If a T cell is exposed to a "hidden" antigen, what kind of immune reaction will result?
A. an autoimmune disease
B. a delayed hypersensitivity reaction
C. a cytotoxic hypersensitivity reaction
D. allergic contact dermatitis
E. an allergy
Answer: A
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Which of the following endocrine organs and hormones are not paired correctly?
A. anterior pituitary gland: vasopressin B. posterior pituitary gland: oxytocin C. hypothalamus: releasing factors D. anterior pituitary gland: growth hormone E. posterior pituitary gland: antidiuretic hormone
Plasma approximately makes up what percent of the total blood volume?
a. 10 percent b. 25 percent c. 50 percent d. 75 percent e. 90 percent
During menopause:a
estrogen levels rise. b. menstruation ceases. c. many ova are released. d. women experience cold flashes. e. all of these are correct
How would the two cells be affected by inactivating these proteins?
You are investigating two temperature-sensitive mutant cells. In one, you can inactivate shugoshin activity by raising the temperature slightly at the start of meiosis. In the other, you can similarly inactivate separase activity by raising the temperature. What will be an ideal response?