Nitrogen fixation is the result of mutualism between plants and ________
a. viruses
b. bacteria
c. animals
d. fungi
b
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What is the main difference between a fat (triglyceride) and a phospholipid?
A. A fat has 4 fatty acids attached to glycerol, whereas a phospholipid has 3. B. A fat has 3 fatty acids attached to glycerol, whereas a phospholipid has 4. C. A phospholipid has 2 fatty acids attached to glycerol, whereas a fat has 3. D. A phospholipid has 3 fatty acids attached to glycerol, whereas a fat has 2. E. None of the above are true.
In seed-bearing plants, what structure becomes the seed following fertilization?
A. The microsporangium. B. The pollen grain. C. The ovule. D. The endosperm. E. The sporophyte.
The rate of diffusion is influenced by ________.
Fill in the blank(s) with the appropriate word(s).
A kidney dialysis machine
a. may cleanse the patient’s blood outside the body. b. may use the patient’s abdominal cavity as the site for solute exchange. c. may use hemodialysis. d. may use peritoneal dialysis. e. may do all of these.