Cell Vocab

Question Answer
A microscopic prokaryote bacterium
Smallest unit of life cell
a flexible covering that protects the inside of the cell from the environment outside the cell cell membrane
the theory that states that all living things are made of one or more cells, the cell is the smallest unit of life, and all new cells come from pre-existing cells cell theory
a stiff structure outside the cell membrane that protects a cell from attack by viruses and other harmful organisms cell wall
a membrane-bound organelle that uses light energy and makes food – a sugar called glucose – from water and carbon dioxide in a process known as photosynthesis chloroplast
the liquid part of a cell inside the cell membrane; contains salt and other molecules cytoplasm
a large macromolecule that does not dissolve in water lipid
substance in cells that forms when many small molecules join together macromolecule
a macromolecule that forms when long molecules called nucleotides join together nucleic acids
part of a eukaryote cell that directs cell activity and contains genetic information stored in DNA nucleus
membrane-surrounded compartment of a eukaryote cell with a specialized function organelle
a series of chemical reactions that convert the energy and food molecules into a uesable form of energy called ATP cellular respiration
a process by which glucose, a sugar, is broken down into smaller molecules glycolysis
a series of chemical reactions that convert light energy, water, and carbon dioxide into the food energy molecule glucose and give off oxygen photosynthesis