The first cloned mammal, Dolly:a
was stillborn.
b. developed arthritis and a virus-induced lung cancer at a relatively young age.
c. lived a short period of time before suffering advanced aging effects.
d. lived to a normal age for sheep.
e. lived longer than normal sheep
B
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The most prevalent cause of wine spoilage is the presence of
A. sulfur dioxide. B. carbon dioxide. C. acetic acid bacteria. D. ethanol.
In humans, one pair of pharyngeal pouches become the tube-shaped organ called the
A. esophagus. B. trachea. C. Eustachian tube. D. bronchial tube. E. pharynx.
The proteins of the cell membrane are
a. enzymes. b. channels through the membrane. c. transporters that move substances across the membrane. d. receptors. e. all of these.
A scientist is examining motile protist. He wishes to determine their direction of movement. Which of the following microscopic techniques is least likely to be used to view these cells?
A) light microscopy B) electron microscopy C) differential interference contrast microscopy D) fluorescence microscopy E) phase-contrast microscopy