Which major tissue type often has more extracellular matrix material than cellular material?
a. epithelial tissue
b. connective tissue
c. muscle tissue
d. nervous tissue
e. skin tissue
ANSWER: b
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In mammals, the brain region that has become especially important as a "relay center" for information passing from sensory structures to the cerebrum is the
A. hypothalamus. B. cerebellum. C. pons. D. thalamus. E. hippocampus.
Which of the following is equal to (1 - N/K)?
A) (N - K)/K B) (K - N)/K C) (K - N)/N D) (N - K)/N
Which of the following pigments enables red algae to utilize the dim light that penetrates ocean surface water as a source of energy?
A) chlorophyll a B) chlorophyll c C) lutein D) phycoerythrin E) ?-carotene
Which statement makes a prediction for the hypothesis "bird species have decreased in number in a particular wetland due to construction traffic"?
A) If a wetland area is disturbed by construction vehicles, then the number of bird species will decrease. B) If construction vehicles are in a wetland, then the birds will become too frightened to reproduce. C) If bird numbers decrease in a wetland, then construction vehicles must have polluted the environment. D) If construction vehicles enter a wetland, then new predators will arrive and reduce the bird populations.