BIO 3020:ch 2 molecules and membranes EXAM
QUESTIONS WITH CORRECT ANSWERS TEXT
BAK
Multiple Choice
1. Fatty acids are stored in fat droplets in the form of
a. triacylglycerols.
b. phospholipids.
c. cholesterol.
d. glycolipids.
Answer: a
Textbook Reference: The Molecules of Cells
Bloom’s Category: 1. Remembering
Learning Objective: Compare the structures of fatty acids, phospholipids, and steroid
hormones.
2. Which of the following molecules stores the most chemical energy per unit
of weight?
a. Carbohydrates
b. Lipids
c. Proteins
d. Nucleic acids
Answer: b
Textbook Reference: The Molecules of Cells
Bloom’s Category: 2. Understanding
Learning Objective: Compare the structures of fatty acids, phospholipids, and steroid
hormones.
3. Sphingomyelin contains two hydrocarbon chains linked to
a. glycerol.
b. choline.
c. serine.
d. glycine.
Answer: c
Textbook Reference: The Molecules of Cells
Bloom’s Category: 1. Remembering
Learning Objective: Compare the structures of fatty acids, phospholipids, and steroid
hormones.
4. An amphipathic molecule is
a. water-soluble.
b. water-insoluble.
c. part water-soluble and part water-insoluble.
d. hydrophilic.
Answer: c
Textbook Reference: The Molecules of Cells
, BIO 3020:ch 2 molecules and membranes EXAM
QUESTIONS WITH CORRECT ANSWERS TEXT
BAK
Bloom’s Category: 1. Remembering
Learning Objective: Compare the structures of fatty acids, phospholipids, and steroid
hormones.
5. Steroid hormones are derivatives of
a. cholesterol.
b. phospholipids.
c. amino acids.
d. sugars.
Answer: a
Textbook Reference: The Molecules of Cells
Bloom’s Category: 1. Remembering
Learning Objective: Compare the structures of fatty acids, phospholipids, and steroid
hormones.
6. RNA in cells can serve as a
a. regulator of gene expression.
b. carrier of information from the nucleus to the cytoplasm.
c. catalyst or enzyme.
d. All of the above
Answer: d
Textbook Reference: The Molecules of Cells
Bloom’s Category: 2. Understanding
Learning Objective: Contrast the structures of RNA and DNA.
7. The pyrimidine bases in DNA are
a. adenine and guanine.
b. adenine and cytosine.
c. cytosine and thymine.
d. cytosine and guanine.
Answer: c
Textbook Reference: The Molecules of Cells
Bloom’s Category: 1. Remembering
Learning Objective: Contrast the structures of RNA and DNA.
8. Complementary base pairs form bonds to direct replication of DNA.
a. hydrogen
b. phosphodiester
c. glycosidic
d. covalent
Answer: a
Textbook Reference: The Molecules of Cells
Bloom’s Category: 1. Remembering
Learning Objective: Contrast the structures of RNA and DNA.
9. Which of the following is not a way in which DNA differs from RNA?
, BIO 3020:ch 2 molecules and membranes EXAM
QUESTIONS WITH CORRECT ANSWERS TEXT
BAK
a. DNA contains deoxyribose sugars.
b. DNA is usually a double-stranded molecule.
c. DNA contains thymine as one of its bases.
d. DNA can form hydrogen bonds with complementary sequences.
Answer: d
Textbook Reference: The Molecules of Cells
Bloom’s Category: 2. Understanding
Learning Objective: Contrast the structures of RNA and DNA.
10. Nucleotides function in cells as all of the following except
a. building blocks of nucleic acids.
b. carriers of chemical energy.
c. intracellular signal molecules.
d. defenders against infection.
Answer: d
Textbook Reference: The Molecules of Cells
Bloom’s Category: 1. Remembering
Learning Objective: Contrast the structures of RNA and DNA.
11. In DNA,
a. G pairs with T and A pairs with C.
b. G pairs with A and C pairs with T.
c. G pairs with C and A pairs with T.
d. G pairs with C and U pairs with A.
Answer: c
Textbook Reference: The Molecules of Cells
Bloom’s Category: 1. Remembering
Learning Objective: Contrast the structures of RNA and DNA.
12. Polymerization of nucleotides to form nucleic acids involves the formation of
bonds.
a. peptide
b. phosphodiester
c. glycosidic
d. hydrogen
Answer: b
Textbook Reference: The Molecules of Cells
Bloom’s Category: 2. Understanding
Learning Objective: Contrast the structures of RNA and DNA.
13. The main difference between double-stranded DNA (dsDNA) and single-stranded
DNA (ssDNA) is that
a. dsDNA has bases that include thymine (T), while ssDNA has bases including uracil
(U).
b. dsDNA has strands oriented in an antiparallel fashion, while ssDNA does not.
, BIO 3020:ch 2 molecules and membranes EXAM
QUESTIONS WITH CORRECT ANSWERS TEXT
BAK
c. dsDNA cannot undergo translation while ssDNA can leave the nucleus to undergo
translation.
d. dsDNA has 5’ to 3’ polarity while ssDNA does not.
Answer: a
Textbook Reference: The Molecules of Cells
Bloom’s Category: 4. Analyzing
Learning Objective: Contrast the structures of RNA and DNA.
14. The most abundant molecules in cells are
a. proteins.
b. carbohydrates.
c. lipids.
d. water.
Answer: d
Textbook Reference: The Molecules of Cells
Bloom’s Category: 1. Remembering
Learning Objective: Explain the properties of different types of chemical bonds.
15. Water is an ideal solvent in cells because it
a. has low heat of vaporization.
b. is a polar molecule that can form hydrogen bonds with itself and with other polar
molecules.
c. dissolves nonpolar molecules.
d. contracts when it freezes.
Answer: b
Textbook Reference: The Molecules of Cells
Bloom’s Category: 2. Understanding
Learning Objective: Explain the properties of different types of chemical bonds.
16. In polysaccharides,
sugars are linked together by means of bonds.
a. phosphodiester
b. peptide
c. glycosidic
d. hydrophobic
Answer: c
Textbook Reference: The Molecules of Cells
Bloom’s Category: 1. Remembering
Learning Objective: Diagram the structure of a simple carbohydrate.
17. Sugars can cyclize if they contain or more
carbons.
© 2019 Sinauer Associates, Inc.
QUESTIONS WITH CORRECT ANSWERS TEXT
BAK
Multiple Choice
1. Fatty acids are stored in fat droplets in the form of
a. triacylglycerols.
b. phospholipids.
c. cholesterol.
d. glycolipids.
Answer: a
Textbook Reference: The Molecules of Cells
Bloom’s Category: 1. Remembering
Learning Objective: Compare the structures of fatty acids, phospholipids, and steroid
hormones.
2. Which of the following molecules stores the most chemical energy per unit
of weight?
a. Carbohydrates
b. Lipids
c. Proteins
d. Nucleic acids
Answer: b
Textbook Reference: The Molecules of Cells
Bloom’s Category: 2. Understanding
Learning Objective: Compare the structures of fatty acids, phospholipids, and steroid
hormones.
3. Sphingomyelin contains two hydrocarbon chains linked to
a. glycerol.
b. choline.
c. serine.
d. glycine.
Answer: c
Textbook Reference: The Molecules of Cells
Bloom’s Category: 1. Remembering
Learning Objective: Compare the structures of fatty acids, phospholipids, and steroid
hormones.
4. An amphipathic molecule is
a. water-soluble.
b. water-insoluble.
c. part water-soluble and part water-insoluble.
d. hydrophilic.
Answer: c
Textbook Reference: The Molecules of Cells
, BIO 3020:ch 2 molecules and membranes EXAM
QUESTIONS WITH CORRECT ANSWERS TEXT
BAK
Bloom’s Category: 1. Remembering
Learning Objective: Compare the structures of fatty acids, phospholipids, and steroid
hormones.
5. Steroid hormones are derivatives of
a. cholesterol.
b. phospholipids.
c. amino acids.
d. sugars.
Answer: a
Textbook Reference: The Molecules of Cells
Bloom’s Category: 1. Remembering
Learning Objective: Compare the structures of fatty acids, phospholipids, and steroid
hormones.
6. RNA in cells can serve as a
a. regulator of gene expression.
b. carrier of information from the nucleus to the cytoplasm.
c. catalyst or enzyme.
d. All of the above
Answer: d
Textbook Reference: The Molecules of Cells
Bloom’s Category: 2. Understanding
Learning Objective: Contrast the structures of RNA and DNA.
7. The pyrimidine bases in DNA are
a. adenine and guanine.
b. adenine and cytosine.
c. cytosine and thymine.
d. cytosine and guanine.
Answer: c
Textbook Reference: The Molecules of Cells
Bloom’s Category: 1. Remembering
Learning Objective: Contrast the structures of RNA and DNA.
8. Complementary base pairs form bonds to direct replication of DNA.
a. hydrogen
b. phosphodiester
c. glycosidic
d. covalent
Answer: a
Textbook Reference: The Molecules of Cells
Bloom’s Category: 1. Remembering
Learning Objective: Contrast the structures of RNA and DNA.
9. Which of the following is not a way in which DNA differs from RNA?
, BIO 3020:ch 2 molecules and membranes EXAM
QUESTIONS WITH CORRECT ANSWERS TEXT
BAK
a. DNA contains deoxyribose sugars.
b. DNA is usually a double-stranded molecule.
c. DNA contains thymine as one of its bases.
d. DNA can form hydrogen bonds with complementary sequences.
Answer: d
Textbook Reference: The Molecules of Cells
Bloom’s Category: 2. Understanding
Learning Objective: Contrast the structures of RNA and DNA.
10. Nucleotides function in cells as all of the following except
a. building blocks of nucleic acids.
b. carriers of chemical energy.
c. intracellular signal molecules.
d. defenders against infection.
Answer: d
Textbook Reference: The Molecules of Cells
Bloom’s Category: 1. Remembering
Learning Objective: Contrast the structures of RNA and DNA.
11. In DNA,
a. G pairs with T and A pairs with C.
b. G pairs with A and C pairs with T.
c. G pairs with C and A pairs with T.
d. G pairs with C and U pairs with A.
Answer: c
Textbook Reference: The Molecules of Cells
Bloom’s Category: 1. Remembering
Learning Objective: Contrast the structures of RNA and DNA.
12. Polymerization of nucleotides to form nucleic acids involves the formation of
bonds.
a. peptide
b. phosphodiester
c. glycosidic
d. hydrogen
Answer: b
Textbook Reference: The Molecules of Cells
Bloom’s Category: 2. Understanding
Learning Objective: Contrast the structures of RNA and DNA.
13. The main difference between double-stranded DNA (dsDNA) and single-stranded
DNA (ssDNA) is that
a. dsDNA has bases that include thymine (T), while ssDNA has bases including uracil
(U).
b. dsDNA has strands oriented in an antiparallel fashion, while ssDNA does not.
, BIO 3020:ch 2 molecules and membranes EXAM
QUESTIONS WITH CORRECT ANSWERS TEXT
BAK
c. dsDNA cannot undergo translation while ssDNA can leave the nucleus to undergo
translation.
d. dsDNA has 5’ to 3’ polarity while ssDNA does not.
Answer: a
Textbook Reference: The Molecules of Cells
Bloom’s Category: 4. Analyzing
Learning Objective: Contrast the structures of RNA and DNA.
14. The most abundant molecules in cells are
a. proteins.
b. carbohydrates.
c. lipids.
d. water.
Answer: d
Textbook Reference: The Molecules of Cells
Bloom’s Category: 1. Remembering
Learning Objective: Explain the properties of different types of chemical bonds.
15. Water is an ideal solvent in cells because it
a. has low heat of vaporization.
b. is a polar molecule that can form hydrogen bonds with itself and with other polar
molecules.
c. dissolves nonpolar molecules.
d. contracts when it freezes.
Answer: b
Textbook Reference: The Molecules of Cells
Bloom’s Category: 2. Understanding
Learning Objective: Explain the properties of different types of chemical bonds.
16. In polysaccharides,
sugars are linked together by means of bonds.
a. phosphodiester
b. peptide
c. glycosidic
d. hydrophobic
Answer: c
Textbook Reference: The Molecules of Cells
Bloom’s Category: 1. Remembering
Learning Objective: Diagram the structure of a simple carbohydrate.
17. Sugars can cyclize if they contain or more
carbons.
© 2019 Sinauer Associates, Inc.
