Membrane Parts
The main structural component of the cell membrane is what molecule?
Phospholipid
The cell membrane does not let everything cross. This feature is referred to as _________________.
Selective Permeability
The Sodium-Potassium Pump is an example of which type of transport?
Active
In osmosis, water moves from an area of _______ water concentration to an area of ________ water concentration.
High / Low
These proteins allow ions to pass through the cell membrane.
Channel / Carrier Proteins
Short chains of __________ attach to proteins and lipids and act like a membrane "fingerprint."
When a solute moves down its' concentration gradient without the aid of energy, it is called ______________.
Passive Transport
Facilitated transport is used for molecules that cannot directly diffuse through the cell membrane. Give an example of what type of molecule would use this transport mechanism.
When there is an equal concentration of solutes inside and outside of the cell, the solution outside of the cell is considered to be ________.
Isotonic
These proteins have short sugar chains attached and are used for cell identification.
Cell Recognition Proteins
Name 1 of the two things that help keep the cell membrane fluid.
Cholesterol, Unsaturated Fatty Acids
What type of molecule can diffuse directly across the cell membrane?
Small and Non-Polar
What occurs when there is no net movement of molecules?
Equilibrium
Plant cells prefer to be in a state of turgor pressure, which occurs when the solution outside of plant cell is _____________.
Hypotonic
Receptor proteins bind to specific molecules called _______.
Ligands
The phosphate heads that line the internal and external surfaces of the cell membrane are considered to be ___________.
Polar / Hydrophilic
This type of transport moves molecules against their concentration gradient.
Active
A solution consists of which two things?
Solute and Solvent
Animal cells shrivel up (crenation) when water leaves the cell. This occurs when the solution outside of the cell is ____________.
Hypertonic
These proteins catalyze chemical reactions
Enzyme Proteins
What is the term used for proteins in the cell membrane that are only attached to the insider surface of the membrane?
Peripheral
Phagocytosis is an example of what type of transport mechanism?
Bulk Transport
Which type of transport is often referred to as "cellular drinking"?
Pinocytosis
This type of pressure can develop as a result of osmosis.
Osmotic Pressure
This protein fiber helps cells resist stretching forces.
Collagen