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Cellular Transport

QuestionAnswer
When the particles of one substance are uniformly distributed in another substance. Solution
A substance that can dissolve another substance. Solvent
A substance that is dissolved in a solvent. Solute
The constant random movement of molecules is called ____________. Brownian movement
The process by which molecules of a substnce move from areas of higher concentration to areas of lower concentrations. Diffusion
The diffusion of water is called ______. Osmosis
A membrane that allows only certain substances pass through it is called ______________. Selectively permeable
The difference in the concentration of molecules from the highest concentration to the lowest concentration is called a ________. Concentration gradient
Three Factors that Affect Diffusion Rates 1. Concentration2. Temperature3. Pressure
The cell membrane is composed of ____________. 1. Two layers of phospholipids2. Proteins3. Cholesterol4. Carbohydrate chains
The fact that lipids are fluid and allow proteins to move within the lipid bilayers is called the ___________. Fluid Mosaic Model
Water makes up how much of a living cell? 70% - 90%
When concentration of solutes outside of the cell is the same as the inside of the cell it is called a(n) ___________. Isotonic solution
When concentration of solutes outside of the cell is the lower than the inside of the cell it is called a(n) ___________. Hypotonic Solution
When concentration of solutes outside of the cell is greater than the inside of the cell it is called a(n) ___________. Hypertonic Solution
Means of transport across a cell membrane that does not require energy are called _________. Passive transports
Proteins in the cell membrane that transport large molecules or molecules that cannot dissolve in the lipids of the cell membrane. Carrier Proteins
Substances move with the concentration gradient from high to low, but carrier molecules speed up the movement of diffusing substances. Requires NO energy. Facilitated Diffusion
The movement of materials against the concentration gradient from low to high concentrations. Requires energy. Active Transport
Transport of materials that cannot move in and out across the membrane with or without the aid of transport proteins. Bulk Transport
Type of bulk transport of substances into the cell by creating a vesicle. Endocytosis
Type of bulk transport that moves solids into a cell. Amoebas use this method taking in food. Phagocytosis
Type of bulk transport of substances out of the cell using a vesicle. Exocytosis
Created by: lsanflo
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