Biochemistry is based on the chemistry of which element?
a. hydrogen
b. oxygen
c. carbon
d. sulfur
c
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Scanning electron microscopy (SEM) is especially suited to
A) observe living specimens. B) examine internal cellular structure. C) create a sense of depth. D) both choices A and C E) choices A, B, and C
The dance of a honeybee provides information about the ________ a new food source
a. amount of food and flower color of b. quality and quantity of c. competition from other bees at d. direction and distance to
Why are some proteins synthesized after single-codon mutations still semi-functional?
a. Proteins are transported to the nucleus to be compared to and corrected by the cell’s DNA. b. Degeneracy ensures that all single-codon substitution specify the same amino acids. c. Substituted amino acids may have similar properties as the originally specified amino acids. d. Only the average properties of every amino acid in a protein determine its functionality.
What is evolution that occurs as a result of a dramatic reduction in population size?
A) founder effect B) genetic drift C) gene flow D) population bottleneck