This structure allows skates and rays to breath while at rest
a. Placoid scales
b. Spiracles
c. Gill slits
d. Spicules
b
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Mutations in which of the following are most likely to lead to cancer?
a. genes that control the cell cycle b. genes that code for muscle proteins c. genes that code for nerve cells d. genes that control for eye color
Most of the water that enters the plant:
a. leaves the plant through the root system b. is lost through transpiration c. remains in the plant to form the high concentration of water in plant tissue d. remains in the plant to function in translocation e. is used up in cellular metabolism
Which layer of the eye contains an extensive blood supply?
A. lens B. sclera C. choroid D. cornea E. retina
The environmental form of dimorphic fungus prefers a temperature of ___ for growth in the lab.
A. 10C B. 25C C. 37C D. 50C