Which of the following may be used as sources of energy by chemolithotrophs?
A. Reduced nitrogen compounds
B. Reduced sulfur compounds
C. Hydrogen gas
D. All of the choices are correct.
Answer: D
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Which of the following represents a monophyletic group?
A. mosses, liverworts, and hornworts B. ferns and club mosses C. ferns, whisk ferns, and horsetails D. liverworts and hornworts E. Charophytes and mosses 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 phylogeny? What other information is related to the question? Choose Answer Given what you now know, what information 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?
A toxin interferes with the opening of Na+ channels in the postsynaptic membrane so they open more slowly when
bound to a neurotransmitter. What effect would there be on action potential formation in the postsynaptic membrane?
What will be an ideal response?Which of the following is NOT considered
strengthening or supportive tissue? a. collenchyma b. xylem c. sclerenchyma d. parenchyma e. cork
Argentine fire ants entered the United States in
the a. 1920s. b. 1930s. c. 1940s. d. 1950s. e. 1960s.