The disease sickle cell anemia is an example of what can happen if
A) the diet is deficient in iron.
B) there is insufficient heme in the hemoglobin.
C) a gene for adult hemoglobin is abnormal.
D) red blood cells bind too much oxygen.
E) hemolysis is prevented by a bad gene.
Answer: C
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Which region of the brain serves as the major relay station for most sensory impulses that reach the primary sensory areas of the cerebral cortex from the spinal cord and brain stem?
a) Thalamus b) Hypothalamus c) Epithalamus d) Pons e) Midbrain
Graded potenials generally occur only on the axon of a neuron
Indicate whether this statement is true or false.
The largest volume of water in the body is:
a. plasma b. the fluid inside the cells c. interstitial fluid d. lymph
Which of the following enter the interior of the eye?
a. 2,3,4, and 6 b. 2 and 3 c. 3 only d. 2 only e. 3,4, and 6