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Biology UNIT 1 Voc
AZCP Biology Unit 1 Vocabulary
| Term | Definition |
|---|---|
| Protons | Protons are positively charge Found in the nucleus of atoms |
| Neutrons | Neutrons are neutral Found in the nucleus of atoms |
| Electrons | Electrons are negatively charged Surround the nucleus |
| Compounds | Formed by two or more elements in definite proportions to create a new substance |
| atom | the basic unit of matter |
| nucleus | the center of an atom, which contains the protons and neutrons |
| element | pure substance that consists entirely of one type of atom found in each box of the periodic table |
| ion | atom that has a positive or negative charge |
| molecule | smallest unit of most compounds that displays all the properties of that compound |
| Hydrogen bond aka H-Bond | weak attraction between a slightly positive hydrogen atom and another atom that is slightly negative |
| cohesion | attraction of molecules of the same substance |
| adhesion | attraction between molecules of different substances |
| mixture | two or more elements or compounds physically mixed together, but not chemically combined |
| solution | type of mixture in which all the components are evenly distributed |
| solute | substance that is dissolved in a solution |
| solvent | dissolving substance in a solution ** greatest solvent on Earth is water |
| suspension | mixture of water and non-dissolved material |
| pH scale Power of Hydrogen scale | scale with values from 0 to 14, used to measure the concentration of H+ ions in a solution |
| acid | a compound that forms hydrogen ions (H+) in solution; a solution with a pH of less than 7 |
| base | a compound that produces hydroxide ions (OH-) in solution; a solution with a pH of more than 7 |
| buffer | compound that prevents sharp, sudden changes in pH |
| monomer | small chemical unit that makes up a polymer or a molecule that can be bonded to other identical molecules to form a polymer |
| polymer | molecules made up of many monomers makes up biomolecules a substance that has a molecular structure consisting chiefly or entirely of many similar units bonded together |
| carbohydrate is also known as | carbon-water molecule |
| monosaccharides | simple sugar |
| disaccharides | double sugar |
| polysaccharides aka glycan | many sugars |
| 4 polysaccharides | Glycogen Starch Cellulose Chitin |
| -sacchar- | sugar |
| prefix (-ose) informs us that | the term is a carbohydrate (sugar) |
| Carbohydrate definition | Member of the class of biological molecules consisting of simple single-monomer sugars (monosaccharides aka simple sugar), two-monomer sugars (disaccharides aka double sugar), and other multiunit sugars (polysaccharides aka glycan) |
| Lipid definition | organic compound consisting mainly of carbon and hydrogen atoms linked by nonpolar covalent bonds, making the compound mostly hydrophobic. Lipids include fats, phospholipids, and steroids and are insoluble in water. |
| Glycerol | an alcohol containing three hydroxyl groups (OH) |
| monoglyceride | glycerol head with 1 fatty acid chain |
| diglyceride | glycerol head with 2 fatty acid chain |
| triglyceride | glycerol head with 3 fatty acid chain |
| Saturated Fatty Acid | straight fatty acid chain(s) that ONLY have single C-C (carbon to carbon) bonds; maximum # of Hydrogen present |
| Unsaturated Fatty Acid | fatty acids that contain at least one C-C double or triple bond |
| Proteins | A functional biological molecule consisting of one or more polypeptides folded into a specific three-dimensional structure. |
| Peptide Bonds | bonds that hold together amino acids |
| Polypeptide | chains of the links amino acids formed by condensation |
| Condensation | removal of water molecule |
| Catalyze | Catalyze: cause or speed up a reaction |
| Amino acid | a simple organic compound containing the 2 functional groups: carboxyl (—COOH) and an amino (—NH2) group |
| enzymes | protein that speeds up/accelerates chemical reactions without themselves being changed in the process |
| Nucleic acids | A polymer consisting of many nucleotide monomers; serves as a blueprint for proteins and, through the actions of proteins, for all cellular structures and activities. |
| DNA | deoxyribonucleic acid |
| RNA | ribonucleic acid |
| Nucleotides | Nucleotides are the building blocks of nucleic acids organic monomer consisting of a five-carbon (pentose) sugar covalently bonded to a nitrogenous base and a phosphate group |
| Deoxyribose | pentose sugar for DNA |
| Ribose | pentose sugar for RNA |
| Thymine | nitrogenous base that is ONLY exists in DNA |
| Uracil | nitrogenous base that is ONLY exists in RNA |
| Other names for Biomolecules | Macromolecules Life's Molecule Organic Compounds Organic Chemicals Biological Molecules |
| Water | Polar molecule consisting of 2 hydrogen atoms and 1 oxygen atom greatest solvent on earth universal solvent |
| C | CARBON |
| H | HYDROGEN |
| O | OXYGEN |
| N | NITROGEN |
| P | PHOSPHORUS |