Consumers of fish and fish products can promote sustainable fisheries by
a. purchasing fish at the lowest cost.
b. not buying monkfish, orange roughy, and Atlantic salmon.
c. making wise purchasing decisions.
d. both b and c
D
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A man has a mutation in the ATP synthase gene. This results in an inability to synthesize ATP properly, causing extreme muscle weakness. If this man has children, what is the likelihood that they will inherit this disease from him?
A. 100% B. 0% C. 50% D. 25% E. 75%
Typically, these bacteria would be captured and ingested, before they become established, by
a type of phagocyte called a(n) __________.
a. macrophage b. histamine c. antigen d. adaptive response
Which of the following regarding antigens is true?
A. A large antigen is likely to have many different epitopes, each of which can stimulate a distinct immune response. B. An antigen is a molecule which promotes a general immune response. C. Bacteria do not contain antigens. D. Antigens can only be recognized by their lipid moieties. E. The most effective antigens are small simple amino acid complexes.
Positive feedback differs from negative feedback in that _____
A) positive feedback benefits the organism, whereas negative feedback is detrimental B) the positive feedback's effector responses are in the same direction as the initiating stimulus rather than opposite of it C) the effector's response increases some parameter (such as body temperature), whereas in negative feedback it can only decrease the parameter D) positive feedback systems have only effectors, whereas negative feedback systems have only receptors