BSC2010 General Biology I
Study Guide Exam2
NAME_____________________________________________ Date______________
Study Guide Exam2
Chapter 6: Cell Energy
1. The fluid mosaic model describes the plasma membrane as consisting of
A) a phospholipid bilayer with embedded carbohydrates.
B) two layers of phospholipids with protein sandwiched between them.
C) a protein bilayer with embedded phospholipids.
D) carbohydrates, proteins, and phospholipids that can drift in the membrane.
E) individual proteins and phospholipids that can drift in a phospholipid bilayer.
2. Most of the functions of a cell membrane are performed by
A) glycolipids.
B) proteins.
C) phospholipids.
D) cholesterol.
E) nucleotides.
3. Plasma membranes are selectively permeable. This means that
A) anything can pass into or out of a cell as long as the membrane is intact and the cell is healthy.
B) the plasma membrane allows some substances to enter or leave a cell more easily than others.
C) glucose cannot enter the cell.
D) cholesterol cannot enter the cell.
E) plasma membranes must be very thick.
4. Oxygen crosses a plasma membrane by
A) osmosis.
B) phagocytosis.
C) active transport.
D) pinocytosis.
E) passive transport.
5. Diffusion does not require the cell to expend ATP. Therefore, diffusion is considered a type of
A) exocytosis.
B) phagocytosis.
C) passive transport.
D) active transport.
E) endocytosis.
6. Osmosis can be defined as
A) the diffusion of water.
B) the diffusion of nonpolar molecules.
C) active transport.
D) the diffusion of a solute.
E) endocytosis.
, BSC2010 General Biology I
Study Guide Exam2
7. A cell that neither gains nor loses water when it is immersed in a solution is
A) isotonic to its environment.
B) hypertonic to its environment.
C) hypotonic to its environment.
D) metabolically inactive.
E) dead.
8. Which of the following processes can move a solute against its concentration gradient?
A) osmosis
B) passive transport
C) diffusion
D) facilitated diffusion
E) active transport
9. Which of the following is a typical feature of an ATP-driven active transport mechanism?
A) The transport protein must cross to the correct side of the membrane before the solute can bind
to it.
B) The solute must be phosphorylated before it can bind to the transport protein.
C) The transport protein is irreversibly phosphorylated as transport takes place.
D) The transport protein catalyzes the conversion of ADP to ATP.
E) The solute moves against the concentration gradient.
10. The process of a white blood cell engulfing a bacterium is
A) osmosis.
B) diffusion.
C) receptor-mediated endocytosis.
D) pinocytosis.
E) phagocytosis.
11. Which of the following examples is classified as a metabolic pathway?
A) protein synthesis
B) osmosis
C) cell lysis
D) spontaneous combustions
E) passive diffusion
12. Which of the following most accurately describes selective permeability?
A) An input of energy is required for transport.
B) Lipid-soluble molecules pass through a membrane.
C) There must be a concentration gradient for molecules to pass through a membrane.
D) Only certain molecules can cross a cell membrane.
13. Which of the following would likely move through the lipid bilayer of a plasma membrane most
rapidly?
A) CO2
B) an amino acid
C) glucose
D) K+
, BSC2010 General Biology I
Study Guide Exam2
14. Which of the following allows water to move much faster across cell membranes?
A) the sodium-potassium pump
B) ATP
C) peripheral proteins
D) aquaporins
15. A sodium-potassium pump _____.
A) moves three potassium ions out of a cell and two sodium ions into a cell while producing an
ATP for each cycle
B) move three sodium ions out of a cell and two potassium ions into a cell while consuming an
ATP for each cycle
C) moves three potassium ions out of a cell and two sodium ions into a cell while consuming 2
ATP in each cycle
D) move three sodium ions out of a cell and two potassium ions into a cell and generates an ATP
in each cycle
16. The sodium-potassium pump is called an electrogenic pump because it _____.
A) pumps equal quantities of Na+ and K+ across the membrane
B) contributes to the membrane potential
C) ionizes sodium and potassium atoms
D) is used to drive the transport of other molecules against a concentration gradient
17. The voltage across a membrane is called the _____.
A) chemical gradient
B) membrane potential
C) osmotic potential
D) electrochemical gradient
18. Ions diffuse across membranes through specific ion channels down _____.
A) their chemical gradients
B) their concentration gradients
C) the electrical gradients
D) their electrochemical gradients
Chapter 7: Cellular Respiration and Fermentation
19. The term anaerobic means
A) without bacteria.
B) without ATP.
C) without CO2.
D) with O2.
E) without O2.
20. How do cells capture the energy released by cellular respiration?
A) They produce ATP.
B) They produce glucose.
C) They store it in molecules of carbon dioxide.
D) The energy is coupled to oxygen.
Study Guide Exam2
NAME_____________________________________________ Date______________
Study Guide Exam2
Chapter 6: Cell Energy
1. The fluid mosaic model describes the plasma membrane as consisting of
A) a phospholipid bilayer with embedded carbohydrates.
B) two layers of phospholipids with protein sandwiched between them.
C) a protein bilayer with embedded phospholipids.
D) carbohydrates, proteins, and phospholipids that can drift in the membrane.
E) individual proteins and phospholipids that can drift in a phospholipid bilayer.
2. Most of the functions of a cell membrane are performed by
A) glycolipids.
B) proteins.
C) phospholipids.
D) cholesterol.
E) nucleotides.
3. Plasma membranes are selectively permeable. This means that
A) anything can pass into or out of a cell as long as the membrane is intact and the cell is healthy.
B) the plasma membrane allows some substances to enter or leave a cell more easily than others.
C) glucose cannot enter the cell.
D) cholesterol cannot enter the cell.
E) plasma membranes must be very thick.
4. Oxygen crosses a plasma membrane by
A) osmosis.
B) phagocytosis.
C) active transport.
D) pinocytosis.
E) passive transport.
5. Diffusion does not require the cell to expend ATP. Therefore, diffusion is considered a type of
A) exocytosis.
B) phagocytosis.
C) passive transport.
D) active transport.
E) endocytosis.
6. Osmosis can be defined as
A) the diffusion of water.
B) the diffusion of nonpolar molecules.
C) active transport.
D) the diffusion of a solute.
E) endocytosis.
, BSC2010 General Biology I
Study Guide Exam2
7. A cell that neither gains nor loses water when it is immersed in a solution is
A) isotonic to its environment.
B) hypertonic to its environment.
C) hypotonic to its environment.
D) metabolically inactive.
E) dead.
8. Which of the following processes can move a solute against its concentration gradient?
A) osmosis
B) passive transport
C) diffusion
D) facilitated diffusion
E) active transport
9. Which of the following is a typical feature of an ATP-driven active transport mechanism?
A) The transport protein must cross to the correct side of the membrane before the solute can bind
to it.
B) The solute must be phosphorylated before it can bind to the transport protein.
C) The transport protein is irreversibly phosphorylated as transport takes place.
D) The transport protein catalyzes the conversion of ADP to ATP.
E) The solute moves against the concentration gradient.
10. The process of a white blood cell engulfing a bacterium is
A) osmosis.
B) diffusion.
C) receptor-mediated endocytosis.
D) pinocytosis.
E) phagocytosis.
11. Which of the following examples is classified as a metabolic pathway?
A) protein synthesis
B) osmosis
C) cell lysis
D) spontaneous combustions
E) passive diffusion
12. Which of the following most accurately describes selective permeability?
A) An input of energy is required for transport.
B) Lipid-soluble molecules pass through a membrane.
C) There must be a concentration gradient for molecules to pass through a membrane.
D) Only certain molecules can cross a cell membrane.
13. Which of the following would likely move through the lipid bilayer of a plasma membrane most
rapidly?
A) CO2
B) an amino acid
C) glucose
D) K+
, BSC2010 General Biology I
Study Guide Exam2
14. Which of the following allows water to move much faster across cell membranes?
A) the sodium-potassium pump
B) ATP
C) peripheral proteins
D) aquaporins
15. A sodium-potassium pump _____.
A) moves three potassium ions out of a cell and two sodium ions into a cell while producing an
ATP for each cycle
B) move three sodium ions out of a cell and two potassium ions into a cell while consuming an
ATP for each cycle
C) moves three potassium ions out of a cell and two sodium ions into a cell while consuming 2
ATP in each cycle
D) move three sodium ions out of a cell and two potassium ions into a cell and generates an ATP
in each cycle
16. The sodium-potassium pump is called an electrogenic pump because it _____.
A) pumps equal quantities of Na+ and K+ across the membrane
B) contributes to the membrane potential
C) ionizes sodium and potassium atoms
D) is used to drive the transport of other molecules against a concentration gradient
17. The voltage across a membrane is called the _____.
A) chemical gradient
B) membrane potential
C) osmotic potential
D) electrochemical gradient
18. Ions diffuse across membranes through specific ion channels down _____.
A) their chemical gradients
B) their concentration gradients
C) the electrical gradients
D) their electrochemical gradients
Chapter 7: Cellular Respiration and Fermentation
19. The term anaerobic means
A) without bacteria.
B) without ATP.
C) without CO2.
D) with O2.
E) without O2.
20. How do cells capture the energy released by cellular respiration?
A) They produce ATP.
B) They produce glucose.
C) They store it in molecules of carbon dioxide.
D) The energy is coupled to oxygen.
