Goal: To explain the difference between chemical and mechanical digestion while eating a cracker and describe where each takes place. Sci7: Th Feb 11 In.

Slides:

Advertisements

Similar presentations

Digestion in the Mouth When food is chewed and mixed with saliva, it turns into a moist ball called a bolus. There are three pairs of salivary glands that.

Advertisements

Salty and Sweet Cracker Lab

The Digestive System. We all need energy to live We get it from different sources –Carbohydrates (sugars/starches) –Lipids (fats/oils) –Proteins (meat/lentils/beans)

The Digestive System Notes

The Process of Digestion The digestive system A one way tube which includes the mouth, pharynx, esophagus, stomach, small intestine and large intestine.

Mechanical and Chemical Digestion

Mr. Lockhart.  Break down food  Absorb Nutrients  Remove waste.

+ + + What happens in the digestive system… __________ __________

Interaction with internal organs CHAPTER 11 SECTIONS 2,3.

The Digestive System Lab. During this lab you will come in contact with food and other lab equipment. You may NOT eat any of the food or misuse any of.

Digestion & Enzymes. The Digestive System ? Mouth Physical digestion by teeth and chemical digestion by enzymes in saliva (amylase)

Digestion a. Breakdown ingested food to acquire energy b. Chemical Digestion: c. Mechanical Digestion:

Read and answer questions on page 64

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

1.Which enzyme does saliva contain? 2.Which enzyme works best in acidic condition? 3.What is digestion? 4.Where does digestion begin? 5.Where does digestion.

16-2 The Digestive Process Begins Parrot Book Pages

L4: 4.1 “Digestion in the Mouth”. PURPOSE: To explain digestion as it occurs in the mouth.

L4: “Digestion in the Mouth”. Question: How does the digestion of starch occur in the mouth?

Diagrams MouthStomach Small Intestine Large Intestine.

Goal: To learn about carbohydrates and the forms in which they are found (sugar and starch) by performing chemical tests in order to explain why the human.

Word of the Day: Enzyme: An enzyme is a substance that starts a chemical reaction in cells EnzymeChemical acted upon Product lipaseFats and oilsGlycerol.

Unit 2 Lesson 4 Digestion in the Mouth. Mechanical Digestion: Is the process of breaking down food into smaller pieces. In the mouth, this is done by.

The Digestive System.

Chapter 30 – Digestive and Excretory Systems. Let’s hear from Tim and Moby ystem/digestivesystem/

Lesson 3 Exploring Carbohydrates. Objectives Recognize that carbohydrates are one of three major food types. Recognize that carbohydrates are one of three.

The Digestive System You are what you eat!. What is the function of the digestive system? The digestive system has three main functions: 1. It breaks.

The Digestive Process Begins

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

DIGESTIVE SYSTEM.

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

Powerpoint Jeopardy Mechanical Digestion Chemical Digestion OrgansNutritionSurprise Me

The Digestive System. The Digestive Tract The Mouth The Stomach The Small Intestine The Oesophagus The Large Intestine.

4 – Digestion in the mouth

Chemical Digestion in the Mouth Biscuit Lab Summary Salivary glands found around your mouth produce saliva that begins chemical digestion of carbohydrates.

Libby and Holly. Eating the apple The food goes in the mouth it is chewed into little pieces by the teeth and is mixed with saliva.

THE DIGESTIVE PROCESS BEGINS Chapter 2 Section 3 Pages

DIGESTION NOTES Write what is white please.. DIGESTION & NUTRIENTS Digestion: the process where food is broken down into small nutrients to be absorbed.

Nutrition and Digestive System Review. 1. Identify the following information for the food to the left. a. Serving size b. Total carbohydrates c. Calories.

Section 10.1 Your Digestive System Slide 1 of 21 Objectives Describe the three main functions of the digestive system. Identify the organs of the digestive.

CHAPTER 2, SECTION 2.2 THE DIGESTIVE SYSTEM. THE BODY NEEDS ENERGY AND MATERIALS Nutrients are important substances that enable the body to move, grow,

Human Body System Lesson 4. In your mouth Teeth and tongue mechanical digestion Biting/TearingChewing

Food is broken down into nutrients used by body

Chapter 4 Nutrition Lesson 4 Digestion and Excretion Next >>

Section 10.1 Your Digestive System Objectives

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.

Double Digestion Jeopardy!.

Mechanical and Chemical Digestion

CLASS SET CLASS SET Physical and Chemical Changes in the Digestive System Reading to Learn: Read the following passage and answer the questions that follow.

Digestion 3 functions of the digestive system:

BrainPOP | Digestive System

Section 38.2 The Digestive System

The Digestive System Coachbook, pages 67-68

The Digestive System What body system has the function of breaking down food for absorption into the blood?

Directions: Read SILENTLY pages in your Human Biology Textbook

5 a day revision Digestion

Nutrition & Digestion Test Review.

Digestion of Organic Compounds

Using the slides. Record information for each system in your journal title and write the hint if you don’t already have it.(only red words need written.

Digestive System.

Digestive System Parts and Function

Digestive System Function: Moves and digests (or breaks down) food into usable materials for the body Digestion is the process of breaking down food into.

Chapter 3 section 5 Digestion and pH.

Unit 2: Digestion in The Mouth & Esophagus

Warm Up Objective: Scientists will describe the digestive system by analyzing the labs. What is the topic? What will you be doing? Why is this important?

Digestion Part III. How we eat Pages 406 – 420

The Process of Digestion

Digestion Questions What are the organs that make up the digestive system?

Title: Chemistry of food

Presentation transcript:

Goal: To explain the difference between chemical and mechanical digestion while eating a cracker and describe where each takes place. Sci7: Th Feb 11 In Journal Digestion in the Mouth  Mechanical: done automatically or as if by a machine instead of a controlled action. 1. What is mechanical digestion?  Chemical: composed of or involving the use of substances to aid the process of chemistry. 2. What is chemical digestion? 3. Where do each of these take place?

Sci7: Th Feb 11 In Journal Digestion in the Mouth Put the cracker in your mouth. When you are ready to swallow put your finger on your Adam’s apple. In your journal: Describe exactly what happened while you were chewing and swallowing the cracker. What happened to your Adam’s apple as you swallowed? Is this chemical or mechanical digestion? Or both? Why or why not? What is the saliva doing?

Goal: To explain the difference between chemical and mechanical digestion while eating a cracker and describe where each takes place. Sci7: Th Feb 11 In Journal Digestive in the Mouth Where do each of these take place? Make a T-Chart: Mechanical | Chemical Teeth Tongue Stomach Peristalsis throughout the system Saliva Stomach Small Intestine Large Intestine

Goal: To learn the role of enzymes in chemical digestion by performing tests on sugars and starches in order to explain digestion in the mouth. Sci7: Th Feb 11 In Journal Enzymes Write these definitions then answer the ?: Enzyme: a protein produced by living cells that promotes and acts as a catalyst Amylase: an enzyme found in the saliva. What is the purpose of Amylase?

Sci7: Th Feb 11 In Journal Enzymes Copy this Data Table in your Journal: Digestion in the Mouth — Enzymes Starch SolutionAmylase & Distilled Water Amylase & Starch Solution Sugar Test- (Test Tube) Starch Test- (Plastic Cup)

Sci7: Th Feb 11 In Journal Enzymes Write a hypothesis for each item in your data table: (I think… positive/negative… because…) Sugar test: Starch Solution Amylase & Distilled Water Amylase & Starch Solution Starch Test: Starch Solution Amylase & Distilled Water Amylase & Starch Solution

Sci7: Th Feb 11 In Journal Digestive in the Mouth READ The Following: “Galen – The Gladiator’s Doctor” (p.3) “Nutrients: You Just Can’t Live Without ‘Em” (p.20-3) ANSWER these questions: 1. What did Galen find out from seeing wounded gladiators? 2. What are the types energy the body needs? 3. Name the different titles of the “Nutrition” reading, and list one fact from each section.!

Goal: To learn the role of enzymes in chemical digestion by performing tests on sugars and starches in order to explain digestion in the mouth. Sci7: F Feb 12 In Journal Enzymes Write these definitions then answer the ?: Enzyme: a protein produced by living cells that promotes and acts as a catalyst Amylase: an enzyme found in the saliva. What is the purpose of Amylase?

Sci7: F Feb 12 In Journal Enzymes START THIS LAB WITH THE PLASTIC TRAY: 1.Use a pipette to Add 30 drops of starch solution to cups 1, 2, 5, and 6. 2.Add 30 drops of distilled water to cups 3 and 4. 3.Add 2 drops of amylase to cups 3, 4, 5, and 6. 4.Stir the contents of cups 3, 4, 5, and 6 with SEPARATE toothpicks. Let stand for 5 minutes. SUGAR TEST (Cups 1, 3, and 5): See Display STARCH TEST (Cups 2, 4, and 6): See Display ANSWER THE QUESTIONS ON YOUR DISPLAY WHILE YOU ARE WAITING AND AFTER THE LAB:

Sci7: F Feb 12 In Journal Enzymes ANSWER THESE QUESTIONS WHILE YOU ARE WAITING AND AFTER THE LAB: 1.What do you think amylase is? 2.what do you think amylase will do when you mix with the starch solution? 3.why do you need to wait 5 minutes before you perform the tests on the starch solution and amylase mixture? 4.Do you think that anything other than eating might cause saliva? 5.How LONG does it take for the food to reach the stomach? 6.So why wait 5 minutes?

Sci7: M Feb 22 In Journal Sugar & Starches 1. Look at your results from the Enzyme Lab. 2. What is the purpose of the Amylase? 3. What evidence do you have that the amylase is an enzyme that aids digestion? Goal: To learn about carbohydrates and the forms in which they are found (sugar and starch) by performing chemical tests in order to explain why the human body needs carbohydrates.