Question | Answer |
Molecules | 2 or more atoms boned together
EX: H2O |
Compounds | Pure substances containing identical molecules |
Carbohydrates | Sugars,the body's first choice of energy.
Reacts with oxygen and releases energy. |
Lipids | Nutrients that don't dissolve in water, refered to as fats and oils |
Proteins | Made from building blocks called amino acids.
Temp. effects shape-shape effects function |
Nucleic acids | Molecules that carry info used to make proteins |
Solutions | A mixture that contains 1 or more chemicals that have been dissolved |
Solvent | Dissolves other chemicals
EX: water dissolves salt |
Solute | The material that gets dissolved |
Hypertonic | Higher concentration of solutes |
Hypotonic | Lower concentration of solutes |
Isotonic | Same concentration, different "stuff" |
PH | A way of measuring the concentration of hydrogen |
Acids | 0-6 on the PH scale |
Bases | 8-14 on the PH scale |
Cell | Basic unit of structure and function found in all living things |
Cell Membrane | Barrier between fluid inside and fluid outside the cell |
Receptors | Allow cell to recieve messages,
Binding site for chemical messages |
Pores/Channels | Passageway across the membrane, they can be controlled(opened and closed) |
Carriers | Proteins used to move things into the cell, they change shape |
Cytoplasm | The liquid between the cell membrane and the organelles (cell fluid) |
Osmosis | The movement of water from low concentration the high concentration across a semi-permeable membrane |
Na+/K+ pumps | Pumps K+ into the cell and pumps Na+ out of the cell |
Endocytosis | Moves things into the cell and packages them |
Pinocytosis | Takes in liquid |
Phagocytosis | Takes in a solid |
Exocytosis | Moving a vesicle outside the cell |
Differentation | When a stem cell changes into a specialized cell |