Investigating Catalase

Slides:

Advertisements

Similar presentations

Chapter 7 : Nutrition in Plants 7.1 Photosynthesis

Advertisements

ENZYME INQUIRY LAB Watch the PowerPoint presentation and copy the notes. When finished, assemble in a lab group of 2 students and begin planning your experiment.

Osmosis L.O: to define osmosis to investigate osmosis

Unit 2 PPA3 The effect of changes in pH and temperature on the decomposition of hydrogen peroxide.

ENZYMES 1 ENZYMES Quick Quiz 1 Press the button when you’re sure… remember to take your time as you only get one chance!

HIGHER CHEMISTRY REVISION. Unit 1:- Reaction Rates 1. A student was asked to write a plan of the procedure for an investigation. The entry made in her.

Enzymes PHOTOSYNTHESIS:CO 2 + H 2 O → Glucose + O 2 RESPIRATION:Glucose + O 2 → CO 2 + H 2 O How do these processes happen? What do the arrows mean? Hmm!!

Factors that Affect the Function of an Enzyme Lab Conclusions.

Investigating Catalase Topic 3 IB Internal Assessment.

CATALASE LAB ENZYME REACTION LAB.

AP Bio Lab # 13 Enzyme Activity Pre-Lab

Rates of Reaction and Particle Size

Experiment Questions Enzyme Temperature.

Protein and Enzymes b. What are enzymes and where are they found?

CAPT Lab: Investigating the Effect of Temperature on Enzyme Activity Created by Mr. Cross

Starter Activity: Write down as much as you can on a show me board about making proteins.

Homeostasis of Enzymes What is an enzyme? How do enzymes work? What factors can effect enzyme action?

Graphing Lab. Problem: What is the relationship between volume of water and height in a beaker, erlenmeyer flask, and test tube. Background –Explain or.

How to Write A Lab Report

Using the Scientific Method. Investigating Osmosis in Potato Cells.

Unit 7: Reaction Rates and Equilibrium Aim 7.5: How do catalysts increase reaction rate? Do now: Complete the review questions at the top of the handout.

Topic 4 - Properties of Enzymes and Uses in Industries National 4 Cell Biology.

Lab Report Guide IB.

Key area 7 Respiration.

4.3 (b) To investigate the effect of pH on catalase activity.

ENZYME ACTION – MEASURING RATE OF REACTION – SUBSTRATE CONCENTRATION The effects of the following factors on the rate of enzyme controlled reactions –

How enzyme function.

Lesson Starter 1.What is a catalyst? 2.What effect do catalysts have on the input energy required for a reaction to happen? 3.What is special about a catalyst.

Investigating Catalase

Osmosis: THE INVESTIGATION!! IGCSE Combined Science.

ENZYME INQUIRY LAB Watch the PowerPoint presentation and make notes in your Journal. When finished, assemble in your lab group and begin planning your.

S2 Chemistry Rates of Reactions.

Te Kura Māori o Porirua Practical Workbook Science

What do you remember about enzymes?

Key words: Denatured, Optimum temperature, PH

Biological catalysts Enzymes.

Warm-Up Answer the following questions in complete sentences.

Enzyme Lab Post-Lab.

Do Now (on loose-leaf) What is catalase?

Lesson Starter Write a sentence describing temperature and enzymes including the following words: Enzyme activity low temperature high temperature reaction denature.

Part 1 – The Scientific Report Must be presented in the sections listed in your handout Written in past tense Written in third person Presented.

Protein and enzymes c: Enzyme specificity

Catalysis Experimental Design

Before you start get or make a copy of this Table of results

Catalysts Connect Starter: Name as many compounds as you can:

INVESTIGATING THE EFFECT OF TEMPERATURE ON Initial Rate of Linked to global warming ENZYME ACTIVITY Investigating climate change Read the student sheet.

How temperature affects the rate of photosynthesis?

Quiz What are the four factors that affect the rate of a chemical reaction? For a reaction to occur particles must collide with each other, what are the.

Introduction to Enzymes

Energetics & Rates GCSE REVISION.

Lesson Starter What is the name of the muscular tube which connects the mouth and stomach? Describe the process of peristalsis Describe the role of churning.

Learner name: Assessor name: D Roczniak Issue date: 30/10/17

Objective: To be able to plan an accurate investigation

Add Your Exciting Title Here

Unit 3 Science Investigation Skills

8.5 Enzyme Activity Enzyme Action

Investigating how Concentration Effects the Rate of Reaction

Set Up Your Lab Report Name: _________ Title: Lab 7 – The Effects of Environmental Conditions on Enzyme Activity Introduction Purpose: To observe the effects.

HIGHER CHEMISTRY REVISION.

Investigation Report write-up

Investigation Report write-up

Warm Up Objective: Scientists will describe enzymes and what may affect the rate of reactions by analyzing a lab. What is the topic? What will you be.

Add Your Exciting Title Here

Biology Do Now Directions: Take out a sheet of notebook (Do Now sheet) and, then answer each question based on your notes. What type of molecule.

Action of urease Objectives

Presentation transcript:

Investigating Catalase IGCSE Biology

Aim To determine which type of tissue contains the highest concentration of catalase

Background Catalase is an enzyme found in almost every type of living tissue Catalase catalyses the following reaction: Hydrogen peroxide water + oxygen catalase Try to find out: What is the optimum temperature for catalase? What is the optimum pH for catalase? What is the chemical equation for this reaction?

Hypothesis You will be setting up the experiment as follows: Liver a potato Boiled liver apple Liver b growing splint 5ml of 3% hydrogen peroxide solution and 2ml of 5% detergent solution (except test tube E) A B C D E What do you think will happen in each test tube? And why? (you don´t need to draw the diagram – a few sentences is all that is necessary here)

Variables What is the independent variable? -what are you changing? What is the dependant variable? -what are you measuring? What are the controlled variables? -what are you keeping the same?

Materials 5 test tubes and a test tube rack 2 pieces of liver 1 piece of boiled liver 1 piece of potato 1 piece of apple 3% hydrogen peroxide solution 5% detergent solution 10ml measuring cylinder Ruler Bunsen burner Splint stopwatch

Diagram Liver a potato Boiled liver apple Liver b glowing splint 5ml of 3% hydrogen peroxide solution and 2ml of 5% detergent solution (NO DETERGENT IN TEST TUBE E!!!) A B C D E E Liver b

Method Liver a potato Boiled liver apple Liver b glowing splint 5ml of 3% hydrogen peroxide solution and 2ml of 5% detergent solution (NO DETERGENT IN TEST TUBE E!!!) A B C D E Set up the experiment as shown in the diagram Add all the pieces of living tissue at the same time and leave for 3 min Measure the height of the foam in test tubes A-D and record in a table Take the test tube marked liver B and insert a glowing splint (if oxygen is present then the splint will light)

Results How will you collect your raw data? -make sure you have table drawn with sensible headings and units How will you present your data? -what kind of graph would be appropriate?

Conclusion Do you support or reject your hypothesis? Quote data from your graph to prove this!! If you had to do this experiment again how could you improve it?