Types of Cell Transport Flashcards

Study Notes

Types of Cell Transport

Osmosis: Movement of water molecules through a semipermeable membrane, transitioning from a region of higher water concentration to lower.
Diffusion: Process of molecules (excluding water) moving from an area of higher concentration to one of lower concentration, driven by concentration gradients.
Facilitated Diffusion: A passive transport mechanism where specific proteins assist the movement of sugars and amino acids in and out of the cell via protein channels.
Passive Transport: General category of cellular transport not requiring energy, where substances move from areas of higher concentration to lower concentration.
Active Transport: This process necessitates energy expenditure by the cell to transport molecules from lower to higher concentration areas.
Carrier Protein Pump: A protein that utilizes ATP energy to actively transport particles from a region of low concentration to high concentration outside the cell.
Endocytosis: An energy-dependent process in which cells use vesicles to transport large particles into themselves.
Phagocytosis: A subtype of endocytosis where cells ingest solid particles, encapsulating them in vesicles, requiring energy for the process.
Pinocytosis: Another subtype of endocytosis focused on the ingestion of liquid substances into the cell through vesicle formation, also requiring energy.
Exocytosis: An active transport mechanism that involves the expulsion of waste or toxins from the cell using vesicles.
Hypotonic Solution: A solution with a lower solute concentration (e.g., salt) and higher water concentration, causing cells to swell or plump up.
Hypertonic Solution: Contains a higher solute concentration and lower water concentration, leading to the shrinkage of cells due to water loss.
Isotonic Solution: A state where solute (salt) and water concentrations are equal, resulting in no net movement of water into or out of cells.

Description

Explore the fundamental mechanisms of cell transport with these flashcards. Learn about osmosis, diffusion, and facilitated diffusion, including their definitions and processes. This resource is perfect for students diving into biology or life sciences.