Which of the following structures is not a modified leaf?
1.petal
2.sepal
3.carpel
4.anther
4
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Two “magic” solutions are sold by a research supply company. “Magic Solution A” promises to extract all proteins, including integral membrane proteins, from the plasma membrane. “Magic Solution B” promises to simply extract all peripherally associated membrane proteins. What is the likely composition of “Magic Solution A” and “Magic Solution B”?
A. "Solution A" and "Solution B" both contain high salt buffers that disrupt hydrogen bonds and ionic interactions B. "Solution A" and "Solution B" both include membrane solubilizing detergent(s) C. "Solution A" is a membrane solubilizing detergent, "Solution B" is a high salt buffer that disrupts hydrogen bonds and ionic interactions D. "Solution A" is a high salt buffer that disrupts hydrogen bonds and ionic interactions, "Solution B" is a membrane solubilizing detergent
Which of the following genes would most likely play a role in promoting kin selection?
A. wingless -- critical for the formation of wings in fruit flies B. SRY -- the gene that initiates male sex determination C. Major Histocompatibility Complex (MHC) genes -- allow mammals to recognize related individuals D. the genes important for the development of large antlers in the caribou 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 the genetic basis of kin selection? 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? Reflection 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?
During the Krebs cycle,
a. substrate-level phosphorylation occurs. b. oxaloacetate is regenerated. c. electrons and H+ are transferred to coenzymes NAD+ and FAD. d. molecules of carbon dioxide are formed. e. all of these occur
Ectomycorrhizae, associations in which the fungal hyphae surround but do not penetrate the cell walls of the plant roots, usually involve
A. ascomycetes and zygomycetes. B. ascomycetes and basidiomycetes. C. basidiomycetes. D. zygomycetes. E. ascomycetes.