In humans, brown adipose tissue is used for ____
a. nitrogenous waste processing
b. controlling blood pressure
c. nonshivering thermogenesis
d. digestion of fats
e. cooling the body when exposed
ANSWER: c
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The osmoregulatory/excretory system of an insect is based on the operation of _____
A) protonephridia B) metanephridia C) Malpighian tubules D) nephrons E) ananephredia
If a horticulturist breeding gardenias succeeds in having a single plant with a particularly desirable set of traits, which of the following would be her most probable and efficient route to establishing a line of such plants?
A) Backtrack through her previous experiments to obtain another plant with the same traits. B) Breed this plant with another plant with much weaker traits. C) Clone the plant. D) Force the plant to self-pollinate to obtain an identical one. E) Add nitrogen to the soil of the offspring of this plant so the desired traits continue.
Which of the following vessels offers more resistance to blood flow than the others?
a. arterioles b. venules c. arteries d. veins e. other capillaries
This bacterium's ability to survive in a human who is taking penicillin pills may be due to the presence of _____
1. penicillin-resistance genes 2. a secretory system that removes penicillin from the cell 3. a Gram-positive cell wall 4. a Gram-negative cell wall 5. an endospore A) 1 or 5 B) 2 or 3 C) 4 or 5 D) 2, 4, or 5