On food packages, "insoluble fiber" refers to plant material that we cannot fully digest, but is important for maintaining a healthy digestive tract. This substance refers to a(n):
A) carbohydrate.
B) nucleic acid.
C) protein.
D) lipid.
E) amino acid.
A) carbohydrate.
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Which of the following statements about
viruses is TRUE?
a. They were the first form of life to evolve. b. They do not attack plants. c. They are able to reproduce without using other organisms. d. They are made of protein only. e. They include some forms that are able to attack bacteria.
The two major forces contributing to allopatric speciation are:a
mutation and natural selection. b. natural selection and migration. c. nonrandom mating and migration. d. natural selection and genetic drift. e. genetic drift and mutation.
Which one of the following dissolves blood clots?
a) Streptokinase b) Streptolysin c) Hyaluronidase d) Deoxyribonuclease
A potential shortcoming of the probit/logit models is that to get consistent estimates of the parameters:
A. coefficient estimates cannot be evaluated against alternative hypotheses. B. moment conditions are required for each parameter to be estimated. C. the unobservables must be distributed via the standard normal (for probit) and logistically (for the logit). D. the determining function must be linear.