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KS3 Digestion
KS3 digestion
| Question | Answer |
|---|---|
| What organ comes after the small intestine? | The organ that comes after the small intestine is the large intestine |
| What food groups are there in a cheese sandwich | The food groups in a cheese sandwich is carbohydrates, fat and protein |
| What is the function of the large intestine? | The large intestine's function is to absorb the water from the waste |
| What is the enzymes function? | The enzymes function is to break down large molecules into smaller ones. The smaller molecules can then be absorbed (go through) the small intestines |
| What food groups are there in bread? | The food groups in bread is mostly carbohydrates but there is a little bit of sugar |
| What is the function of the stomach? | The function of the stomach is to break food into sugar or amino-acid or fatty acid using enzymes and acid |
| Does the gall bladder come before or after the stomach? | The gall bladder comes after the stomach |
| how does digested food reach the blood stream? | it is absorbed into the blood stream when small molecules go through the small intestines' walls |
| what is the job of the digestive system. | to take in and break up food for use in the body |
| a long tube that takes (pushes) food to the stomach | oesophagus |
| it lets out enzymes into the duodenum | gall bladder |
| the place where digested molecules of food are absorbed | small intestine |
| the body part of the digestive system that removes the water from food | large intestines |
| what helps food not go down the wind pipe | the epiglottis |
| what happens to food when it reaches the stomach | enzymes break down the food |
| What is the scientific word for the wind-pipe? | Answer: Trachea |
| Where is the digestion of proteins completed in? | Answer: Small intestine |
| What is the digestive system? | Answer: The foods body-processing system |
| Where does food pass through between the mouth and the stomach? | Answer: Stomach |
| What happens when food reaches the stomach? | Answer: Juices mix with the food and stomach muscles squeeze it. |
| Where does the digestion begin? | Answer: The mouth when enzymes in saliva stat breaking down starch |
| How does the liver contribute to digestion? | Answer: It does NOT! The function of the liver is to destroy poisons |
| What is the rectum? | Answer: The temporary storage area for faeces |
| where are the amylase produced? | salivary glands (in the mouth) pancreas and small intestine |
| where are the protease produced | stomach pancreas and the small intestine |
| where are the lipase produced? | pancreas and the small intestine |
| what does lipase do? | breaks down fats |
| what does protease do? | breaks down protease. |
| WHAT DOES CARBOHYDRASE DO? | breaks down carbohydrates. |
| what does the stomach produce? | hydrochloric acid. |
| after the stomach where does the food travel next? | The small intestine |
| what types of foods contain protein? | meat and cheese |
| what types of foods contain fats? | butter, oil, you also find a lot of oil in nuts and cheese |
| what types of foods contain starch? | bread, pasta, rice, flour |
| what types of foods contain sugar? | sweets |
| what types of foods contain fibres? | fruit and veg |
| do we need a lot of fats for our diets? | no |
| why do we have teeth | to break down big giant pieces of food our lower organs cannot pass through |
| 1) why do we need (amino acids from) proteins? | for growth, and repair of cells |
| 1) why do we need (fatty acids from) fats? | for insulation and energy storage |
| 1) why do we need (sugar from) starch? | for energy |
| 4) why do we need vitamins and mirerals? | good working of the body |
| What is another name for the food pipe? | Oesophagus |
| What does the large intestine do? | Reabsorbs water: the water goes from the large instestine through the intestines walls into the bloodstream |
| What enzymes break down fat? | Lipase |
| What helps digest liquids in your stomach? | Hydrochloric acid |
| What happens to the food when it is going down the oesophagus? | The muscles contract |
| Why do you think only sugar can get into the blood? | because sugar is small so it goes through the walls of the intestines |
| What do fibres do? | Help food transit. |
| Why do we need Calcium? | to help grow strong bones |
| Why is it bad to eat too much fat? | it will clog up the arteries (blood vessels) and blood will not be able to go through |
| why do girls need more iron than boys? | When girls have their periods they los a bit of blood; to make new blood cells, they need iron |
| what happens to fibres in the small and in the large intestines? | Nothing! The fibres simply get pushed along! |
| what is teh name for the movement of the intestines that pushes along the food? | peristalsis |
| In the visking tube experiment, why did we keep teh temperature at 37C? | because this is the temperature where enzymes work best at |
| what happens to enzymes when the temperature gets too hot? | the enzymes change shape (they denature) and can not do their job anymore |
| what is the chemical test for starch? | iodine; if there is NO starch, iodine stays brown if there is starch, Iodine turns blue |
| what is the chemical test for sugar? | Benedict AND heat; if there is NO sugar, Benedict stays blue if there is sugar, Benedict turns red brick (orange) |
| what does Benedict and heat test for? | sugar (glucose) |
| What does iodine test for? | starch |
| what colour does iodine turn if there is starch? | blue-black |
| What colour does Benedict turn is there is sugar? | orange (brick red) |
| Give the names of three substances which are absorbed into the blood without being digested | vitamins, minerals and sugar |
| Which substance passes through the body without being digested? | fibres |
Created by:
ursulinebio
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