So far, three classes of chromatin remodeling complexes have been identified. Which of the following pairings is correct?
A. SWI/SNF complexes ? activation
B. SMC complexes ? repression
C. ISWI complexes ? activation
D. Mi2/NURD ? activation
E. SWI/SNF complexes ? repression
A
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When members of two different populations breed, which selection pressure has occurred?
a. Genetic drift b. Natural selection c. Sexual selection d. Gene flow e. Founder effect
Which of the following plants produce seeds that germinate successfully under water?
A. wheat B. daffodils C. apples D. rice E. corn
Which of the following is a part of the first law of thermodynamics?
a. Energy can be neither created nor destroyed. b. Energy cannot be transformed. c. The entropy of the universe is constant. d. The entropy of the universe is decreasing. e. Potential energy is the energy of motion.
You are a botanist surveying a previously unstudied island. You discover a plant that has xylem with
tracheids but no vessel elements. The plant does not require any external water for fertilization. Into which group should you classify this plant?
a. Gnetophytes b. cycads c. gymnosperms d. angiosperms e. monocots