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7th and 8th Grade Chapter 2 Vocab

A macromolecule made up of one or more sugar molecules.
The part of a eukaryotic cell that directs cell activities and contains genetic information stored in DNA.
Membrane-bound organelles that use light and energy to make food-a sugar called glucose-from water and carbon dioxide in a process known as photosynthesis.
The process during which a cell takes in a substance by surrounding it with the cell membrane.
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 existing cells.
When molecules pass through a cell membrane using special proteins called transport proteins.
The movement of substances through a cell membrane without using the cell's energy.
A large macromolecule that does not dissolve in water.
Fluid inside a cell that contains salts and other molecules.
Formed by joining small molecules together.
The movement of substances from an area of higher concentration to an area of lower concentration.
A stiff structure outside the cell membrane.
The diffusion of water molecules only through a membrane.
The process during which a cell's vesicles release their contents outside the cell.
Long chains of amino acid molecules.
The movement of any substances through a cell membrane only by using the cell's energy.
A series of chemical reactions that convert light energy, water and CO2 into the food-energy molecule glucose and give off oxygen.
A reaction that eukaryotic and prokaryotic cells can use to obtain energy from food when oxygen levels are low.
Macromolecules that form when long chains of molecules called nucleotides join together.
A series of chemical reactions that convert the energy in food molecules into a usable form of energy called ATP.
A network of threadlike proteins that are joined together.
A flexible covering that protects the inside of a cell from the environment outside the cell.
A process by which glucose, a sugar, is broken down into smaller molecules.
Have specialized function, and are usually surrounded by membranes.