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What 3 ways can substances enter and leave a cell?
Substances can move in and out of a cell in several ways. Diffusion is when a substance will distribute itself in or out of a cell until the distribution on both sides of the cell is balanced. Active transport is when a cell transports a substance across the cell membrane that would not normally be able to pass through. Osmosis is the movement of water from areas with few dissolved dissolved substances to areas with high dissolved substances.
How are diffusion and facilitated diffusion similar?
Substances enter a cell through the cell membrane
Where diffusion occur?
Diffusion occurs on the cell membrane.
What is is called when vesicles are used to move substances out of the cell?
The process that requires transport vesicles to transfer material out of a cell is called exocytosis.
What cell part plays a role in diffusion?
The plasma membrane of a cell plays a role in diffusion.
What gas moves into or out of cell diffusion?
Oxygen and carbon dioxide move into and out of cells through diffusion. Oxygen diffuses into cells to be used in cellular respiration, while carbon dioxide diffuses out of cells as a waste product of this process.
How does osmosis and diffusion limit the size of a cell?
diffusion and osmosis limit the size of a cell by how fast is can move
What types of transport mechanisms through the cell membrane are passive?
diffusion, facilitated diffusion, and osmosis
How does diffusion help maintain homeostasis?
Diffusion allows the cell to passively transport the waste chemicals out side of the cell so that the cell is not harmed.
What used a protein to move a molecule across a cell membrane without energy?
Facilitated diffusion uses proteins to move a molecule across the cell membrane without energy.
What type of diffusion helps glucose enter the cell?
facilitated diffusion
What stops the cell process of diffusion?
What stops the process of diffusion in cells?
