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Science7A test 1
on thurs.
| Term | Definition |
|---|---|
| Atom | the basic units of matter |
| Element | something made of one type of matter |
| Compound | are made when different elements bond together |
| Atomic Number | the number of protons of the nucleus in the atom |
| Atomic Mass | the average mass of atoms in the element |
| Organic Compounds | compounds that contain carbon and hydrogen |
| Inorganic Compounds | compounds that don't contain carbon and hydrogen together |
| Carbohydrates | elements-carbon, hydrogen, oxygen examples-sugar, starch, cellulose function-energy for cell processes building block-simple sugars |
| Lipid | elements-carbon,hydrogen,oxygen examples-fats,oils,waxes function-store and releases large amounts of energy, used to make cell membranes building blocks-fatty acids and glycerol |
| Protein | elements-carbon,hydrogen,oxygen,nitrogen examples-hair,skin,enzymes function-used to build cell parts building blocks-amino acids |
| Nucleic Acid | elements-carbon,hydrogen,and oxygen examples-fats,oils,waxes function-store and release large amounts of energy |
| Diffusion | the movement of molecules from areas of high concentration to areas of less concentration until it reaches the equilibrium |
| Osmosis | the diffusion of water through a membrane |
| Selective Permeability | The property of a membrane or other material that allows some substances to pass through it more easily than others. |
| Equilibrium | When molecules spread evenly |
| Passive Transport | the movement of materials across the cell membranes without the use of energy from high to low concentration |
| Active Transport | the movement of materials across the cell membrane from low to high concentrations using energy |
| Endocytosis | cell membrane surrounds large particles and bring them into the cell.(proteins do this.) |
| Exocytosis | large molecule are packaged in vesicles and remove from cell by fusing to the cell membrane(proteins do this.) |
| Proton | positively charges particle in the nucleus of the atom |
| Neutron | particle in the nucleus that has about the same mass as a proton but has no charge |
| Electron | negatively charged particle surrounding the nucleus of the atom |
Created by:
adrock79
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