What prevents food from entering the nasal cavities?
A. the hard and soft palates
B. the cheeks
C. the salivary glands
D. the mandible and maxilla
E. the tonsils
Answer: A
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Which statement best describes the relationship between a carpel and a pistil?
A. The two terms are merely two names for the same thing. B. A pistil is part of a male component of the flower whereas a carpel is part of a female component. C. A pistil can be composed of either a single carpel (in which case the two terms are synonymous) or of two or more carpels fused together. D. A pistil is a reproductive part of a flower whereas a carpel is a showy vegetative part. E. A pistil is part of the female component of a flower and a carpel is not even a flower part at all.
Suppose that the osmotic response element is in a promoter joined to the coding region of luciferase,
and this composite gene is in cultured renal medulla cells. The cells should glow when they are placed in a medium that is ____ to the cells.
a. hyperosmotic b. hypoosmotic c. hypoosmotic or isoosmotic d. isotoosmotic e. hyperosmotic or isotoosmotic
In humans, CCK induces _________.
What will be an ideal response?
The major concentrations of life in the oceans are found in
A) deep, large oceans due to high nutrient concentrations. B) the aphotic zone due to high light levels. C) the anoxic zone. D) regions of upwelling and in shallow coastal waters. E) the oligotrophic zone due to clear and clean water.