Chapter 1 – The Cell: A Microcosm of Life
Multiple-Choice
Key Page(s)
a 2 1. Membrane lipid bilayers consist primarily of _____.
a. phospholipids
b. cholesterol
c. proteins
d. saturated fatty acids
b 2 2. Membrane proteins serve as all of the following EXCEPT _____.
a. pumps
b. detoxifiers
c. receptors
d. enzymes
b 4 3. What is the role of cholesterol in plasma membrane structure?
a. produce bile
b. regulate fluidity
c. reduce stability
d. produce hormones
a 2-3 4. Which of the following is NOT an attribute common to all
membranes?
a. Membranes are symmetrical.
, b. Membranes form sheet-like structures.
c. Membranes are fluid structures.
d. Membranes protect cellular components.
a 4 5. The carbohydrate moieties of the plasma membrane
glycoproteins and glycolipids are 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
c 4 6. Proteins attached to the membrane through hydrophobic
interactions and embedded in the membrane are called _____.
a. peripheral proteins
b. rough endoplasmic reticulum
c. integral proteins
d. Golgi apparatuses
c 4, 5 7. In the cell structure the _____ provides support and controls the
movement of cell organelles.
a. endoplasmic reticulum
b. mitochondrion
c. cytoskeleton
d. matrix space
,b 6 8. Enzymes of metabolic pathways that are associated with the
cytoplasmic matrix so that the product of one enzyme is released
in close proximity to the next enzyme for which it is a substrate
to facilitate velocity of the overall pathway include enzymes of
_____.
a. beta-oxidation
b. glycolysis
c. ketone production
d. the Krebs cycle
d 6 9. The organelle responsible for production of most of the
metabolic energy (ATP) is the _____.
a. Golgi apparatus
b. endoplasmic reticulum
c. nucleus
d. mitochondrion
a 7 10. All components of the electron transport chain are embedded in
the _____.
a. mitochondrial inner membrane
b. mitochondrial outer membrane
c. mitochondrial matrix
d. cytoplasmic matrix
d 7-8 11. In which organelle do the TCA cycle and fatty acid oxidation
occur?
a. Golgi apparatus
b. nucleus
c. microsomes
, d. mitochondrion
a 7 12. What is the major route for ATP production?
a. oxidative phosphorylation
b. hydrolysis
c. peroxidation
d. transformation
c 8 13. Genes contained in mitochondrial DNA are inherited only from
the mother and code for
a. all proteins functioning within the mitochondrial matrix.
b. non-functional ancient proteins considered remnants of
evolution.
c. proteins vital to the production of ATP.
d. antioxidant proteins.
d 8 14. What type of cell depends solely on energy produced through
anaerobic mechanisms?
a. hepatocyte
b. enterocyte
c. glucocyte
d. erythrocyte
Multiple-Choice
Key Page(s)
a 2 1. Membrane lipid bilayers consist primarily of _____.
a. phospholipids
b. cholesterol
c. proteins
d. saturated fatty acids
b 2 2. Membrane proteins serve as all of the following EXCEPT _____.
a. pumps
b. detoxifiers
c. receptors
d. enzymes
b 4 3. What is the role of cholesterol in plasma membrane structure?
a. produce bile
b. regulate fluidity
c. reduce stability
d. produce hormones
a 2-3 4. Which of the following is NOT an attribute common to all
membranes?
a. Membranes are symmetrical.
, b. Membranes form sheet-like structures.
c. Membranes are fluid structures.
d. Membranes protect cellular components.
a 4 5. The carbohydrate moieties of the plasma membrane
glycoproteins and glycolipids are 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
c 4 6. Proteins attached to the membrane through hydrophobic
interactions and embedded in the membrane are called _____.
a. peripheral proteins
b. rough endoplasmic reticulum
c. integral proteins
d. Golgi apparatuses
c 4, 5 7. In the cell structure the _____ provides support and controls the
movement of cell organelles.
a. endoplasmic reticulum
b. mitochondrion
c. cytoskeleton
d. matrix space
,b 6 8. Enzymes of metabolic pathways that are associated with the
cytoplasmic matrix so that the product of one enzyme is released
in close proximity to the next enzyme for which it is a substrate
to facilitate velocity of the overall pathway include enzymes of
_____.
a. beta-oxidation
b. glycolysis
c. ketone production
d. the Krebs cycle
d 6 9. The organelle responsible for production of most of the
metabolic energy (ATP) is the _____.
a. Golgi apparatus
b. endoplasmic reticulum
c. nucleus
d. mitochondrion
a 7 10. All components of the electron transport chain are embedded in
the _____.
a. mitochondrial inner membrane
b. mitochondrial outer membrane
c. mitochondrial matrix
d. cytoplasmic matrix
d 7-8 11. In which organelle do the TCA cycle and fatty acid oxidation
occur?
a. Golgi apparatus
b. nucleus
c. microsomes
, d. mitochondrion
a 7 12. What is the major route for ATP production?
a. oxidative phosphorylation
b. hydrolysis
c. peroxidation
d. transformation
c 8 13. Genes contained in mitochondrial DNA are inherited only from
the mother and code for
a. all proteins functioning within the mitochondrial matrix.
b. non-functional ancient proteins considered remnants of
evolution.
c. proteins vital to the production of ATP.
d. antioxidant proteins.
d 8 14. What type of cell depends solely on energy produced through
anaerobic mechanisms?
a. hepatocyte
b. enterocyte
c. glucocyte
d. erythrocyte
