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Ch. 5 - Membrane DynamicsWorksheetSee all chapters
All Chapters
Ch. 1 - Introduction to Physiology
Ch. 2 - Molecules and Molecular Interactions
Ch. 3 - Cells and Tissues
Ch. 4 - Cell Metabolism: Bioenergetics, Enzymes, and Respiration
Ch. 5 - Membrane Dynamics
Ch. 6 - Cell Communication
Ch. 7 - Integumentary System
Ch. 8 - Bone and Cartilage
Ch. 9 - Skeletal System
Ch. 10 - Joints
Ch. 11 - Muscles
Ch. 12 - The Nervous System I: Neurons and Neuronal Networks
Ch. 13 - The Nervous System II: The Central Nervous System
Ch. 14 - The Autonomic Nervous System
Ch. 15 - Sensory Physiology
Ch. 16 - The Endocrine System
Ch. 17 - Cardiovascular Physiology I: The Heart
Ch. 18 - Cardiovascular Physiology II: Blood, Blood Vessels, Circulation, and Exchange
Ch. 19 - The Urinary System
Ch. 20 - Respiratory Physiology
Ch. 21 - Acid-Base Balance-- Controlling Blood pH
Ch. 22 - Introduction to the Immune System
Ch. 23 The Lymphatic System
Ch. 23 - The Digestive System
Ch. 24 - Regulation of Metabolism and Energy Balance
Ch. 25 - Human Sexual Reproduction and Development

Concept #1: Protein Transport

Concept #2: Carrier Proteins and Facilitated Diffusion

Concept #3: Active Transport

Concept #4: Secondary Active Transport

Practice: A transporter moves Na+, K+, and Cl- into the cell. What type of protein-mediated transport does this channel perform? (Hint: [Na+] is higher outside the cell, [K+] and [Cl- ] are higher inside the cell).

Practice: Nicotinic acetylcholine receptors (nAchRs) are inserted in the membranes of skeletal muscle fibers. When they bind to acetylcholine, a channel within them opens and allows Na+ and K+ to cross the skeletal muscle cell membrane. Which of the following describes the category into which nAchRs fit?

Practice: Parietal cells of the stomach express H+/K+ ATPase proteins. These proteins use energy from the hydrolysis of ATP to pump one H+ out of the cell into the stomach while, at the same time, bringing one K+ from the stomach into the cell. Which of the following accurately describes this type of transport?