If a polypeptide contains 9 peptide bonds, how many amino acids does it contain?
A) 0
B) 5
C) 12
D) 11
E) 10
E) 10
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The order in which HIV breaches barriers and affects immunity is
A) ingestion, entering the circulation, entering helper T cells. B) crossing the mucosal barrier, then entering macrophages, then B cells, then natural killer cells. C) inhalation, entering the circulation, entering helper T cells. D) crossing the mucosal barrier, then entering macrophages, then entering helper T cells, then cytotoxic T cells.
The main component of insect chitin is
A) Polysaccharide. B) Protein. C) Lipid. D) Nucleic acid.
Cardiac muscle fibers form extensive connections with one another at specialized regions called ________.
Fill in the blank(s) with the appropriate word(s).
A person who goes from sea level to a city that is 5000 feet above sea level will show an increased hematocrit within 2 to 3 days. Draw the reflex pathway that links the hypoxia of high altitude to increased red blood cell production.
What will be an ideal response?