What is the contraction of smooth muscles that moves a bolus of food down the esophagus called?
A) emulsification
B) elimination
C) peristalsis
D) detoxification
C
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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 lacZ gene encodes
A. aromatase.
B. glucose dehydrogenase.
C. succinate dehydrogenase.
D.
E. carbonic anhydrase.
Sexual reproduction in multicellular Ascomycota leads to the production of
A) asci. B) basidia. C) conidia. D) sporangia E) zygotes.
________ bind two or more ions or molecules and transport them in opposite directions across a membrane.
A. Dual transporters B. Uniporters C. Symporters D. Antiporters E. Channel pumps