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Description
Flashcards by Zita Wormuth, updated more than 1 year ago
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Created by Zita Wormuth
over 6 years ago
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| Question | Answer |
| What is metabolism? | All the chemical reactions that place in cells |
| Metabolism is made up of 2 types of chemical reactions - what are they? | 1. Catabolism 2. Anabolism |
| What is catabolism? | Where large molecules are broken down to smaller ones |
| What is anabolism? | Where small molecules are built up into larger ones |
| What are some examples of organic compounds? | Carbohydrates, amino acids, proteins, lipids and nucleic acids |
| What are some examples of inorganic compounds? | Water, oxygen, carbon dioxide and minerals. Because they don't contain carbon - if they do, only a small amount |
| What are enzymes? | Proteins that allow chemical reactions to take place at normal body temperature |
| What is activation energy? | The energy needed to get a chemical reaction started |
| What is a substrate? | The molecules on which an enzyme acts |
| What is the active site? | The part of an enzyme molecule that combines with the substrate |
| What is the enzyme-substrate complex? | When the enzyme and substrate have combined |
| List the 7 factors that affect enzyme activity | 1. Concentration of enzyme (Higher=fast) 2. Concentration of substrate 3. Products of reaction must be removed 4. Temperature 5. pH level 6. Co-factors & co-enzymes 7. Enzyme inhibitors |
| What is the formula for cellular respiration? | |
| How is adenosine diphosphate created? | By removing a phosphate molecule from adenosine triphosphate |
| Does anaerobic respiration require oxygen? | No |
| Does aerobic respiration require oxygen? | Yes |
| List the 7 uses of energy for the cell | 1. Movement of the cell 2. Movement of Organelles 3. Building complex molecules 4. Cell division and growth 5. Maintaining cell organisation 6. Active transport 7. Transmission of nerve impulses |
| What is synthesis? | The combining of small molecules to make larger ones |
| What is a nutrient? | Any substance in our food used for growth, repair or maintenance |
| What is the use of water in cell metabolism? | Water is the substance that substances are dissolved in during metabolism |
| What is the use of carbohydrates in cell metabolism? | They are the main source of energy for cells and their are broken down to release energy |
| What is the use of lipids in cell metabolism? | Also an energy source |
| What is the use of proteins in cell metabolism? | Proteins break down into amino acids which can create new proteins like enzymes |
| What is the use of minerals in cell metabolism? | Function as co-factors or are apart of ATP |
| What is the use of vitamins in cell metabolism? | Act as co-enzymes |
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