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Anatomy & Physiology Lec & Lab : Study Guide Group 4

Anatomy and Physiology12 CardsCreated 3 months ago

This deck covers key concepts related to membrane transport mechanisms, including osmosis, types of solutions, and active/passive transport processes.

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Osmosis is

The diffusion of water across a semipermeable membrane
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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
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Anatomy & Physiology Lec & Lab : Study Guide Group 4
TermDefinition
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