Incompatibility in the Rh blood system can result in hemolytic disease of the newborn. Which combination poses the greatest risk?
a. Rh positive mother, Rh negative fetus
b. Rh positive father, Rh negative fetus
c. Rh negative mother, Rh positive fetus
d. Rh negative mother, Rh negative fetus
e. Rh positive mother, Rh negative father
c
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A molecule that closely resembles the shape of a substrate for an enzyme would most likely serve as a
A. noncompetitive inhibitor. B. allosteric inhibitor. C. competitive inhibitor. D. allosteric activator. 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 enzymes and inhibition? What other information is related to the question? Choose Answer Do you have all the information needed to answer the question? 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?
Why are fungi used to clean oil spills?
A. Fungi use the hydrocarbons in oil instead of CO2 during photosynthesis. B. The chemicals in oil kill off the fungus's competitors. C. Fungi use the organic molecules in the oil as food. D. Fungi store the hydrocarbons in their large central vacuoles. 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 fungi? 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? 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?
Many times species are composed of networks of distinct populations called metapopulations. When do metapopulations occur?
A. When a population is large and uniformly distributed. B. When a population in poor habitat continually sends out dispersers to bolster populations in better habitats. C. When a population in a better habitat does not send out colonizers into less suitable habitats. D. When suitable habitat is patchily distributed and separated by areas of unsuitable habitat.
A habitat
a. has a specific set of resources. b. is a place where a population lives. c. has a unique set of challenges. d. can vary a little or a lot. e. fits all of these descriptions.