The requirements of a living system include:
A. raw materials and energy.
B. catalysis of reactions.
C. a selective barrier.
D. biological information.
E. All of these choices are correct.
E
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Many plant defense compounds are used in human medicine
A. true B. false
Gel electrophoresis is used to separate nucleic acid amplicons based upon what physical property?
a. Sequence b. Duplex formation c. Size d. Secondary folding structure
If we want to know the percentage of particular genotypes within an actual population, assuming
complete dominance and two alleles, the one measurement we have to actually make is of the frequency of the
a. heterozygous phenotypes. b. heterozygous genotypes. c. homozygous dominant genotypes. d. dominant phenotypes. e. recessive phenotypes.
Which of the following is a type of microscope?
a. convex b. UV light c. dissecting d. scanning proton