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CH 2 cell test
Question | Answer |
---|---|
What is a carbohydrate? | One or more sugar molecules |
What is the cell theory? | living things are made of one or more cells; the cell is the smallest unit of life; new cells come from preexisting cells |
What is a lipid? | a large macromolecule that does not dissolve in water |
What is a macromolecule? | a substance that forms by joining many small molecules |
nucleic acid | macromolecule that forms when a long chain of nucleotides joins together |
protein | long chain of amino acid molecules |
theory | explanation based on scientific knowledge resulting from several observations and experiments |
cell membrane | protects the inside of a cell from the environment |
cell wall | stiff structure outside the cell membrane |
chloroplast | membrane-bound organelle that uses light energy and makes food |
cytoplasm | fluid inside a cell that contains salts and other molecules |
cytoskeleton | network of threadlike proteins inside a cell |
envelope | outer covering |
function | purpose for which something is used |
nucleus | directs all cell activities and contains DNA |
organelle | membrane-bound cell structure with a specialized function |