Course

Cell Biology

Study Pack

Set 2 The Chemistry Of The Cell

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Question 1

(Multiple Choice)

Free
The moon lacks life and varies dramatically in temperature.If we could keep a layer of water spread on the surface of the moon,what effect would it have?

A)Physical conditions would remain the same.
B)Because water has a high heat of vaporization,the temperatures would rise to the upper extremes.
C)The temperatures would drop to the lower extremes.
D)Water would absorb and hold heat and moderate the temperature extremes.
E)Life would be possible,but it would have to withstand these extremes in temperature.

Answer

Question 2

(Multiple Choice)

Free
Which of the following is not a fundamental property of carbon?

A)Carbon-containing molecules are diverse.
B)Carbon-containing molecules may form stereoisomers.
C)Carbon-containing molecules are stable.
D)Carbon has a valence of 4.
E)Carbon atoms are most likely to form ionic bonds with one another.

Answer

Question 3

(Multiple Choice)

Free
Biologically,which of the following is the least important characteristic of water?

A)Water molecules are polar.
B)Water molecules form numerous hydrogen bonds.
C)Water is a good solvent.
D)Water typically contains isotopes of hydrogen.
E)Water has a temperature-stabilizing capacity.

Answer