Cell Membrane
A term used to describe the many components operating together that form the cell membrane
What is the fluid mosaic model?
Three biomolecules interspersed throughout the bilayer
What are cholesterols, carbohydrates, and proteins?
When a chemical substance moves from an area of high concentration to an area of low concentration
What is diffusion?
Something that is dissolved within a solvent to make a solution
What is a solute?
A process that living things use to maintain a stable internal environment optimal for survival
What is homeostasis?
A term that means some substances can pass through the cell membrane while others can not
What is semipermeable?
The biomolecules that have an important structural job in the cell membrane
What are cholesterol molecules?
The type of diffusion which allows oxygen and carbon dioxide to pass through the cell membrane
What is simple diffusion?
How glucose passes through the cell membrane?
What is facilitated diffusion?
A solution with an equal solute concentration
What is an isotonic solution?
The two layers of molecules the cell membrane is primarily composed of
What is the phospholipid bilayer?
The biomolecules responsible for helping to transport substances into and out of the cell
What are protein molecules?
Facilitated diffusion
What is the type of diffusion which requires the assistance of a transport protein?
The movement of water through the cell membrane
What is osmosis?
What is active transport?
The parts each phospholipid in the cell membrane contain
What is a phosphate head and a fatty lipid tail?
Proteins that sit on the cell membrane
What are peripheral proteins?
A solution with a lower solute concentration
What is a hypotonic solution?
A solution with a higher solute concentration
What is a hypertonic solution?
Proteins that act like channels and transport molecules that can not easily pass through the fatty inner layer of the bilayer
What are integral proteins?
Three traits of phospholipid heads
What are polar, electrically charged, and hydrophilic?
A trait of phospholipid fatty tails
What is hydrophobic?
How water passes through the cell membrane during osmosis
What is from areas of high water/low solute concentration to areas of low water/high solute concentration?
What passive transport can sometimes be described as
What is movement along the concentration gradient?
Biomolecules that help cells identify one another
What are chains of carbohydrates?