Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
DB Ch2 Chemistry
Vocabulary for Ch 2 in Miller and Levine Biology
| Question | Answer |
|---|---|
| Atoms | Basic unit of matter. |
| Nucleus | Small, dense region within most nuclei in which the assembly of proteins begins. |
| Electron | Negatively charged particle |
| Element | Substance consisting entirely of one type of atom. |
| Isotope | Atom of an element that has a number of neutrons different from that of other atoms of the same element. |
| Compound | Substance formed by the chemical combination of two or more elements in definite proportions. |
| Ionic Bond | Bond formed when one or more electrons are transferred from one atom to another. |
| Ion | Atom that has a positive or negative charge. |
| Covalent bond | Bond formed by the sharing of electrons between atoms. |
| Molecule | Smallest unit of most compounds. |
| Van Der Waals Forces | A slight attraction that develops between the oppositely charged regions of nearby molecules. |
| Cohesion | attraction between molecules of the same substance |
| Adhesion | attraction between molecules of different substances; in plants, attraction between unlike molecules |
| Mixture | material composed of two or more elements or compounds that are physically mixed together but no chemically combined |
| Solution | mixture of two or more substances in which the molecules of the substance are evenly distributed |
| Solute | substance that is dissolved in a solvent to make a solution |
| Solvent | substance in which a solute is dissolved to form a solution |
| Suspension | mixture of water and nondissolved materials |
| pH scale | measurement system used to indicate the concentration of hydrogen ions (H+) in solution; ranges from 0 to 14 |
| acid | compound that forms hydrogen ions (H+) in solution |
| base | compound that produces hydroxide ions (OH+) in solution |
| buffer | weak acid or base that can react with strong acids or bases to help prevent sharp, sudden changes in pH |
| Monomer | small unit that can join together with other small units to form polymers |
| Polymer | large compound formed from combinations of many monomers |
| Carbohydrate | compound made up of carbon, hydrogen, and oxygen atoms; major source of energy for the human body |
| Monosaccharide | single sugar molecule |
| Polysaccharide | large macromolecule formed from monosaccharides |
| Lipids | macromolecule made mainly from carbon and hydrogen atoms; includes fats, oils, and waxes |
| Nucleic Acid | macromolecule containing hydrogen, oxygen, nitrogen, carbon, and phosphorus |
| Nucleotide | monomer of nucleic acids made up of a 5 |
| Ribonucleic Acid (RNA) | single-stranded nucleic acid that contains the sugar ribose |
| Deoxyribonucleic acid (DNA) | nucleic acid that contains the sugar deoxyribose |
| Protein | macromolecule that contains carbon, hydrogen, oxygen, and nitrogen; needed by the body for growth and repair and to make up enzymes |
| Amino Acid | compound with the amino group(-NH2)on one end and a carboxyl group(-COOH) on the other end |
| Chemical reaction | is a process that changes, or transforms, one set of chemicals into another. |
| Reactants | the elements or compounds that enter into a chemical reaction. |
| Products | the elements or compounds produced by a chemical reaction. |
| Activation energy | the energy that i needed to get a reaction started. |
| Catalyst | a substance that speeds up the rate of a chemical reaction. |
| Enzymes | proteins that act as biological catalysts. |
| Subtrates | the reactants of enzyme |
Created by:
ayemme
Popular Biology sets