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Sample Exam Questions
Terms in this set (13)
The slight negative charge at one end of one water molecule is attracted to the slight positive charge of another water molecule. What is this attraction called?
A hydrogen bond
What is true about buffer solutions?
They maintain a relatively constant pH when either acids or bases are
added to them
Most mammals control their body temperature by sweating. Which property of water is most directly responsible for the ability of sweat to lower body temperature?
the absorption of heat by the breaking of hydrogen bonds
What is true of both starch and cellulose?
they are both polymers of glucose
Large organic molecules are usually assembled by polymerization of a few kinds of simple subunits. Which is an exception to this statement?
The structural level of a protein least affected by a disruption in hydrogen bonding is the
The bonding of two amino acid molecules to form a larger molecule requires
the release of a water molecule
What is the name of the function group shown here?
What is the structure shown?
Which of the following best summarizes the relationship between dehydration reactions and hydrolysis?
A) Dehydration reactions assemble polymers, and hydrolysis reactions break down polymers
B) Macromolecular synthesis occurs through the removal of water and digestion occurs through the addition of water
C) Dehydration reactions can occur only after hydrolysis
D) Hydrolysis creates monomers, and dehydration reactions break down polymers
E) A and B are correct
Which is true of cellulose?
it is a major structural component of cell walls
A double-stranded DNA molecule contains a total of 120 purine and 120 pyrimidine nucleotides. This DNA molecule could be composed of
120 thymine and 120 adenine molecules
The element nitrogen is present in all of the following EXCEPT
B) Nucleic acids
C) Amino acids
This set is often in folders with...
Lipids, Membranes, and the First Cells
The Chemical Context of Life
Water is Important for Life
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