Cell Structure And Function Vocabulary Quiz 2 Flashcards
Organelle
Specialized structure that performs important cellular functions within a cell
Cell
Basic unit of all forms of life
Permeable
A membrane that is a substance is able to diffuse across
Selectively permeable membrane
Property of biological membranes that allows only certain substances to pass through them
Diffusion
Process by which molecules tend to move from an area of high concentration to an area of low concentrated
Osmosis
Diffusion of water through a selectively permeable membrane
Active transport
Energy requiring process that moves materials across a cell membrane against a concentration gradient
Phospholipid
The type of lipid that makes up cell membrane
Passive transport
The movement of molecules across a membrane without the use of energy
Concentration gradient
The difference in concentration of a substance across a membrane
Homeostatsis
Process by which organisms maintain a relatively stable internal environment
Isotonic solutions
When the concentration of the solute inside the cell is equal to that outside the cell
Hypotonic solutions
When the concentration of the solute is lesser inside the cell than outside the cell
Hypertonic solutions
When the solution inside the cell the cell has a greater concentration of solute than outside the cell
Prokaryotic
Single called organism that lacks a nucleus
