A woman who has a history of ovarian cancer in her family goes to her physician for a "cancer test.' What is the test that is most likely to be positive if the woman has ovarian cancer?
A. Carcinoembryonic antigen
B. Alpha-fetoprotein
C. Cancer antigen 125
D. Human chorionic gonadotropin
Ans: C. Cancer antigen 125
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Openings in leaves through which gases enter and exit are called:
a. mesophylls b. xylems c. rubiscos d. stomata e. phloems
Four of the following might be a response to rising body temperature. Which one is the exception?
a. increased rate of breathing b. decreased secretion of certain hormones c. more sweat d. reduced blood flow to skin e. increased rate of breathing
In arthropods, locomotion is accomplished by muscles that work against
A. each other. B. mineralized bones. C. a hydrostatic skeleton. D. the exoskeleton. E. the pseudocoel.
In a healthy person, after a large meal, the production of _____ will increase. After fasting, the production of _____ will increase
A) trypsin; trypsinogen B) glucagon; glucose C) glucagon; pepsinogen D) insulin; glucagon