The data show that
A) at any given time there are more cells in G2 than G1.
B) protein used in G1 is recycled to produce protein in S.
C) not all cells at any given stage have the same amount of protein.
D) protein levels in cells remain constant throughout the cell cycle.
Answer: C
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The medium or media of choice used to recover Legionella is:
a. buffered charcoal yeast extract (BCYE). b. Regan-Lowe agar. c. Löwenstein-Jensen medium. d. blood and chocolate agars.
Oral rehydration solutions that contain both salt and glucose are highly effective in treating severe dehydration caused by diarrhea and vomiting. However, glucose or salt alone are not effective. Why?
A. Sodium transport and glucose transport are coupled in the small intestine so that glucose accelerates absorption of salt and water. B. Water alone rushes through the digestive tract too quickly to be absorbed by the body tissues. C. ATP is required to transport sodium unless glucose is available for cotransport. D. Glucose without sodium is broken down too quickly in the mouth by saliva.
The cell bodies of motor neurons are located
A) in the forebrain. B) in the gray matter of the spinal cord. C) next to the sensory receptors. D) in the muscles. E) outside the spinal cord.
Glucose not needed for immediate energy is stored in the _____ as _____.
A) Liver; glycogen B) Pancreas; sugar C) Liver; glucagon D) Pancreas; glycogen