Gingivitis is an inflammation of the tissues of the gum
a. True
b. False
Indicate whether the statement is true or false
True
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The heart is part of the ______ system
Fill in the blank(s) with correct word
The heart is enclosed in a single-walled, membranous pericardial sac
a. True b. False Indicate whether the statement is true or false
Once cytotoxic T cells are produced, which of the following is (are) consistent with their ability to attack intracellular viruses?
A. Most nucleated cells process antigens through the MHC class I mechanisms. B. Viral antigens are processed by the MHC class I mechanism and are presented to the cell surface. C. Cytotoxic T cells bind to MHC class I processed antigens. D. Cytotoxic T cells bound to the MHC class I processed antigens release lymphokines. E. All of these choices are correct.
When the body has excess energy and builds molecules to store it, which molecule do we build MOST?
A. Cholesterol B. Triglycerides C. Glycogen D. Glucose