Back to FlashcardsAnatomy and Physiology / Anatomy & Physiology Lec & Lab : Study Guide Group 4
Anatomy & Physiology Lec & Lab : Study Guide Group 4
This deck covers key concepts related to membrane transport mechanisms, including osmosis, types of solutions, and active/passive transport processes.
Osmosis is
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Key Terms
Term
Definition
Osmosis is
The diffusion of water across a semipermeable membrane
Hypotonic
Solution with a lower concentration; Water molecules tend to diffuse out; Cell with Swell
Hypertonic
Solution with a higher concentration; Water Molecules diffuse in; Cell Shrinks
Isotonic
Solutes are about the same; No net movement of water
Passive Membrane Transport
The movement of substances across the membrane without the expenditure of energy
Uses Kinetic Energy
Active Membrane Transport
The movement of substances across a membrane withing energy from ATP
*Usually with the help of proteins and against concentration gradient
Related Flashcard Decks
| Term | Definition |
|---|---|
Osmosis is | The diffusion of water across a semipermeable membrane |
Hypotonic | Solution with a lower concentration; Water molecules tend to diffuse out; Cell with Swell |
Hypertonic | Solution with a higher concentration; Water Molecules diffuse in; Cell Shrinks |
Isotonic | Solutes are about the same; No net movement of water |
Passive Membrane Transport | The movement of substances across the membrane without the expenditure of energy
Uses Kinetic Energy |
Active Membrane Transport | The movement of substances across a membrane withing energy from ATP
*Usually with the help of proteins and against concentration gradient |
Substances that require Carrier Proteins | Glucose….Glucose transporter; Some Ions……Channel proteins; Molecules…….Transport proteins |
Ion Pump | Transmembrane protein that moves ions across a plasma membrane against their concentration gradient |
Sodium Potassium pump | 3 sodium ions are pumped out of the cell; 2 Potassium ions are pumped into the cell |
Exocytosis | The process of a cell exporting material using vesicular transport |
Endocytosis | The process of a cell ingesting material by enveloping it in a portion of its cell membrane |
Phospholipids relationship to water | Hydophilic Head; Hydrophobic Tails; Head Face out, Tails face in |