Types of Transport
The two main types of cell transport
What are passive and active transport?
The process where molecules move from high to low concentration.
What is diffusion?
The type of transport that requires energy.
What is active transport?
Another name for the cell membrane.
What is the plasma membrane?
The movement of water across a semipermeable membrane.
What is osmosis?
The type of transport that does not require energy.
What is passive transport?
The type of diffusion that involves the help of transport proteins.
What is facilitated diffusion?
The process in which the cell engulfs large particles.
What is endocytosis?
The two main components of the phospholipid bilayer.
What are phosphate heads and lipid tails?
The environment in which water concentration is equal inside and outside of a cell.
What is isotonic?
The type of transport that moves substances against the concentration gradient.
What is active transport?
The three types of passive transport.
What are simple diffusion, facilitated diffusion, and osmosis?
The main difference between endocytosis and exocytosis.
What is endocytosis moves substances into the cell, while exocytosis expels substances out of the cell?
The part of the phospholipid that is attracted to water.
What is the polar phosphate head?
What happens to a cell in a hypertonic solution.
What is it shrinks as water leaves the cell?
The energy molecule used in active transport.
What is ATP (adenosine triphosphate)?
The mechanism that causes molecules to move randomly in passive transport.
What is Brownian movement?
The ion transported into the cell by the sodium-potassium pump.
What is potassium?
The model that describes the structure of the cell membrane.
What is the fluid mosaic model?
The reason why drinking salt water is harmful.
What is it creates a hypertonic environment, causing cells to dehydrate and shrink?
An example of active transport.
What is the sodium-potassium pump, endocytosis, or exocytosis?
The reason transport proteins are needed for some types of passive transport.
What is to help polar molecules and ions pass through the nonpolar center of the cell membrane?
The reason the sodium-potassium pump is essential for nerve cell function.
What is generating electrical signals by maintaining a concentration gradient of sodium and potassium ions?
The three types of proteins found in the cell membrane.
What are transport proteins, marker proteins, and receptor proteins?
The protein that assists in water transport across the cell membrane.
What are aquaporins?