Measuring RespirationMeasuring Respiration

To know how to measure respiration To know how to measure respiration

RespirationRespiration

Respiration takes place in the cells (it is not “breathing in and out”)

Respiration is the release of energy (from glucose) in our cells

Animals and plants respire

In the light plants respire, but produce the oxygen for this to occur by photosynthesis - the carbon dioxide they produce via respiration is used for photosynthesis

In the dark plants respire, producing carbon dioxide

Respiration takes place in the cells (it is not “breathing in and out”)

Respiration is the release of energy (from glucose) in our cells

Animals and plants respire

In the light plants respire, but produce the oxygen for this to occur by photosynthesis - the carbon dioxide they produce via respiration is used for photosynthesis

In the dark plants respire, producing carbon dioxide

EquationEquation

Remember, in a reaction: reactants products

glucose + oxygen carbon dioxide + water + (energy)

C6H12O6 + 6O2 6CO2 + 6H2O + (energy)

Respiration is the process of converting glucose to energy, occurring in every cell

Remember, in a reaction: reactants products

glucose + oxygen carbon dioxide + water + (energy)

C6H12O6 + 6O2 6CO2 + 6H2O + (energy)

Respiration is the process of converting glucose to energy, occurring in every cell

Respiration WordsearchRespiration Wordsearch

Have a go at the following wordsearch: -Have a go at the following wordsearch: -

Words to find: -

AerobicAnaerobicCarbohydraseCarbohydrateCarbon dioxideEnergyGlucoseLactic acidOxygenRespirationWater

Measuring RespirationMeasuring Respiration

How could you measure the rate of respiration?

During respiration the gas carbon dioxide is produced - testing for this would show if respiration occurred, and at what rate (limewater goes cloudy)

Water is also produced - we could measure this (how much we exhale)

Energy is also released during respiration, being used by our cells - you could monitor the activity of the organism (the heat released), although this is not completely accurate!

How could you measure the rate of respiration?

During respiration the gas carbon dioxide is produced - testing for this would show if respiration occurred, and at what rate (limewater goes cloudy)

Water is also produced - we could measure this (how much we exhale)

Energy is also released during respiration, being used by our cells - you could monitor the activity of the organism (the heat released), although this is not completely accurate!

ExperimentExperiment

You have a variety of experiments to carry out today, measuring the respiration rate at each

You will need to work in pairs / threes, moving from station to station

For each station you need to carry out the experiment, and write a brief summary in your book of the experiment, and what you found

E.g - station 1: measuring the temperature of people before and after exercise - after exercise a greater amount of respiration has taken place, and as a result the temperature changed (increased / decreased) because…

You have a variety of experiments to carry out today, measuring the respiration rate at each

You will need to work in pairs / threes, moving from station to station

For each station you need to carry out the experiment, and write a brief summary in your book of the experiment, and what you found

E.g - station 1: measuring the temperature of people before and after exercise - after exercise a greater amount of respiration has taken place, and as a result the temperature changed (increased / decreased) because…

Activity EVIDENCE respiration is happening

Beans ‘germinating’ in water

Plants in sunlight

‘Litter’ containing Woodlice in a beaker

YOU exercising

Yeast solution

DRY Beans

StationsStations

Germinating and non-germinating seed temperatures

Meal worms moving temperature and the room temperature

Your temperature before and after exercise

Pond weed in hydrogencarbonate indicator (in light and dark)• yellow / orange in presence of carbon dioxide• red / purple with no carbon dioxide

Yeast with delivery tube to limewater

Germinating and non-germinating seed temperatures

Meal worms moving temperature and the room temperature

Your temperature before and after exercise

Pond weed in hydrogencarbonate indicator (in light and dark)• yellow / orange in presence of carbon dioxide• red / purple with no carbon dioxide

Yeast with delivery tube to limewater