Life Process Research Paper
Life Processes
Mrs.Nerg/Gren
Living things have certain life processes in common. There are seven things that they need to do to count as being alive. The phrase MRS GREN is a way to remember them
M Movement All living things move, even plants
R Respiration Getting energy from food
S Sensitivity Detecting changes in the surroundings
G Growth All living things grow
R Reproduction Making more living things of the same type
E Excretion Getting rid of waste
N Nutrition Taking in and using food
It can be easy to tell if something is living or not. A teddy bear might look like a bear, but it can't do any of the seven things it needs to be able to do to count as being alive.
What about a car? A car can move, it gets energy from …show more content…
Large insoluble substances cannot pass through.
The inside wall of the small intestine needs to be thin, with a really big surface area. This allows absorption to happen quickly and efficiently. If the small intestine had a thick wall and a small surface area, a lot of digested food might pass out of the body before it had a chance to be absorbed.
To get a big surface area, the inside wall of the small intestine is lined with tiny villi (one of them is called a villus). These stick out and give a big surface area. They also contain blood capillaries to carry away the absorbed food molecules.
Egestion
Excess water is absorbed back into the body in the large intestine. What is left then is undigested food. This is stored in the rectum, the lower part of the large intestine, until we are ready to go to the toilet. It then comes out of the rectum through the anus as faeces. This process is called egestion.
Smoking and Health
Smoking is very harmful to health. It causes around 80 per cent of deaths from lung cancer, bronchitis and emphysema in the UK, and almost a fifth of UK deaths from heart disease.
Tobacco smoke contains many harmful substances. These include: tar
Mrs.Nerg/Gren
Living things have certain life processes in common. There are seven things that they need to do to count as being alive. The phrase MRS GREN is a way to remember them
M Movement All living things move, even plants
R Respiration Getting energy from food
S Sensitivity Detecting changes in the surroundings
G Growth All living things grow
R Reproduction Making more living things of the same type
E Excretion Getting rid of waste
N Nutrition Taking in and using food
It can be easy to tell if something is living or not. A teddy bear might look like a bear, but it can't do any of the seven things it needs to be able to do to count as being alive.
What about a car? A car can move, it gets energy from …show more content…
Large insoluble substances cannot pass through.
The inside wall of the small intestine needs to be thin, with a really big surface area. This allows absorption to happen quickly and efficiently. If the small intestine had a thick wall and a small surface area, a lot of digested food might pass out of the body before it had a chance to be absorbed.
To get a big surface area, the inside wall of the small intestine is lined with tiny villi (one of them is called a villus). These stick out and give a big surface area. They also contain blood capillaries to carry away the absorbed food molecules.
Egestion
Excess water is absorbed back into the body in the large intestine. What is left then is undigested food. This is stored in the rectum, the lower part of the large intestine, until we are ready to go to the toilet. It then comes out of the rectum through the anus as faeces. This process is called egestion.
Smoking and Health
Smoking is very harmful to health. It causes around 80 per cent of deaths from lung cancer, bronchitis and emphysema in the UK, and almost a fifth of UK deaths from heart disease.
Tobacco smoke contains many harmful substances. These include: tar