Chemicals used to attract mates are called
A. allelopaths.
B. genetic byproducts.
C. hormones.
D. pheromones.
E. allomones.
Answer: D
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Four of the five answers listed below are blood proteins. Select the exception
a. epinephrine b. globulin c. hemoglobin d. fibrinogen e. albumin
Explain the advantages of using recombinant DNA technology to produce human proteins in transgenic plants,
animals, or cultured cells. What will be an ideal response?
An essential amino acid is one that:a
can only be obtained by eating plant and not animal protein. b. is absolutely required in large quantities for the body to function. c. is required in amounts of less than 100 milligrams per day. d. must be converted to glucose in the liver. e. cannot be made by the body, so it must be supplied in the diet.
What is the main mechanism by which fleshy fruits aid seed dispersal?
a. by being buried by animals b. by falling directly under the parent plant c. by being eaten by animals d. by floating away from the parent plant