In 1992, mangrove forests along the southern Florida coast and the Florida Keys were severely damaged by Hurricane Andrew. Up to 94% mortality was recorded in some areas, with only the shortest individuals surviving. Scientists have monitored the region and by 2001, the forest canopy had closed and the main species were rapidly gaining biomass. This is an example of:
A. island biogeography
B. inhibition.
C. the diversity-stability hypothesis
D. primary succession.
E. secondary succession.
E. secondary succession.
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What is the function of tropomyosin in muscle cells?
A. Tropomyosin binds to actin molecules and brings about shortening of the muscles. B. Tropomyosin covers the myosin binding sites on the actin molecules, preventing contraction from occurring. C. Tropomyosin is the contractile unit of the muscle cell. D. Tropomyosin stores calcium.
leaf cutter ant colonies, the ants clip leaves to feed a fungus garden and then the ants feed on the fungus. Is this a mutualistic relationship?
A. No, the ants are parasites on both the leaves and fungus. B. Yes, the ants and the trees are in a mutualistic relationship. C. No, the ants are leaf parasites but have no relationship with the fungus. D. Yes, the ants and the fungus are engaged in a mutually beneficial symbiotic relationship. 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 leaf cutter ants and 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?
What are the regions where DNA-binding proteins can make direct contact with exposed nucleotides?
What will be an ideal response?
Characteristics of rickettsias include
A. arthropods serve as life cycle hosts and vectors. B. host cells are required for ATP metabolism. C. obligate parasites requiring host cells for growth. D. gram negative coccobacilli. E. All of the choices are correct.