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BIO Unit 2
| Question | Answer |
|---|---|
| Protons | positive charge, in the nucleus |
| Neutrons | neutral charge, in the nucleus, so protons will repel when too close to electrons |
| Electrons | negative charge, in the cloud |
| Finding Protons | the number of protons is the atomic number |
| Finding Neutrons | Mass number minus the atomic number |
| Finding Electrons | The number of electrons equals the number of protons |
| Finding Atomic Mass | protons plus neutrons |
| Covalent Bond | a type of chemical bond formed when two nonmetal atoms share one or more pairs of electrons |
| Ionic Bond | a type of chemical bond formed through the electrostatic attraction between oppositely charged ions created by the complete transfer of electrons from a metal to a nonmetal |
| Hydrogen Bond | A hydrogen bond is a strong type of dipole-dipole attraction between a partially positive hydrogen atom attached to a highly electronegative atom (like nitrogen, oxygen, or fluorine) and another nearby electronegative atom |
| Adhesion | the U shape when you put water into a graduated cylinder |
| Water | polar, its shape makes it polar, the electrons sit around oxygen |
| Solvent | water, something that dissolves another substance |
| Solute | sugar, the substance that gets dissolved to create a solution |
| Monomer | small molecule that can join together with other similar molecules to form a larger chain |
| Polymer | a large molecule made of many smaller, repeating units called monomers bonded together in long chains |
| Number of electrons in a single bond | 2 |
| Number of electrons in a double bond | 4 |
| Number of electrons in a triple bond | 6 |
| A modified nucleotide that is used as an energy molecule | ATP |
| Healthy Fats go to | Phospholipid bilayer, which is made out of healthy fats |
| Saturated Fat | a type of dietary fat with single bonds between carbon atoms that are typically solid at room temperature |
| Unsaturated Fat | a healthy dietary fat that remains liquid at room temperature because it contains one or more double chemical bonds |
| Carbohydrate | A molecule made of sugars that is one of the body’s main sources of quick energy. Examples include glucose, starch, and glycogen. |
| Protein | A molecule made of amino acids. Proteins help build and repair tissues and can act as enzymes and hormones. |
| Lipid | A group of molecules that includes fats and oils. Lipids store long-term energy, protect organs, and are important parts of cell membranes. |
| Nucleic acid | A molecule that stores and passes on genetic information. DNA and RNA are nucleic acids. |
| Glycerol | A small molecule that forms the backbone of fats (triglycerides). It attaches to fatty acids. |
| Unsaturated triglyceride | A fat contains one or more double bonds in its fatty acid chains. It is usually liquid at room temperature, like many plant oils. |
| Saturated triglyceride | A fat with no double bonds in its fatty acid chains. It is often solid at room temperature, like butter. |
| Nucleotide | The building block of DNA and RNA. It contains a sugar, phosphate group, and nitrogen-containing base. |
| Carboxyl | A functional group written as –COOH. It is found in fatty acids and amino acids and can act as an acid. |
| Hydroxyl | A functional group written as –OH. It is found in molecules such as sugars and alcohols. |
| Phosphate | A functional group containing phosphorus and oxygen. It is important in DNA, RNA, ATP, and energy transfer. |
| ATP | The cell’s main energy-carrying molecule. Cells use ATP to power many activities. |
| Amino | A functional group written as –NH₂. It is one of the important parts of an amino acid. |
| Dehydration Synthesis | A reaction that joins smaller molecules together to make a larger molecule by removing water. |
| Hydrolysis | A reaction that breaks a larger molecule into smaller molecules by adding water. |
| Carbohydrate Storage Molecules | Starch, Cellulose, Glycogen |