A(n) ________ binds to neighboring, uninfected cells and stimulates them to produce chemicals that may protect these cells from viruses.
A. complement
B. interferon
C. interleukin
D. lysis
Answer: B
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Each of the following factors affects the rate of external respiration except the
A) PO2 of the alveoli. B) PCO2 of the blood. C) thickness of the respiratory membrane. D) PN2 of the alveoli. E) solubility of oxygen in plasma.
Matching
A) Transfer RNA B) Messenger RNA C) Ribosomal RNA D) ATP E) Synthetase enzymes 15) Forms part of the subunits for the protein synthesizing organelle. 16) A molecule that binds to a specific codon and specific amino acid simultaneously. 17) Attaches the correct amino acid to its transfer RNA. 18) Provides the energy needed for synthesis reactions. 19) Produced in the nucleus, this molecule specifies the exact sequence of amino acids of the 20) May be attached to the ER or scattered in the cytoplasm.
Differences between skeletal muscle cells and typical cells include which of the following?
A) Skeletal muscle cells are larger than normal cells. B) Skeletal muscle cells are multinucleate. C) Skeletal muscle cells have one nucleus and typical cells have more than one. D) both A and B E) both A and C
Which injury is caused by repetitive movements that affect the wrist?
a. tennis elbow b. carpal tunnel syndrome c. dorsiflexion d. overextension