Anti-viral drugs used to control certain viruses work by
A. causing the virus to replicate out of control
B. inhibiting the enzyme necessary for viral replication
C. making the virus more permeable to the drug
D. none of these
A. causing the virus to replicate out of control
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In western Sweden, coastal marine ecosystems have been exposed to discharge of nutrients over several decades. As a result, algal blooms are more common.Algal mats on the sea bottom limit sunlight and alter the amount of dissolved oxygen in the water. Additionally, some algae produce toxic compounds that can enter shellfish. Furthermore, the decomposing algae produces a strong odor. Which statements below correctly match the outcomes to their effects on value of the ecosystem? Check all that apply.
_____ Aesthetic value is lost because the algae makes the beach ugly and smells terrible. _____ Indirect economic value is lost because fisherman cannot catch their usual fish. _____ Direct economic value is lost because the toxic shellfish cannot be eaten. _____ Aesthetic value is gained because the algae could be used for biomass. _____ Direct economic value is lost because the properties near the beach aren’t as desirable. Additional: 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 the economic value of ecosystems? 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?
Four of the five animals listed below possess a
complete digestive system. Select the exception. a. human b. bird c. earthworm d. planaria e. fish
Why is oxygen considered highly electronegative?
A) It pulls electrons toward itself. B) It has a nonpolar structure. C) It repels electrons away from its nucleus. D) It discharges electrons readily out of the atom.
The symptoms of an immune complex reaction are due to
A) destruction of the antigen. B) complement activation. C) phagocytosis. D) antibodies against self. E) cytokines.