A(n) __________ is a group of 20 proteins activated by a series of reactions, in which one activated chemical then activates another; and promotes inflammation, phagocytosis, and cell lysis.
a. complement
b. interferon
c. lysozyme
d. mucus
e. sebum
Answer: a
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Biology
- The osmoregulatory/excretory system of a freshwater flatworm is based on the operation of _____.
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- Components of the transulfuration pathway include all of the following except _____.
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- The fixation of nitrogen requires _______.
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- SAM is a methyl donor in the synthesis of ______.
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- All of the following are purine bases except _____.