Which is responsible for more cancer deaths in women: breast, colon and rectum, pancreas, or ovary?
A. breast
B. pancreas
C. ovary
D. colon and rectum
E. all are equal
Answer: A
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What is the role of the epiglottis?
A. Prevents food from entering the windpipe B. Produces vocal sounds C. Filters dust and other impurities from entering the respiratory system D. Produces the positive or negative pressures that force air into or out of the lungs
A decrease in the affinity of hemoglobin for oxygen caused by the binding of carbon dioxide to hemoglobin is described by the
A) Haldane effect. B) Bohr effect. C) carbamino effect. D) Henderson-Hasselbalch effect. E) respiratory quotient.
The situation as described in the paragraph above should select most directly against males that
A) are unable to distinguish food items that are red from those of other colors. B) are older, but still healthy. C) are capable of defending only moderately sized territories. D) have slightly lower levels of testosterone during breeding season than have other males. E) have no prior experience courting female house finches.
During the polymerase chain reaction (PCR), two strands of DNA are separated by
A) exposure to low pH. B) centrifugation. C) gel electrophoresis. D) exposure to heat. E) exposure to denaturing enzymes.