BIO 1107 Chapter 3 practice questions with complete
solutions
A carbohydrate energy storage molecule found in animal liver
and muscle cells is:
1)
starch.
2)
glycogen.
3)
cellulose.
4)
a fatty acid.
5)
cholesterol. Correct Answer glycogen.
A chemical reaction in which polymers are synthesized from
their building blocks is called:
1)
hydrolysis.
2)
condensation.
3)
oxidation.
4)
reduction.
5)
dissociation. Correct Answer condensation.
A molecule of a saturated triacylglycerol contains:
1)
,the maximum number of double bonds between carbons in the
fatty acid chains.
2)
the maximum number of triple bonds between carbons in the
fatty acid chains.
3)
the maximum number of hydrogen atoms in the fatty acid
chains.
4)
fatty acid chains with both amino and carboxyl groups.
5)
alternating single and double bonds between carbons in the fatty
acid Correct Answer the maximum number of hydrogen atoms
in the fatty acid chains.
An amphipathic molecule has:
1)
two polar ends.
2)
two hydrophobic ends.
3)
a hydrophobic and a hydrophilic portion.
4)
only one hydrophobic end.
5)
only one hydrophilic end. Correct Answer a hydrophobic and a
hydrophilic portion.
An essential amino acid is one that the body cannot synthesize
in sufficient amounts.
1) True
, 2) False Correct Answer True
Analysis of a certain polymer shows that it contains phosphate
groups, ribose groups, and pyrimidines. Based on this
information, which of the following is the best description of
this compound?
1)
It is most likely ribonucleic acid.
2)
It is DNA.
3)
It is an inorganic compound.
4)
It contains thymine.
5)
It is a polypeptide. Correct Answer It is most likely ribonucleic
acid.
At which level of protein structure are peptide bonds most
important?
1)
primary
2)
secondary
3)
tertiary
4)
quaternary
5)
globular Correct Answer primary
solutions
A carbohydrate energy storage molecule found in animal liver
and muscle cells is:
1)
starch.
2)
glycogen.
3)
cellulose.
4)
a fatty acid.
5)
cholesterol. Correct Answer glycogen.
A chemical reaction in which polymers are synthesized from
their building blocks is called:
1)
hydrolysis.
2)
condensation.
3)
oxidation.
4)
reduction.
5)
dissociation. Correct Answer condensation.
A molecule of a saturated triacylglycerol contains:
1)
,the maximum number of double bonds between carbons in the
fatty acid chains.
2)
the maximum number of triple bonds between carbons in the
fatty acid chains.
3)
the maximum number of hydrogen atoms in the fatty acid
chains.
4)
fatty acid chains with both amino and carboxyl groups.
5)
alternating single and double bonds between carbons in the fatty
acid Correct Answer the maximum number of hydrogen atoms
in the fatty acid chains.
An amphipathic molecule has:
1)
two polar ends.
2)
two hydrophobic ends.
3)
a hydrophobic and a hydrophilic portion.
4)
only one hydrophobic end.
5)
only one hydrophilic end. Correct Answer a hydrophobic and a
hydrophilic portion.
An essential amino acid is one that the body cannot synthesize
in sufficient amounts.
1) True
, 2) False Correct Answer True
Analysis of a certain polymer shows that it contains phosphate
groups, ribose groups, and pyrimidines. Based on this
information, which of the following is the best description of
this compound?
1)
It is most likely ribonucleic acid.
2)
It is DNA.
3)
It is an inorganic compound.
4)
It contains thymine.
5)
It is a polypeptide. Correct Answer It is most likely ribonucleic
acid.
At which level of protein structure are peptide bonds most
important?
1)
primary
2)
secondary
3)
tertiary
4)
quaternary
5)
globular Correct Answer primary
