Alpha and beta interferons
A) help protect virus-infected cells from the effects of the pathogen.
B) protect the cells that secrete them from being invaded by a virus.
C) are produced by infected fibroblasts and macrophages.
D) produce active antiviral proteins (AVPs) that coat the surface of healthy cells and prevent the attachment of pathogenic viruses.
E) produce no adverse effects in the body.
C
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A ________ is one who believes that major evolutionary change happens, or can happen, by large "jumps" or bursts, such as mutations with large effects
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A hydroxyl group is
A) also called a carbonyl group. B) characteristic of proteins. C) characteristic of alcohols. D) composed of two oxygen atoms.
In relaxed muscle, calcium is found in high concentration in the
A) myofibril. B) T tubules. C) sacroplasmic reticulum. D) sarcolemma. E) neuromuscular junction.
The DNA-protein complex that comprises eukaryotic chromosomes is called ________
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