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A & P Memmler's 12th
Chapter 2 Chemistry, Matter, and Life
| Term | Definition |
|---|---|
| Matter | The substances from which the universe is made. |
| Elements | All the different types of matter. |
| Carbon | Basis of all ogranic componds or human cells. |
| Calcium | Builds bones and teeth; needed for muscle contraction, nerve impulse conduction, and blood clotting. |
| Potassium | Active in nerve impulse conduction and muscle contraction. |
| Sodium | Active in water balance. |
| Iron | Part of hemoglobin and compound that carries oxygen in red blood cells. |
| Oxygen | Metabolizes nutrients for energy. |
| Phosphorus | Active ingredient in Adenosine Triphosphate (ATP) |
| Nucleus | The center of the atom and has protons and neutrons. |
| Electrons | Negatively charged subatomic particle. |
| Atoms | The smallest subunits of elements cannot be broken down or changed. |
| Ionic bonds | This is formed when one atom transfers electrons to another atom. |
| Electrolytes | Compounds that separate into ions in solution such as sodium chloride (salt). |
| Covalent Bonds | This is formed when two atoms share electrons. |
| Molecules | These are chemicals composed of two or more atoms held together with covalent bonds. |
| Compounds | These are chemicals composed of two or more different atoms held together by ionic or covalent bonds. |
| Solution | This is a mixture when a substance is dissolved in a solvent (liquid). Example: salt or sugar is dissolved in water. |
| Suspension | This is a mixture where the substance is dispersed in another, but will settle to the bottom, unless constantly mixed. Example: Milk of Magnesia or Amoxicillin. |
| Colloid | This is a mixture that remains evenly distributed. Example: Blood plasma. |
| Water | This substance is a universal solvent. |
| pH Scale | 7.35 - 7.45 |
| Monosaccharide | One sugar. Exp. Glucose |
| Disaccharide | Two sugar. Exp. Sucrose and lactose. |
| Polysaccharide | Many sugars. Exp. Glycogen and starch. |
| Triglyceride | This lipid insulates the body, protects organs, and stores energy. |
| Phospholipid | This lipid is the main componet of cell membranes. |
| Steroid | This helps regulate body function like sex hormones and cortisol. |
| Enzymes | Proteins that speed up chemical reactions. |
| Nucleotides | The building blocks of DNA and RNA. |
| Catabolism | Catabolic reactions break substances down and are used to form Adenosine Triphosphate (ATP). |
| Anabolism | Anabolic reactions build substances up and ofter require Adenosine Triphosphate to perform the reaction. |
| Dehydration | A decrease in body fluid volume. |
| Hypernatremia | Elevation or increase in blood sodium levels. |
| Hypotension | Low blood pressure |
| Hypertention | High blood pressure |
| Hyponatremia | Decrease in blood sodium levels. |
| Tachycardia | Incrased heart rate above 100 beats per minute. |
| Bradycardia | Decrease heart rate below 60 beats per minute. |
| Carbohydrates | Simple sugars or monosacchrides help buld this organic compound. |
| Lipids | This is a class of organic compounds that are not souluble in water. |
| Proteins | This is the body's structural materials found in muscle bone and connective tissue. |
| Glycogen | This is the storage form of glucose. |
| Amino acids | These monomers compose proteins. |
| Metabolism | All life-sustaining chemical reactions that occur within the body systems. |
| Protons | Positively charged subatomic particles. |
| Neurons | Non/not charged subatomic particles. |
| Base | A substance that releasees and accepts hydrogen ions and helps with buffering. |
| Acidosis | Body fluid pH less than 7.35 |
| Alkalosis | Body fluid pH greater than 7.45 |
| Buffers | Chemicals that prevent sharp changes in hydrogen concentration and is vital for maintaining a normal pH. |
| Hydrophobic | Water fearing |
| Hydrophalic | Water loving |