Cell Transport Flashcards
Cell Transport:
1. Does not require energy
2. Substances move from an area of higher concentration to an area of lower concentration.
Passive Transport
Cell Transport:
1. Substances move directly from an area of higher concentration to an area of lower concentration.
Diffusion
Cell Transport:
1. Materials diffuse from an area of higher concentration to an area lower concentration with the help of membrane proteins.
2. Occurs only in the direction of the concentration gradient.
Facilitated Transport
Cell Transport:
1. Diffusion of solvent (water) across the cell membrane from an area of higher concentration to an area of lower concentration.
Osmosis
Cell Transport:
Types of Solutions in Osmosis
- Hypotonic
- Hypertonic
- Isotonic
Cell Transport:
1. Water is transported into the cell, causing it to inflate and eventually burst.
Hypotonic
Cell Transport:
1. Water is transported outside the cell, causing it to shrink.
Hypertonic
Cell Transport:
1. The amount of water transported into the cell equals the amount of water transported out from the cell.
Isotonic
Cell Transport:
1. Requires the use of energy in the form of ATP.
2. Molecules move from an area of lower concentration to an area of higher concentration.
Active Transport
Cell Transport:
1. Uses membrane proteins to directly move molecules from an area of lower concentration to an area of higher concentration.
Primary Active Transport
Cell Transport:
1. Uses electrochemical gradient to move one or two molecules at once
Secondary Active Transport
Cell Transport:
Types of Ports in Secondary Active Transport
- Symporter
- Antiporter
- Uniporter
Movement of large molecules into or out of the cell by the way of vesicles.
Bulk Transport
Two Types of Bulk Tranport
Exocytosis and Endocytosis
Cell Transport:
Type of Bulk Transport:
1. Expels material from the cell into the extracellular space.
Exocytosis
Cell Transport:
Types of Bulk Transport:
1. Cells take in substance from outside the cell by engulfing them in a vesicle.
Endocytosis
Cell Transport:
Types of Bulk Transport:
Types of Endocytosis:
1. Cell-eating
2. Process by which large particles are taken in by a cell.
Phagocytosis
Cell Transport:
Types of Bulk Transport:
Three Types of Endocytosis
- Phagocytosis
- Pinocytosis
- Receptor-Mediated Endocytosis
Cell Transport:
Types of Bulk Transport:
Types of Endocytosis:
1. Cell-drinking
2. Process of taking molecules such as water into the cell
Pinocytosis
Cell Transport:
Types of Bulk Transport:
Types of Endocytosis:
1. Contains receptor proteins used to engulf specific molecules
Receptor-Mediated Endocytosis
Cell Transport:
Membrane Proteins:
1. Membrane proteins that are always open to transport molecules.
Channel Proteins
Cell Transport:
Membrane Proteins:
1. Membrane proteins that can be opened or closed to allow molecules to pass.
Gated-Channel Proteins
Cell Transport:
Membrane Proteins:
1. Membrane proteins that undergoes a change in their structure to transport molecules.
Carrier Proteins
Cell Transport:
Secondary Active Transport:
Ports:
1. Substrates move in the same direction.
Symporter
Cell Transport:
Secondary Active Transport:
Ports:
1. Substrates move in different directions.
Antiporter
Cell Transport:
Secondary Active Transport:
Ports:
1. A single-substrate move across the cell membrane.
Uniporter