Ch. 11 - Biological Membranes and Transport WorksheetSee all chapters
All Chapters
Ch. 1 - Introduction to Biochemistry
Ch. 2 - Water
Ch. 3 - Amino Acids
Ch. 4 - Protein Structure
Ch. 5 - Protein Techniques
Ch. 6 - Enzymes and Enzyme Kinetics
Ch. 7 - Enzyme Inhibition and Regulation
Ch. 8 - Protein Function
Ch. 9 - Carbohydrates
Ch. 10 - Lipids
Ch. 11 - Biological Membranes and Transport
Ch. 12 - Biosignaling
Clutch Review 1: Nucleic Acids, Lipids, & Membranes
Clutch Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway
Clutch Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism
Clutch Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation
Biological Membrane Transport
Passive vs. Active Transport
Passive Membrane Transport
Facilitated Diffusion
Erythrocyte Facilitated Transporter Models
Membrane Transport of Ions
Primary Active Membrane Transport
Sodium-Potassium Ion Pump
SERCA: Calcium Ion Pump
ABC Transporters
Secondary Active Membrane Transport
Glucose Active Symporter Model
Endocytosis & Exocytosis
Neurotransmitter Release
Summary of Membrane Transport
Thermodynamics of Membrane Diffusion: Uncharged Molecule
Thermodynamics of Membrane Diffusion: Charged Ion

Concept #1: Erythrocyte Glucose Uniporter (GLUT1)

Practice: Glucose transport into erythrocytes (not into intestinal epithelial cells) is an example of:

Practice: Which of the following correctly ranks the steps of erythrocyte glucose transport by GLUT1?

I. A conformational change exposes glucose to the opposite site of the membrane.
II. Glucose binds to the transporter on one side of the membrane.
III. The GLUT1 transporter reverts back to its initial conformation.
IV. The glucose molecule has a weakened affinity to GLUT1 and dissociates from the transporter.

Concept #2: Erythrocyte Cl–/HCO3– Antiporter

Concept #3: How Does the Chloride-Shift Work?

Practice: What is the chloride shift?

Practice: The Chloride-Shift occurs when:

Practice: Which of the following statements is FALSE concerning the chloride-bicarbonate exchanger?

Practice: In the "chloride shift” diagrams below, label each scenario (A & B) as occurring in either the tissues or lungs: