R E S P I R A T I O N I R O N P I R A T E S Settler Activity: Solve the anagram (rearrange the letters to make one word) R E S P I R A T I O N I R O N P I R A T E S Click to reveal answer

The Science Game

Your category is… Respiration

Write a fact about respiration on your white board Starter: Write a fact about respiration on your white board You have 2 minutes

Hold your boards up….

Put your board down if your answer is listed here… It is to do with breathing X X It happens in your lungs X It produces oxygen Unfortunately, that’s not right. Let’s find out what is…

if your answer is listed here… Well done It’s how our cells make energy  It involves glucose and oxygen  It produces carbon dioxide and water  It happens in the mitochondria 

Respiration Learning Outcomes: By the end of this lesson, you will be able to: Write a word equation for respiration (6) Explain what respiration is and where it occurs (7) Apply your knowledge to plan a practical to investigate variables (8) Lesson Objectives: To understand the process of respiration and the molecules involved Carry out practicals to see respiration in action

Recap on Animal Cells (fill in the gaps on your worksheet) ………………………….. The powerhouse of the cell, where respiration takes place ………………………….. Controls what goes in and out of the cell ………………………….. Jelly-like substance which contains organelles ………………………….. Controls what happens in the cell & contains DNA

Recap on Animal Cells (check your answers) Mitochondria The powerhouse of the cell, where respiration takes place Cell Membrane Controls what goes in and out of the cell Cytoplasm Jelly-like substance which contains organelles Nucleus Controls what happens in the cell & contains DNA

So… What is Respiration So… What is Respiration? Fill in the blanks on your worksheet Respiration is the process by which oxygen and glucose are combined in the mitochondria of your cells to produce energy. The products from this reaction are carbon dioxide and water.

This is why athletes eat sachets of glucose whilst running marathons…..

So, what is respiration? How could you write this in a shorter version?

How did you do? One way to write the process is using the word equation glucose + oxygen  carbon dioxide + water + (energy) Write this down in the space on your worksheet

How? To understand how this works, we need to look at the chemical elements and molecules involved

Using Nano Simbox Code: XXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX Collect a tablet, open the web browser 2. Go to: student.nanosimbox.io 3. Enter the software using the code below, your email and name 4. Build Carbon Dioxide, Water, Glucose and Oxygen by pressing the purple icon with these molecules. Choose the level of difficulty you prefer. 5. Write down the completed chemical formula for each of these molecules on your worksheet (the letters and numbers) Code: XXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Let’s try to balance a chemical symbol equation for respiration Think of it like a cake – All of the reactants (ingredients) go in, they get mixed together and chemically joined and become something different, called the product (the cake in this example) You know that all the ingredients (2 eggs, 200g flour etc) are in the cake, but they are now completely different and can no longer be easily separated. This is why the equation has to balance. In 2017, a list of his greatest films was published, give us the name of those films by the clues provided.

glucose + oxygen  carbon dioxide + water + (energy) Wait! How do we balanced the symbol equation for Respiration? Word equation for respiration glucose + oxygen  carbon dioxide + water + (energy) Wait! We’re not done yet – this equation isn’t balanced – you need to have the same number of each element on each side of the equation Chemical equation for photosynthesis Energy is not an element, so not included in the chemical equation C6H12O6 glucose + oxygen O2 carbon dioxide CO2  + water H2O Oxygen always goes around in pairs unless attached to another element

The rules of balancing equations C6H12O6 + O2 CO2 + H2O Let’s put 6 more carbons in to balance both sides Work out how many of each element you have on each side The small number next to an element is how many of that element there are in that molecule - You cannot edit this You need to work out how many you have to times an element by to balance it We cannot separate the molecule, so….

The rules of balancing equations C6H12O6 + O2 CO2 + H2O Let’s put 6 molecules of carbon dioxide in (This also affects the number of oxygen molecules in the equation) Work out how many of each element you have on each side The small number next to an element is how many of that element there are in that molecule - You cannot edit this You need to work out how many you have to times an element by to balance it

The rules of balancing equations C6H12O6 + O2 6CO2 + H2O On this side we have 6 x C 8 x O 12 x H On this side we have 6 x C 13 x O 2 x H

The rules of balancing equations C6H12O6 + O2 6CO2 + H2O REMEMBER: You cannot change the small numbers. Now need 12 x H on the right… We do this by multiplying the whole H2O molecule On this side we have 6 x C 8 x O 12 x H On this side we have 6 x C 13 x O 2 x H

The rules of balancing equations C6H12O6 + O2 6CO2 + 6H2O On this side we have 6 x C 8 x O 12 x H On this side we have 6 x C 18 x O 12 x H

The rules of balancing equations C6H12O6 + O2 6CO2 + 6H2O Look at the totals below – now we need to balance the O on the left On this side we have 6 x C 8 x O 12 x H On this side we have 6 x C 18 x O 12 x H

The rules of balancing equations C6H12O6 + O2 6CO2 + 6H2O We multiply the O2 by 6… On this side we have 6 x C 8 x O 12 x H On this side we have 6 x C 18 x O 12 x H

The rules of balancing equations C6H12O6 + 6O2 6CO2 + 6H2O On this side we have 6 x C 18 x O 12 x H On this side we have 6 x C 18 x O 12 x H

The rules of balancing equations C6H12O6 + 6O2 6CO2 + 6H2O It matches! The equation is balanced! On this side we have 6 x C 18 x O 12 x H On this side we have 6 x C 18 x O 12 x H

The balanced symbol equation for photosynthesis is: C6H12O6 + 6O2 6CO2 + 6H2O Write this on your worksheets

Watch the Screaming Jelly Baby experiment This shows you just how much energy is in sugar (glucose)!

The power of sugar is AMAZING!

Respiration Circus

Put your safety goggles on Tuck your shirt and tie in Safety First Put your safety goggles on Tuck your shirt and tie in Tie long hair back   

There are 4 practicals around the room Follow the instructions on your worksheet and note what results you observe

Blowing into limewater What happened. What does that result mean Blowing into limewater What happened? What does that result mean? How is this evidence of respiration?

Breathing on a mirror What did you observe Breathing on a mirror What did you observe? What product of respiration is demonstrated?

Balloon on boiling tube of live yeast What happened Balloon on boiling tube of live yeast What happened? What does this tell you about the state of one of the products of respiration?

Elastic band finger exercise What happened? Can you explain why?

Anaerobic Respiration When your mitochondria cannot produce energy as quickly as the muscles need it – You get anaerobic respiration. This is when glucose gets broken down into lactic acid. This then breaks down when there is more oxygen, which is why you breathe faster after exercising.

Find the chemical formula of lactic acid Using Nano Simbox Find the chemical formula of lactic acid Collect a tablet, open the web browser 2. Go to: student.nanosimbox.io 3. Enter the software using the code below, your email and name 4. Build Lactic Acid. Choose the level of difficulty you prefer. Write down the completed chemical formula for this molecule on your worksheet (the letters and numbers) Code: XXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Write the balanced symbol equation for Anaerobic Respiration Hint: the work equation is: Glucose  Lactic Acid (+ Energy)

What factors could you change? Plenary: How would you test for factors affecting the rate of respiration in yeast? What factors could you change? You have 5 minutes

How would you teach respiration to someone else in a fun way? Extension: How would you teach respiration to someone else in a fun way? Be creative!