A process in which a membrane allows some molecules to pass through while keeping others out.
Selective Permeability
What's the definition of biology?
The Study of Life
A shared pair of electrons, a chemical bond that involves sharing a pair of electrons between atoms in a molecule
Covalent bond
Process that releases energy by breaking down glucose and other food molecules in the presence of oxygen
Cellular Respiration
Having cells that lack membrane-bound nuclei
Prokaryotic
A reaction that releases heat
Exothermic
A series of steps in which organisms transfer energy by eating and being eaten
Food Chain
A tiny cavity filled with fluid in the cytoplasm of a cell (plant cell)
Vacuole
Basic unit of matter
Atom
The basic structural and functional unit of all organisms
Cell
An organism that makes its own food
Producer
A part of the cell containing DNA and RNA and responsible for growth and reproduction
Nucleus
Main energy source that cells use for most of their work
ATP (Adenosine Triphosphate)
The site of protein synthesis in the cell
Ribosomes
A mixture in which substances are evenly distributed throughout the mixture
Homogeneous mixture