The portion of the midbrain involved in dealing with auditory pathways is the ______
A.
inferior colliculus
B.
superior colliculus
C.
cerebral aqueduct
D.
tegmentum
C
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Which layer of skin is LEAST protected by melanin?
A) stratum spinosum B) stratum granulosum C) stratum corneum D) stratum basale
Which of the following describes the blind spot?
A. There are rod cells but no cone cells. B. There are cone cells but no rod cells. C. It is where bipolar cells block light from reaching the rods and cones. D. It is where the iris casts a shadow on part of the retina. E. It is where the optic nerve leaves the eye.
Melatonin is produced in the
a. anterior pituitary b. posterior pituitary c. pineal d. hypothalamus e. thyroid
Beaker 1 contains water at 23 degrees C. Beaker 2 contains water at 5 degrees C. Beaker 3 contains water at 95 degrees C. A drop of the same blue dye was placed in each beaker. After 10 minutes, the dye in beaker 1 moved 10 mm from the origin, whereas
the dye in beakers 2 and 3 moved 2 mm and 40 mm from the origin, respectively. Which of the following statements properly explains this observation? A) The rate of diffusion does not change as temperature changes. B) The rate of diffusion increases as temperature decreases. C) The rate of diffusion decreases as temperature increases. D) The rate of diffusion increases as temperature increases.