2690092
Description
Flashcards by RatMixx2000, updated more than 1 year ago
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Created by RatMixx2000
over 9 years ago
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| Question | Answer |
| U3 Biology 2015 | U3 Biology 2015 |
| Unit 3: Diet & Digestion | |
| Topic 1. Balanced Diet | |
| What is the purpose of carbohydrates? | To provide energy. |
| What are the purposes of proteins? | Growth and repair |
| What is the purpose of fibre? | To keep food moving through the system. |
| What is the purpose of vitamins? | Keeps the body healthy |
| What is the purpose of minerals? | Keeps the body healthy |
| What are the purposes of fats? | Gives the body energy and warmth. |
| What is the purpose of water? | To hydrate the body |
| Topic 2: Investigating Foods | |
| What is the test for protein? | Add 5-10 drops of Biuret A to a test tube with a food mixed in 0.5cm depth water. Add 5-10 drops of Biuret B. |
| What is the test for fats? | Rub some food to a bit of paper. Hold to the light. |
| What is the test for glucose? | Add 5-10 drops of Benedict's solution to a test tube with your food, shaken with 0.5cm of water. Put the test tube into a hot water bath. |
| What is the test for starch? | Add 2-5 drops of iodine to the food. |
| What are the two groups of carbohydrates? | Sugar (glucose) and starch. |
| Where do you find natural sugars? | Fruits. |
| Diet & Nutrition | |
| What problems can added sugars cause? | Tooth decay. |
| Why are starchy carbohydrates good? | They give us lots of energy. |
| What are harmful fats known as? | Saturated fats. |
| What are the long term benefits of eating fibre? | Protection against heart problems and cancer. |
| What are the key minerals for teenagers? | Iron & Calcium |
| What proportion of the Human Body is water? | 2/3 (Brain, 80%) |
| What is the cause of scurvy? | Lack of Vitamin C |
| How can you prevent scurvy? | By eating fruits (citrus especially). |
| Topic 3. Teeth | |
| What are incisors and what are they for? | They cut the food. |
| What are canines and what are they for? | They rip the food, ready to grind. |
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