Lesson #11: Enzymes in digestion

Slides:

Advertisements

Similar presentations

Aim: How do enzymes work?

Advertisements

Understanding Animal Digestion

The Human Digestive System

Revision Questions on Enzymes

Principles of Biology By Frank H. Osborne, Ph. D. Lab 4 - Enzymes and Digestion.

30.3 The Digestive System Functions of the Digestive System

Enzymes in Digestion Text p.168.

Nutrition and Metabolism

Human Biology: Digestive System

THE HUMAN DIGESTIVE SYSTEM THE CHEMICAL DIGESTION.

Digestive Process and Enzymes. Review What is the difference between physical digestion and chemical digestion? What is an enzyme? Why are enzymes specific.

Nutrition in Man. Recap! Crossword puzzle! Lesson Objectives By the end of the lesson, you should be able to: State the 3 parts of the small intestine.

BIOL 204 Lab For Week 12 Digestive Enzymes.

Digestion summary. What goes where? How does chemical digestion happen ?

Mammalian Nutrition Two basic types of nutrition exist: HETEROTROPHIC Organisms eat food containing Organic molecules. AUTOTROPHIC Organisms manufacture.

REVIEW. Catalysts produced by living things Bring about the chemical reactions in : Respiration to release energy from the breakdown of glucose in every.

Splat Lipase Protease Carbohydrase Amylase Glucose Glycerol Amino acids Acid Alkali Lipase Protease Carbohydrase Amylase Glucose Glycerol Amino acids Acid.

Chemical Digestion Ms. Lowrie Biology 11. Enzymes  Biological catalysts  Made in ribosomes = proteins  Three types in digestion: Carbohydrase Lipase.

Digestion. Digestive System (Blank) Digestive System (Labeled)

Digestion is…. The chemical and physical breakdown of large food molecules into smaller soluble ones.

Presentation title slide

What am I ? Enzymes quiz Click here to begin BEWARE ! One mistake and you have to start again !

Digestive Enzymes Throughout the digestive system, enzymes break down the food into useful substances.  Recall that enzymes are protein catalysts – they.

Enzymes. Metabolism The sum of all the chemical reactions in your body What does it mean if you have a high metabolism? Low? Does your metabolism change?

Eat anything good lately? Do you know what happens to all that yummy food after it's swallowed?

1.The Digestive System breaks down food and absorbs it into the bloodstream. 2.The main organs of the digestive system are the stomach, pancreas, gall.

Enzymes in Digestion L.O: To understand how the enzymes in the digestive system help digestion Starter: digestion know the answer.

Enzymes. Proteins that catalyse chemical reactions in living organisms.

IB Biology Review Digestive System. What are the components of the human digestive system? Mouth Salivary glands Esophagus Stomach Small intestine Liver.

Enzymes and pH L.O: To investigate the affect of pH on enzyme action.

Biology IGCSE Food and Digestion. Enzymes

Enzymes enzymes are catalysts (agents that speed up reactions) they are not used up in reactions, therefore can be used again and again.

Smart Teach-B2 Topic 4 Proteins, Enzymes and Mutations Digestive System.

Enzymes. Introduction Enzymes = organic molecules act as catalysts – Type of protein Catalyst = reduce amount of activation energy needed for reaction.

ENZYMES. Enzymes  You should be able to recall the function on an enzyme, name the main enzymes that work in the body and the food group that they work.

The Digestive System The Digestive System breaks down food and absorbs it into the bloodstream. The main organs of the digestive system are the stomach,

Starter Name the organs of the digestive system that food travels through in order. What other organs are involved in the digestive system that food.

BIOL 204 Lab Week 12 Digestive Enzymes.

Producing these end products

CORE: Creative thinkers

CATALYST Tuesday, October 3rd

BIOL 204 Lab For Week 12 Digestive Enzymes.

Revision lesson on enzymes

The Digestive System The Digestive System breaks down food and absorbs it into the bloodstream. The main organs of the digestive system are the stomach,

Proteins breaks down proteins into fatty acids and glycerol in stomach

Catalysts speed up the rate of the reaction.

Enzymes: Biological Catalysts

Catalysts speed up the rate of the reaction.

Starter:Main Organs of the Digestive System

6.1 - Digestion.

BIOL 204 Lab For Week 12 Digestive Enzymes.

Enzymes Make sure you revise: What Enzymes are Enzymes structure

The human digestive system

6.1 - Digestion.

Digestion and Absorption of Nutrients Review Questions 1-23

2 main types of enzymes Catabolic enzymes which (break down) large molecules into smaller molecules e.g. digestion of starch by the enzyme amylase.

Enzymes Structures Process

LAB 3 ENZYMATIC DIGESTION.

Lab 3: Enzymatic Digestion

Calorimetry Enzymes Edexcel Osmosis GCSE Biology Key Concepts Part 2

Digestive System Knowledge Organiser

Review of Unit 4: Digestive and Excretory Systems!

Digestion Notes.

Enzymes Remember : Large particles cannot be absorbed in the small intestine INSIDE THE BODY (BLOOD) GUT Large particles (e.g. starch) are left in the.

Digestive Enzymes Break up macromolecules into their building blocks

Presentation transcript:

Lesson #11: Enzymes in digestion Objective: - Identify the main enzymes in digestion and their functions

Practical Label the boiling tubes A & B Fill each tubing with 8ml of starch. Wash one of the tubes very well and place it in boiling tube A. Add 3ml of amylase solution in the other tube. Shake. Wash very well and place in boiling tube B. Place both boiling tubes in the water bath for 30 minutes. Test the water in the boiling tube for starch and glucose using iodine and benedict’s solution Record your results.

Digestive Enzymes There are 3 main types of digestive enzymes: Enzyme Reaction catalysed Where produced Amylase Starch → sugars Salivary glands, pancreas, small intestine Protease Proteins → amino acids Stomach, pancreas, small intestine Lipase Lipids → fatty acids + glycerol Pancreas, small intestine

Digestive Enzymes Amylase Glucose Starch Protease Amino Acids Protein

Digestive Enzymes Fatty Acids Fat and Glycerol Lipase Fatty Acid

The enzyme fits over the substrate perfectly – like a key fits a lock. Amylase enzyme Starch molecule It holds the starch molecule in place as a water molecule breaks the bond between two glucose particles

This continues until the molecule has been broken down completely

Digestion Summary Chemical digestion: Salivary amylase: starch  maltose Pepsin in stomach: protein  peptides Pancreatic amylase: starch  maltose Trypsin from the pancreas: protein  peptides Lipase from the pancreas: fats  glycerol + fatty acids

What factors affect the rate of reaction of enzymes How do you think you can speed up the rate of an enzymic reaction? (Hint: It’s the same as any other reaction!)