Digestion Topic 6.1 (modified for 2016 exam).

Slides:

Advertisements

Similar presentations

Advertisements

The Human Digestive System

REVIEW Digestion.

Glenlola Collegiate School

There are two types of digestion: mechanical and chemical. Mechanical digestion is when food is ground up using the teeth. Another example of mechanical.

Topic 6.1: Digestion.

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

6.1 Digestion Topic 6: Human health & physiology.

Digestive Enzymes By Serena (Xu Ruijia).

Digestion Textbook B Chp 11. Topics Overview of Digestion Parts & Functions of Alimentary Canal Enzymes Food Tests.

Animal Nutrition WJEC Biology Module 2 ( ) © Teachable and Carol Lekkas. Some rights reserved.

Human Digestion Topic 6.1 pg 67.

Digestion. Starter Quiz Interactive quiz 1 Assessment objectives Explain why digestion of large food molecules is essential Explain the.

REVIEW Nutrition & Digestion. 1. Explain what a food label tells you. The nutritional facts found in processed foods.

Digestion Topic 6.1. Assessment Statements Explain why digestion of large food molecules is essential Explain why digestion of large food.

Unit 6: Human Health And Physiology Lesson 6.1 Digestion.

The Digestive System of Man.

1 of 27 Learning Outcomes To explain what digestion is To label all the major organs of the digestive system.

Form Group 3C 12 th January 2007 WHAT IS DIGESTION?

1 The Digestive System Why digest food? Food consists of: –Carbohydrates –Lipids –Proteins –Nucleic acids –Minerals –Vitamins –Water These are.

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

Digestive System Topic 6 – Human Anatomy and Physiology Van Roekel – IB Biology 2.

Digestion Topic 6.1.

Alimentary tract. The four main roles of digestive system.

Welcome to Topic 6: Basic Human Physiology!. Plan for this week! Complete 6.1 – digestion – Monday – Thursday Wednesday – help lab on DCP and CE (on demand)

Plan for this week Complete Digestion (p.24 – 33 of IGCSE book)

What is absorption? The digested food molecules enter the circulatory system.

Digestion. Digestion Assimilation Egestion 5 What is digestion and why do we do it? (Remember the five stages of nutrition.) Digestion is breaking.

Topic Digestion Digestion is the chemical process of breaking down large particles into smaller usable molecules. The human body needs amino acids.

The Digestive System.

Mechanical and chemical digestion. What is Mechanical Digestion?  Mechanical digestion : the movement and breakdown of food (for example, tearing, smashing).

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

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

6.1 Digestion Readings IB Pg Overview: The Need to Feed Heterotrophs –dependent on a regular supply of food Animals fall into three categories:

DIGESTION 6.1. The Process Transport The circulatory system delivers the small molecules to cells around your body. Absorption Small molecules are absorbed.

Topic 6: Human Health and Physiology 6.1 Digestion.

Standards KNOW THIS Explain why digestion of large food molecules is essential  Food consumed contains unsuitable substances for human tissues.

 The contraction of circular and longitudinal muscle layers of the small intestine mixes the food with enzymes and moves it along the gut  The pancreas.

Today's objectives Explain where different nutrients (proteins, carbohydrates, and lipids) are broken down in the digestive system Connect the digestive.

The Digestive System Organs

Human Health & Physiology Digestion 6.1

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.

Chapter 18.2a The Digestive System.

Producing these end products

Enzymes (a special protein)

Enzymes and the digestive system

Mechanical vs. Chemical Digestion

Enzymes (a special protein)

6.1 - Digestion.

Section 38.2 The Digestive System

Topic 6: Human Health and Physiology

6.1 - Digestion.

The digestive system.

DIGESTION Topic 6.1 IB Biology Miss Werba.

Enzymes Structures Process

Small Intestine and Large Intestine

TOPIC 6.1 Digestion.

Standard 4.1 Explain generally how the digestive system converts macromolecules from food into smaller molecules that can be used by cells for energy and.

Where does digestion begin?

6.1 – Digestion.

Presentation transcript:

Digestion Topic 6.1 (modified for 2016 exam)

6.1.1 Explain why digestion of large food molecules is essential. Hydrolysis (water-splitting) is the reaction used to break down large organic molecules (carbohydrates, lipids, and proteins). Enzymes are needed for these reactions.

6.1.2 Explain the need for enzymes in digestion.

6.1.3 State the source, substrate, products and optimum pH conditions for one amylase, one protease and one lipase.

6.1.4 Draw and label a diagram of the digestive system.

6.1.4 Draw and label a diagram of the digestive system.

6.1.5 Outline the function of the stomach, small intestine and large intestine. Hydrochloric acid in the stomach lowers the pH to around 2, killing bacteria and denaturing proteins. Pepsin enzyme starts protein digestion. Muscular actions aid mechanical digestion. Stretch receptors in the muscular wall triggers release of enzymes.

6.1.5 Outline the function of the stomach, small intestine and large intestine.

6.1.5 Outline the function of the stomach, small intestine and large intestine.

6.1.6 Distinguish between absorption and assimilation. Digestion breaks down large food molecules into smaller molecules. Absorption is the uptake of these molecules into the blood. Once in the blood, they are carried to the tissues where they are assimilated – taken in to be used.

6.1.7 Explain how the structure of the villus is related to its role in absorption and transport of the products of digestion.

6.1.7 Explain how the structure of the villus is related to its role in absorption and transport of the products of digestion.

H2.1 State that digestive juices are secreted into the alimentary canal by glands, including salivary glands, gastric glands in the stomach wall, the pancreas and the wall of the small intestine.

H2.1 State that digestive juices are secreted into the alimentary canal by glands, including salivary glands, gastric glands in the stomach wall, the pancreas and the wall of the small intestine. Salivary amylase pepsin Pancreatic amylase Endopeptidases Exopeptidases carbohydrases peptidases

H2.5 Outline the role of membrane-bound enzymes on the surface of epithelial cells in the small intestine in digestion.

H3.1 Draw and label a diagram showing a transverse section of the ileum as seen under a light microscope.

H3.3 Explain the mechanisms used by the ileum to absorb and transport food, including facilitated diffusion, active transport, and endocytosis.

H3.3 Explain the mechanisms used by the ileum to absorb and transport food, including facilitated diffusion, active transport, and endocytosis.

H3.3 Explain the mechanisms used by the ileum to absorb and transport food, including facilitated diffusion, active transport, and endocytosis.

H3.3 Explain the mechanisms used by the ileum to absorb and transport food, including facilitated diffusion, active transport, and endocytosis.

H3.3 Explain the mechanisms used by the ileum to absorb and transport food, including facilitated diffusion, active transport, and endocytosis.