Photoreceptors are sensitive to what general type of sensory information?
A. tactile
B. sound
C. temperature
D. chemicals in the animal's environment
E. electromagnetic radiation
E. electromagnetic radiation
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The white portion of your eye is called the:
A. retina. B. cornea. C. sclera. D. pupil.
Having the typical ratio of carbon, hydrogen, and oxygen of carbohydrates, the chemical formula for glucose is
A. C12H6O12. B. C6H6O12. C. C12H22O11. D. C6H12O6. E. C6H6O6.
The leaf-cutter ants of Central America use leaves as food to cultivate the basidiomycete Lepiota in special underground chambers. To use leaves as an energy source, Lepiota must do which of the following?
A. secrete enzymes to digest cellulose B. ingest and break down the leaves C. secrete enzymes to digest chitin D. produce antibiotics to kill the ascomycete E. produce antibiotics to kill Streptomyces
The mean lethal dose for high LET radiation is ______ than after low LET radiation.
a) higher b) lower c) the same d) unknown