The genome of most prokaryotes consists of ____
a. a single linear DNA molecule
b. a single circular DNA molecule
c. many linear DNA molecules
d. many circular DNA molecules
e. a single DNA molecule that may be circular or linear, depending on the species
ANSWER: e
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Halophytes are plants that live in saline soils. The high osmotic potential of the salt solution in the soil creates a very negative water potential. What can halophytes do so that water will flow into the roots?
A. They can close their stomata so that less water is lost through transpiration. B. They can open all their stomata so that transpiration "pulls" more water into the roots. C. They can increase the solute concentration in their roots creating a water potential that is more negative than the soil. D. They can pump ions out of the plant creating a water potential in the roots that is more positive than the soil. E. They can remove the mycorrhizal fungi from their roots decreasing the competition for water. Clarify Question What is the key concept addressed by the question? What type of thinking is required? What key words does the question contain and what do they mean? Gather Content What do you already know about the adaptations that occurs in plants that live in salty environments? 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?
Unlike in animal meiosis, meiosis in plants gives rise to
a. diploid spores. b. haploid spores. c. diploid gametes. d. haploid gametes. e. cells without walls.
If you were watching the passage of material through the small intestine and saw the volume of digested ,aterial decrease as nutrients and water were absorbed, what part would you be looking at?
A. ileum B. duodenum C. jejunum D. all of the above
Basal metabolic rate is a measure of the energy required
A. during strenuous exercise. B. at rest. C. during normal daily activities. D. at birth.