Respiration
We can place all things into three groups:
Alive (living)
eg Cow, Grass, mouse, fly
|
Used to Be alive
eg wood, fossil, paper |
Non-living
eg stone, glass, metal
|
Living things are able to do several things a non-living thing may not be able to do like move, grow, reproduce and feed .
There are seven processes that are carried out by all animals and plants. These can be remembered by thinking of thw word MRS NERG
|
Life process |
What it means |
| Movement |
Going from one place to another.
Animals usually move their whole body from one place to another.
Leaves turn towards the light. Roots grow down into the soil. |
|
Reproduction |
Producing new plants or animals.
Animals have babies.
New plants grow from seeds. |
|
Sensitivity |
How things react and respond to what is happening around them eg plants
turning and moving towards the light or
your mouth watering when you smell something good to eat. |
|
Nutrition |
Taking in food. Food is needed to supply energy
Green plants can make their own food using sunlight, carbon dioxide and water.
Animals eat plants or other animals. |
|
Excretion |
Getting rid of waste substances.
eg Plants and animals excrete (get rid of) carbon dioxide.
|
|
Respiration |
Making energy to keep you active.
Plants and animals use oxygen from the air to help turn food into energy. We need
energy for our muscles. More on Respiration |
|
Growth |
Cells multiplying and growing
Seedlings grow into bigger plants.
babies grow into adults |
Respiration:
|
Respiration
Respiration is
the name of a chemical reaction carried out by all living organisms in order
to provide them with energy
Glucose
(a kind of sugar) reacts with oxygen releasing energy.
Carbon dioxide
and water are produced as
waste products
Word
equation:
 Glucose
+ oxygen ----->
carbon dioxide + water + energy
This kind
of respiration (which needs oxygen), is called Aerobic respiration.
There is another kind of respiration (which does not require oxygen) called
anaerobic respiration and it is carried out by certain bacteria.
|
In humans the sugar enters the body through the mouth and Oxygen enters the
body through the lungs
SEE BREATHING AND RESPIRATORY SYSTEM
Respiration is the exact reverse of photosynthesis.
Learn them both carefully but DO NOT MUDDLE THEM UP
This page is part of a site that uses frames.
If you cannot see navigation links to the left or top then
click here to return
to the start.
