Cornelia's boyfriend, Alfred, says he no longer wants to wear a condom during sexual intercourse. How should Cornelia respond?
A. "OK, but just once."
B. "If I get pregnant, you're responsible."
C. "No condom, no sex."
D. "Let me get my diaphragm."
E. "OK, but be careful."
Answer: C
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One type of bare lymphocyte syndrome is caused by a genetic defect in MHC class II transactivator (CIITA), which results in the inability to synthesize MHC class II and display it on the cell surface. The consequence of this would be that
a. B cells are unable to develop b. CD8 T cells cannot function c. CD4 T cells cannot function d. intracellular infections cannot be eradicated e. peptides cannot be loaded onto MHC molecules in the lumen of the endoplasmic reticulum.
Which component of the blood surrounds and consumes foreign material in phagocytosis?
A. White blood cells
B. Blood plasma
C. Red blood cells
D. Blood platelets
Stretching may
a. promote relaxation. b. tear muscle tissue if done ballistically. c. help prevent muscle and joint injury. d. improve range of motion. e. all of the answers are correct
Most of the alcohol consumed reaches the bloodstream by passing through the lining of the large intestine
Indicate whether the statement is true or false