In the time it takes to consume two SCBA air cylinders, enough body fluid can be lost to result in ______.
a. heat exhaustion
b. impaired temperature regulation
c. syncope
d. heat stroke
Answer: d. heat stroke
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Gases diffuse down a ____ gradient
a. volume b. temperature c. osmotic d. partial pressure e. chemical
As humans age, their ability to focus on nearby objects deteriorates. This is the result of
A) loss of rods and cones. B) increased viscosity of the aqueous and vitreous humor. C) stiffening of the lens and loss of accommodation capability. D) inappropriate response of the iris to varying light intensities. E) changing shape of the eyeball.
When Darwin covered the tip of a grass seedling with metal foil and then illuminated it from one side, what happened to the seedling?
A. It did not respond to the directional light. B. It waved back and forth. C. It wilted and died. D. It bent away from the directional light. E. It grew toward the light, as expected.
In both plant cells and animal cells, where do the microtubles of the mitotic spindle originate?
a. in the centromere b. in the organizing centres c. in the chromatid d. in the centriole