The type of bond illustrated in the accompanying diagram is a(n):
a. ionic bond.
b. polar bond.
c. hydrogen bond.
d. single covalent bond.
e. double covalent bond.
ANSWER: d
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If you experimentally reduce the concentration of K+ in the extracellular fluid surrounding hair cells in the inner ear, the result would be like which of the following?
A) decreasing the volume of sound reaching the hair cells B) increasing the volume of sound reaching the hair cells C) decreasing the frequency of sound reaching the hair cells D) increasing the frequency of sound reaching the hair cells
All organisms store energy in a chemical form called:
A. glucose. B. DNA. C. ATP. D. RNA. E. protein.
The technique of preparing mitotic chromosomes involves a staining procedure using Giemsa stain. In this procedure, chromosomes are first ________ and then exposed to stain, producing ________ in a standard human karyotype.
A) heated; hundreds of reproducible bands B) heated; thousands of reproducible bands C) fragmented; hundreds of reproducible bands D) fragmented; hundreds of variable bands
Traditionally, chymotrypsin used in the food
industry was obtained from
a. mold fermentation. b. yeast fermentation. c. sheep stomachs. d. bacterial fermentation. e. calf stomachs