is being transported to the guard cells. B. Xylem is no longer functioning to carry water up the plant. C. The phloem is transporting abscisic acid upward. D. Blue light is influencing the guard cells. E. All of these are correct.
Which of the following events is least likely to result in a genetic change in a bacterium?
A. pilus formation B. conjugation C. specialized transduction D. generalized transduction E. natural transformation Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about horizontal gene transfer? How does it relate to the question? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Leaves falling on the ground initially become a part
of soil horizon __________, but will later be a component of soil horizon __________. a. A; B b. A; O c. O; A d. B; A e. B; C
Which of the following is a laboratory method in which embryonic plants are grown from individual meristem cells?
A. Tissue culture propagation B. Double fertilization C. Vegetative reproduction D. Asexual reproduction E. Alternative germination