Which of the following structures contributes the most to the total refractive ability of the eye?
a. lens.
b. cornea.
c. ciliary muscle.
d. retina.
e. iris.
B
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Captive bonobos show grammatical knowledge similar to that of a(n) __________.
A) adult B) two-year-old child C) parrot D) domestic dog
Another name for a nerve cell is _____.?
A) ?neuron B) ?neurilemma C) ?myelin sheath D) ?neuroglia
When the pancreas does not produce enough insulin or the cells do not respond to the effects of the insulin that is produced:
A) the cells will metabolize oxygen and function normally. B) glucose levels in the blood and urine will be elevated. C) serum glucose levels will fall and brain damage may occur. D) the body will stop making glucose as a protective mechanism.
true or false? Replication of chromosomes occurs between meiosis I and meiosis II.
a. true b. false