Which two things are sensed by a Chlamydomonas cell's eyespot?
a. light location and colour
b. light location and intensity
c. light energy and colour
d. light energy and intensity
Ans: b. light location and intensity
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Bacteria may be stored
A. on a slant in the refrigerator. B. frozen in glycerol solution. C. freeze-dried. D. in broth at 37?C. E. on a slant in the refrigerator, frozen in glycerol solution, AND freeze-dried.
Penguins are preyed on by:
a. leopard seals and killer whales. b. narwhales. c. sperm whales. d. jaegers. e. frigate birds.
What is the major difference between prokaryotic and eukaryotic cells?
Insulin and glucagon are produced by a:
A) small proportion of the cells in the pituitary. B) large proportion of the cells in the pancreas. C) large proportion of the cells in the adrenal glands. D) small proportion of the cells in the pancreas.