Which of the following is not a part of the male genital (reproductive) system?
A. Epididymis
B. Vas deferens
C. Prostate
D. Ureter
Answer: D
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Which of the following was first produced commercially using recombinant DNA technology?
A. hepatitis B vaccine B. interleukins C. human insulin D. human growth hormone
In transduction, bacterial cells
a. take up pieces of DNA that are released as other cells disintegrate. b. take up pieces of DNA through the use of a virus. c. replicate DNA molecules. d. make replicate copies of one another. e. generate their own DNA.
Wolves, seals, and cats have enlarged canines and molars designed for shearing rather than grinding or chewing. How would you classify these animals on the basis of the type of teeth they possess?
A) Herbivores B) Ruminants C) Carnivores D) Omnivores
Why is it sometimes a disadvantage to take aspirin to reduce a fever?
A) Aspirin makes you irritable and fatigued. B) Aspirin reduces the fever and stimulates a dangerous inflammatory response. C) Aspirin reduces the production of toxins so that you feel better, even though you are still sick and need to rest. D) Aspirin reduces the fever and therefore decreases the activity of phagocytic white blood cells.