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| Question | Answer |
| What does the word symptoms mean? | The affect the microbes have on your body. |
| A doctor observes symptoms to come up with a…? | Diagnosis |
| 16. How can microbes be spread? | 16. By air, water, touch, food, animals and sex. |
| List a few ways in which diseases can be stopped from spreading. | • Making sure sewage is treated and disposed of properly • Adding chlorine to water to kill bacteria • Drying, freezing or refrigerating foods • Pasteurising milk • Using disinfectants, antiseptics and soaps • Immunising people with vaccines |
| Your body has……………to stop microbes getting in? | Natural defenses |
| Give some examples of natural defenses. | Skin, mucus in the trachea and nose, ciliated epithelial cells to sweep mucus away |
| List ways in which your body can destroy microbes. | • A chemical in tears that kills some bacteria • Acid in the stomach that kills some bacteria • White blood cells that engulf microbes • Other white blood cells that make antibodies to help destroy microbes. |
| How does breast milk help babies to fight infections? | Antibodies can pass through the placenta that is found in breast milk. |
| 22. What do antibiotics do? | 22. Cure some diseases. |
| Using too much antibiotics can do what? | Leaves behind the resistant bacteria, which then cause disease that are difficult to treat. |
| What is a micro-organism? | A very small living thing that you need a microscope to be able to see them. |
| What are the three main types of microbes? | Viruses, Bacteria, Fungi. |
| What are the most common fungus microbes? | Yeasts. |
| Why are viruses not usually considered to be living? | They cannot carry out any of the seven life processes for themselves. |
| 5. What 2 microbes are important in making some foods and drinks? | 5. Bacteria and Yeasts. |
| What is the equation for aerobic respiration performed by yeast cells? | Glucose + Oxygen= Carbon Dioxide + Water |
| What is fermentation? | When yeast cells use anaerobic respiration. |
| What is the equation for anaerobic respiration performed by yeast cells? | Glucose=Carbon Dioxide + Ethanol |
| What is the word for the number of organisms in an area? | Population |
| In what conditions would yeast cells grow rapidly in an environment? | Warm, Moist, plenty of sugar |
| How does the population of these cells stop growing? | When something runs out (e.g sugar) |
| What is the name of the thing that stops them? | Limited Factor |
| What does infectious mean? | Diseases that can be spread from person to person. |
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