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Chapter 01: The Cell: A Microcosm of Life
oriented?
a outwardly, away from the cytoplasmic matrix
.
b. inwardly, toward the lumen
c. equally inwardly and outwardly to maintain symmetry
d. between the bilayers of the membranes
e. interlinked with each on both sides of the membrane
ANSWER: b
7. Which of the following describes proteins attached to the membrane through hydrophobic
interactions and embedded in the membrane?
a. peripheral proteins
b. rough endoplasmic reticula
c. integral proteins
d. Golgi apparatus
e. apoproteins
ANSWER: c
8. Which structure in the cell provides support and controls the movement of cell organelles?
a. endoplasmic reticulum
b. mitochondrion
c. cytoskeleton
d. cytosolic matrix
e. nucleus
ANSWER: c
9. Cytochalasin is a fungal toxin that prevents the polymerization of actin. Which cellular
structure is the target?
a. nucleus
b. cytoskeleton
c. lysosomes
d. mitochondria
e. plasma membrane
ANSWER: b
10. Which of the following is not normally found in the cytoplasmic matrix of a typical cell?
a. amino acids
b. glucose-6-phosphate
c. carbon dioxide
d. urea
e. lipids
ANSWER: d
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Chapter 01: The Cell: A Microcosm of Life
11. Enzymes of which metabolic pathway can be found in the cytoplasmic matrix?
a. beta-oxidation
b. glycolysis
c. ketone production
d. the Kreb’s cycle
e. cholesterol synthesis
ANSWER: b
12. Which organelle is responsible for the production of most of the metabolic energy (ATP)?
a. Golgi apparatus
b. endoplasmic reticulum
c. nucleus
d. mitochondrion
e. lysosome
ANSWER: d
13. Which of the following can freely diffuse across the inner mitochondrial membrane?
a. glucose
b. oxygen and carbon dioxide
c. fatty acids
d. NADH
e. protons
ANSWER: b
14. Where are the majority of the components of the electron transport chain embedded?
a. mitochondrial inner membrane
b. mitochondrial outer membrane
c. mitochondrial matrix
d. cytoplasmic matrix
e. plasma membrane
ANSWER: a
15. In which organelle do the TCA cycle and fatty acid oxidation occur?
a. Golgi apparatus
b. nucleus
c. microsomes
d. mitochondrion
e. endoplasmic reticulum
ANSWER: d
16. What is the major route for ATP production in the cell?
a. oxidative phosphorylation
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Chapter 01: The Cell: A Microcosm of Life
b. hydrolysis
c. peroxidation
d. transformation
e. substrate-level phosphorylation
ANSWER: a
17. Which organelle is capable of performing both fission and fusion?
a. Golgi apparatus
b. mitochondria
c. rough endoplasmic reticulum
d. nucleus
e. lysosome
ANSWER: b
18. What do the genes contained in the mitochondrial DNA code for?
a all proteins functioning within the mitochondrial matrix
b. nonfunctional ancient proteins considered remnants of evolution
c. proteins vital to the production of ATP
d. antioxidant proteins
e. immune proteins
ANSWER: c
19. Which cell organelle is responsible for the initiation and regulation of most cellular activity?
a. peroxisome
b. nucleus
c. mitochondrion
d. Golgi body
e. endoplasmic reticulum
ANSWER: b
20. In addition to the mitochondria, which organelle possesses an inner and outer membrane?
a. lysosome
b. peroxisome
c. Golgi apparatus
d. nucleus
e. endoplasmic reticulum
ANSWER: d
21. Microtubule organization centers (MTOCs) on the outer nuclear membrane are associated with
which cellular process?
a. oxidative phosphorylation
b. electron transport
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Chapter 01: The Cell: A Microcosm of Life
c. mitosis
d. protein synthesis
e. lipid synthesis
ANSWER: c
22. What information does the DNA in the nucleus contain?
a the entire genome for that organism
b. the genes coding for proteins needed only by that particular cell
c. chromatin
d. all components of the cytoskeleton
e. components of the electron transport chain
ANSWER: a
23. What is the DNA in the nucleus found wrapped around?
a. proteins called histones
b. the nucleolus
c. the nuclear envelope
d. ribosomal RNA
e. the inner membrane
ANSWER: a
24. What is the best description of transcription?
a the genetic information in a single strand of DNA is copied onto a specific sequence of
bases in a messenger RNA (mRNA) chain
b. genetic information in an mRNA molecule specifies the sequence of amino acids in the
protein product
c. amino acids are linked together to form the primary structure of a protein
d. the information of one DNA strand is copied onto another DNA strand
e. the primary structure of a protein is folded several times to become the quaternary
structure
ANSWER: a
25. What is the best description of translation?
a the genetic information (base sequence) in a single strand of DNA is used to specify a
complementary sequence of bases in an mRNA chain
b. a daughter duplex DNA molecule that is identical to the parental duplex DNA is
synthesized
c. the polypeptide chain is degraded
d. information in an mRNA molecule is used to build a sequence of amino acids to form
the protein product
e. mRNA strand is modified in the nucleus
ANSWER: d
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Chapter 01: The Cell: A Microcosm of Life
oriented?
a outwardly, away from the cytoplasmic matrix
.
b. inwardly, toward the lumen
c. equally inwardly and outwardly to maintain symmetry
d. between the bilayers of the membranes
e. interlinked with each on both sides of the membrane
ANSWER: b
7. Which of the following describes proteins attached to the membrane through hydrophobic
interactions and embedded in the membrane?
a. peripheral proteins
b. rough endoplasmic reticula
c. integral proteins
d. Golgi apparatus
e. apoproteins
ANSWER: c
8. Which structure in the cell provides support and controls the movement of cell organelles?
a. endoplasmic reticulum
b. mitochondrion
c. cytoskeleton
d. cytosolic matrix
e. nucleus
ANSWER: c
9. Cytochalasin is a fungal toxin that prevents the polymerization of actin. Which cellular
structure is the target?
a. nucleus
b. cytoskeleton
c. lysosomes
d. mitochondria
e. plasma membrane
ANSWER: b
10. Which of the following is not normally found in the cytoplasmic matrix of a typical cell?
a. amino acids
b. glucose-6-phosphate
c. carbon dioxide
d. urea
e. lipids
ANSWER: d
Page 2
,Name Clas Dat
: s: e:
Chapter 01: The Cell: A Microcosm of Life
11. Enzymes of which metabolic pathway can be found in the cytoplasmic matrix?
a. beta-oxidation
b. glycolysis
c. ketone production
d. the Kreb’s cycle
e. cholesterol synthesis
ANSWER: b
12. Which organelle is responsible for the production of most of the metabolic energy (ATP)?
a. Golgi apparatus
b. endoplasmic reticulum
c. nucleus
d. mitochondrion
e. lysosome
ANSWER: d
13. Which of the following can freely diffuse across the inner mitochondrial membrane?
a. glucose
b. oxygen and carbon dioxide
c. fatty acids
d. NADH
e. protons
ANSWER: b
14. Where are the majority of the components of the electron transport chain embedded?
a. mitochondrial inner membrane
b. mitochondrial outer membrane
c. mitochondrial matrix
d. cytoplasmic matrix
e. plasma membrane
ANSWER: a
15. In which organelle do the TCA cycle and fatty acid oxidation occur?
a. Golgi apparatus
b. nucleus
c. microsomes
d. mitochondrion
e. endoplasmic reticulum
ANSWER: d
16. What is the major route for ATP production in the cell?
a. oxidative phosphorylation
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Chapter 01: The Cell: A Microcosm of Life
b. hydrolysis
c. peroxidation
d. transformation
e. substrate-level phosphorylation
ANSWER: a
17. Which organelle is capable of performing both fission and fusion?
a. Golgi apparatus
b. mitochondria
c. rough endoplasmic reticulum
d. nucleus
e. lysosome
ANSWER: b
18. What do the genes contained in the mitochondrial DNA code for?
a all proteins functioning within the mitochondrial matrix
b. nonfunctional ancient proteins considered remnants of evolution
c. proteins vital to the production of ATP
d. antioxidant proteins
e. immune proteins
ANSWER: c
19. Which cell organelle is responsible for the initiation and regulation of most cellular activity?
a. peroxisome
b. nucleus
c. mitochondrion
d. Golgi body
e. endoplasmic reticulum
ANSWER: b
20. In addition to the mitochondria, which organelle possesses an inner and outer membrane?
a. lysosome
b. peroxisome
c. Golgi apparatus
d. nucleus
e. endoplasmic reticulum
ANSWER: d
21. Microtubule organization centers (MTOCs) on the outer nuclear membrane are associated with
which cellular process?
a. oxidative phosphorylation
b. electron transport
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Chapter 01: The Cell: A Microcosm of Life
c. mitosis
d. protein synthesis
e. lipid synthesis
ANSWER: c
22. What information does the DNA in the nucleus contain?
a the entire genome for that organism
b. the genes coding for proteins needed only by that particular cell
c. chromatin
d. all components of the cytoskeleton
e. components of the electron transport chain
ANSWER: a
23. What is the DNA in the nucleus found wrapped around?
a. proteins called histones
b. the nucleolus
c. the nuclear envelope
d. ribosomal RNA
e. the inner membrane
ANSWER: a
24. What is the best description of transcription?
a the genetic information in a single strand of DNA is copied onto a specific sequence of
bases in a messenger RNA (mRNA) chain
b. genetic information in an mRNA molecule specifies the sequence of amino acids in the
protein product
c. amino acids are linked together to form the primary structure of a protein
d. the information of one DNA strand is copied onto another DNA strand
e. the primary structure of a protein is folded several times to become the quaternary
structure
ANSWER: a
25. What is the best description of translation?
a the genetic information (base sequence) in a single strand of DNA is used to specify a
complementary sequence of bases in an mRNA chain
b. a daughter duplex DNA molecule that is identical to the parental duplex DNA is
synthesized
c. the polypeptide chain is degraded
d. information in an mRNA molecule is used to build a sequence of amino acids to form
the protein product
e. mRNA strand is modified in the nucleus
ANSWER: d
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