Two different species of pines release their pollen at different times. This is an example of:
A) geographic isolation. B) mechanical isolation.
C) behavioral isolation. D) temporal isolation.
Answer: D
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Use the following study to answer the following question(s): A current trend among professional baseball players is to wear braided titanium necklaces. The titanium reportedly regulates the flow of energy through the body. The player wearing the necklace then shows improved strength, tires less, and recovers more quickly.What should one do if the results of an experiment consistently do not support the original hypothesis?
A. Change the hypothesis to match the results. B. Accept the original hypothesis. C. Reject the original hypothesis and formulate a new hypothesis. D. Change the results to match the hypothesis.
Szostak and colleagues found that a ribozyme found in the human genome was related to a similar enzyme in human
hepatitis delta virus (HDV). In order to identify this ribozyme, they: A. searched the published human genome sequence for HDV sequences. B. searched the published human genome sequence for ribozyme sequences. C. incubated HDV RNA and evaluated the sample for ribozyme activity. D. incubated human RNA and evaluated the sample for ribozyme activity.
Farmers often practice crop rotation to help enrich agricultural fields. Why are beans and other legumes often used in the rotations?
A. Beans fix nitrogen. B. Bacteria in legume root nodules are nitrifiers. C. Legumes enrich the soil by forming heterocysts. D. Legumes remove toxins from the soil. E. Less carbon dioxide. 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 nutrient cycling? How does it relate to the question? · 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 "mosaic" part of the fluid mosaic model refers to the membrane ____
a. proteins b. phospholipids c. cholesterol d. functions e. layers