During a fever, the __________ readjusts the set point of the body to a __________ temperature.
a. thyroid; lower
b. hypothalamus; lower
c. hypothalamus; higher
d. pineal gland; higher
e. adrenal glands; lower
Answer: c. hypothalamus; higher
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If a cell has a normal osmotic pressure of 4500 mmHg and is placed into a solution with an osmotic pressure of 3500 mmHg, what will happen to the cell?
A. The cell will lose water and its osmotic pressure will decrease. B. The cell will gain water and its osmotic pressure will decrease. C. The cell will gain water and its osmotic pressure will increase. D. The cell will lose water and its osmotic pressure will increase.
Review the experiment illustrated in Figure 8.7
Experiment #2 and on what you know about photosynthesis, which of the 2-D paper chromatography patterns below would be observed if the cells treated with C14 had been allowed to remain in culture for a longer period of time before they were put in the boiling alcohol? What will be an ideal response?
The leaves of ginkgo trees are unique because they have
A. unbranched veins. B. forked veins. C. multiply branching veins. D. veins in a netlike pattern. E. veins only around the edges.
What is the role of the F factor in bacterial recombination?
What will be an ideal response?