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WHAT HAPPENS IN
RESPIRATION?
A chemical
reaction
takes place
in our cells
+
Carbon dioxide
We take in food
and oxygen. Energy
We then have the energy that we need.
We produce carbon dioxide and water.…read more

Slide 3

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ENERGY
We need energy so that we can do things.
· Energy helps our body to make new cells and to grow.
Move Stay Grow
warm bigger
Specialist parts of our cells release
energy from food.
Muscle cells are packed with these
so that lots of energy can be
released.…read more

Slide 4

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RESPIRATION or BREATHING?
Respiration is a chemical reaction that happens in all
cells. It is the process of releasing energy from our
food.
Breathing is simply the movement of air in and out of
the lungs.
They are not the same process.
Think about why we need to resuscitate
people by putting air into their lungs.
We also have to push the blood around to the
tissues by pushing on the chest.
The oxygen has to get to the body cells so
that respiration can take place.…read more

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TRUE OR FALSE?
Read the following statements and work out
which are true and which are false.
Respiration is getting air in and out of our bodies. FALSE
Respiration is the process of releasing energy from the TRUE
food we eat.
Breathing involves getting oxygen into the blood and TRUE
removing carbon dioxide.
Breathing takes place in the muscle cells.
FALSE…read more

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COMBUSTION
When a fuel burns it needs When Food is used in the
oxygen. cells it also needs oxygen.
The fuel releases ENERGY, The food releases ENERGY,
CARBON DIOXIDE and WATER. CARBON DIOXIDE and
WATER.
The equations for these chemical reactions are exactly the
same:
Food Carbon ENER
+ Oxygen
dioxide + Water + GY
Fuel…read more

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Comments

Ed keen

Really good stuff...thanks

Swallowtail

A well thought out revision PowerPoint that includes  exercises to test understanding and learning  in different styles such as quizzes, tables and questions with answers. This would be useful to any student needing to study respiration as part of their GCSE specification.

Lorran payne

thanks good stuff

safa99

its is very usefull

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