Biology form 4

Biology form 4 chapter 5

Air Pollution The air is polluted by mainly 5 different gases: carbon dioxide, carbon monoxide, sulphur dioxide, nitrogen dioxide and ozone. It continues digestion of food and it receives enzymes from the intestinal wall and from the pancreas. Carbohydrates: 1 of the bulk material of which food is made of. Prevents night blindness exophthalmia. An example of such relationships is the relationship between the cellulose-digesting bacteria in the caesium and appendix of ruminants. Lysozyme: Chemical found in the saliva used to kill bacteria. Incisors: Teeth adapted for cutting food. Villi: Small structures found on the walls of the ileum where absorption stakes place.

Sugars: Carbohydrates used to get energy. Prevents Skin lesions.

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Holophytic autotrophic : Plants feed with this type of feeding. Intercostals: Muscles between they ribs that contract and relax during inhalation and exhalation.

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Vitamin E: Found in milk, egg yolk, lettuce. Crown: The upper part of the tooth. Hepatic Vein: The vein that transports blood from the liver to the heart. Glucose: C6H12O6 Final product of digestion of carbohydrates.

Biology form 4 chapter 3

Part of haemoglobin in rbc. Assimilation: the nutrients are then assimilated taken to various organs around the body. Hepatic Portal Vein: The vein that transports blood rich in soluble products of digestion from the ileum to the liver. Phosphorous: Found in many foods; important for bones and teeth. Emphysema: Emphysema causes the walls between alveoli become torn and broken, while the others left become thicker. Prevents cramps. Gas exchange: The process where oxygen is absorbed by the blood and carbon dioxide is exhaled out of the body. Vitamin K: Found in cabbage, spinach, fish liver. Sugars: Carbohydrates used to get energy.

Lacteal: The structure found in the villi that absorbs fat droplets. Air Pollution The air is polluted by mainly 5 different gases: carbon dioxide, carbon monoxide, sulphur dioxide, nitrogen dioxide and ozone.

Biology form 4 chapter 7

Vestigial organs found in the body are the caesium and the appendix. Some are co- enzymes and other help to prevent illnesses. From the intestinal wall:, Mainly five enzymes are produced: Trypsin: breaks down polypeptides into dipeptides. Cyanide: Enzyme inhibitor. Physical digestion: teeth to increase surface area for enzyme action to break down food. Incisors: Teeth adapted for cutting food. The second pipe from where air passes and is filtered by cilia and mucus secreting cells. Prevents cramps. Special precautions must be taken because once caught, these diseases are incurable. Herbivores eat vegetable matter and have special bodily structures to help them digest cellulose. While you exhale, the rib cage moves inwards and downwards, the diaphragm relaxes dome shaped and the volume in the chest decreases. Chemical digestion: food is mixed with saliva and salivary amylase breaks down some starch from the food if there is into maltose.
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Biology Form 4 Chapter 6