Cell Membrane and Transport Vocab

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Selectively Permeable

To allow only certain things through

Solution

A mixture made of very small particles that are very well mixed

Solute

The thing being dissolved

Cytosol

The liquid part of the cytoplasm

Equilibrium

Equal concentration through the entire solution

Homeostasis

A balance that works for the cell or organism

Passive Transport

The movement of an object into and out of the cell that does not require the cell to use energy; uses the natural tendency of molecules to move away from each other

Diffusion

The movement of particles from an area of high concentration to an area of low concentration

Osmosis

The movement of water molecules from an area of high concentration to an area of low concentration through a membrane

Facilitated Diffusion

Transport proteins allow molecules to diffuse across a membrane and does not use energy

Isotonic

Solution with the same concentration of solute and water than on the other side of the membrane

Hypertonic

The solution with more solute and less water than the solution on the other side of the membrane

Plasmolysis

The shriveling of cells due to being placed in a hypertonic solution

Hypotonic

A solution with less solute and more water than the solution on the other side of the membrane

Lysis

The bursing of animal cells due to being placed in a hypotonic solution

Turgor Pressure

Pressure exerted on the cell walls of a plant cell by the water stored in the central vacuole; goes up in a hypotonic solution

Concentration

How much solute is in the solution

Lipids

Structure and transport

Proteins

Transport and communication

Carbohydrates

Nametags

Concentration Gradient

In the same solution, there is a difference in concentration

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