Which of the following is false regarding the
properties of sound?
a. The amplitude of a sound corresponds to
loudness.
b. The frequency of a sound is the number of wave
cycles per second.
c. Every ten-decibel increase in loudness
represents a tenfold increase in intensity.
d. A soft sound has a greater amplitude than a loud
sound.
e. A high note and a low note with the same
amplitude are equally loud.
Answer: d
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An individual has a genetic disorder in which their cell is not forming the correct protein structure for the cell membrane to allow entry of a particular ion. Doctors have determined that in order to help cure this person, they need to alter the shape of the protein. Which type of regulation of gene expression would have the greatest chance of success?
A. posttranscriptional control B. translational control C. transcriptional control D. posttranslational control E. pretranscriptional control
________ bonds form between amino acids during elongation.
A) Disulfide B) Peptide C) Hydrogen D) Glycine
What is the evolutionary significance of a flower that has large, brightly colored petals?
A) Such flowers produce only microspores or megaspores, not both. B) In general, these are aquatic plants, and water aids in their pollination, regardless of color and odor. C) Such plants are usually self-pollinators and do not rely on external factors for pollination. D) The wind is a significant factor in pollination, especially because of the large petals. E) These flowers attract pollinators that are animals.
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A) cytokinins; auxins B) gibberellins; abscisic acid C) auxins; cytokinins D) abscisic acid; ethylene E) abscisic acid; gibberellins