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Criado por Maria Cecilia Pinheiro
mais de 6 anos atrás
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Questão | Responda |
Why do animals need the digestive system? | To break down food into nutrients |
What system transforms these nutrients? | Circulatory System |
Why do cells need nutrients? What is the other name of the nutrients cells need? | To grow, maintain and repair. Macromolecules. |
What are the types of macromolecules? | carbohydrates, lipids, nucleic acids and protein |
What is responsible for maintaining the body's metabolism? | The 4 categories of macromolecules working together |
How are the nutrients from macromolecules absorbed? | They are broken down into molecules that are small enough to be absorbed by cells |
What is hydrolysis? | It is the process where water is added to help break the bonds that hold the molecule |
What are enzymes? | Protein molecules secreted by the cell in the digestive system that helps speeding up the process |
Define Ingestion | Taking of nutrients |
Define Digestion | Breakdown of complex molecules into smaller components |
Define Absorption | Taking of digested molecules into the cells of digestive tract |
Define Egestion | Removal of waste food material from the body |
What are the types of micronutrients? | vitamins, minerals and water |
What are the mechanical and chemical digestion on the mouth? | Mechanical - Teeth Chemical - Saliva |
What is the esophagus? | It's a tube that transports food into the stomach by peristalsis |
What are the functions of the stomach? | Stores food temporarily. Secretes gastric juices. Mechanically and chemically breaks down food. |
What is pepsin? | An enzyme that breaks down proteins into amino acids |
What is the function of the liver? | Produce bile (that is stored on the gall bladder) and break up fats |
What is the function of pancreas? | Produces enzymes to digest proteins and starch |
What are the 3 parts of the small intestine and what are they for? | Duodenum - most digestion Jejunum and Ileum - absorption of nutrients and water |
What is the function of the small intestine? | Where most of the chemical digestion happens and simple sugars and lipids are absorbed. |
What is the function of villi? | Increase surface area for absorption in the small intestine |
What are the undigestible solids? | Fibers |
What are the functions of bacteria in the large intestine? | Break down undigested food, neutralise some harmful products, produce vitamins needed for blood clotting, support body's natural defences |
Where is amylase made, where does it work and what is the substrate? | Made - Salivary Glands and Pancreas Works - Mouth and Small Intestine Substrate - Starch |
Where is protease made, where does it work and what is the substrate? | Made - Stomach cells, Pancreas and and Small Intestine Works - Stomach and Small Intestine Substrate - Protein |
Where are the bile salts made, where do they work and what is the substrate? | Made - Liver Works - Small Intestine Substrate - Fat |
Where is lipase made, where does it work and what is the substrate? | Made - Pancreas Works - Small Intestine Substrate - Fat |
Where is maltase made, where does it work and what is the substrate? | Made - Small Intestine Works - Small Intestine Substrate - Maltose |
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