Slides in this set
In This Section We Will Be Studying The Following Topics:
Why do we need to take in food and oxygen?
Respiration and combustion. How are they linked?
What is aerobic respiration?
How do we exchange gas between the lungs and the
The lungs and how they work.
The different parts of the circulatory system.
Respiration in other living things.…read more
WHAT HAPPENS IN
in our cells
We take in food
and oxygen. Energy
We then have the energy that we need.
We produce carbon dioxide and water.…read more
We need energy so that we can do things.
· Energy helps our body to make new cells and to grow.
Move Stay Grow
Specialist parts of our cells release
energy from food.
Muscle cells are packed with these
so that lots of energy can be
RESPIRATION or BREATHING?
Respiration is a chemical reaction that happens in all
cells. It is the process of releasing energy from our
Breathing is simply the movement of air in and out of
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
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.
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
The equations for these chemical reactions are exactly the
Food Carbon ENER
dioxide + Water + GY