How do protists provide evidence for the step-wise evolution of mitosis?
A. Only meiosis occurs in protists.
B. In some protists the nuclear membrane fails to break down during mitosis.
C. Mitosis has not been observed in any protist species.
D. Protists use conjugation instead of mitosis.
Answer: B
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A plant has a mutation in the gene that codes for systemin. What is the likely consequence of this mutation?
A. The plant will have a stronger than normal wound response. B. The mutated form of systemin would be recognized as a pathogen and a hypersensitive response will be initiated. C. The levels of jasmonic acid will build inside the cell creating a toxic environment. D. Systemin receptors will not be activated and proteinase inhibitor will not be transcribed. E. R genes will fail to match up with avr genes. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? does the question contain and what do they mean? Gather Content · What do you already know about about the function of systemin? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? 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?
The subatomic particle(s) with a negative
charge is(are) a. the neutron. b. the proton. c. the electron. d. both the neutron and proton. e. both the proton and electron
What does an ABC transporter use to transport larger ions and molecules across the cell membrane?
a. ATP b. water c. porins d. signals e. tunnels
Ovules develop within the ovary, which is located in the swollen lower portion of which floral organ?
A. Stamen B. Pistil C. Anther D. Filament E. Stigma