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WorksheetsRevising the digestive system, enzymes and absorption
Total questions: 19
Worksheet time: 10mins
Name organ A
trachea
liver
stomach
oesophagus
Name organ B
oesophagus
stomach
liver
large intestine
Name organ C
small intestine
liver
stomach
large intestine
What is absorption?
When food is broken into small pieces by the teeth and then pushed down the oesophagus.
When nutrients from food move into the blood.
When food gets broken down into small, soluble molecules
When food is churned up into smaller pieces.
Where does absorption happen?
small intestine
large intestine
stomach
liver
What is digestion?
The breaking down of small, soluble food molecule into large, insoluble food molecules.
Food travelling through the digestive system and passing out as poo.
The breaking down of large, insoluble food molecules to small, soluble molecules so that it can move into the blood.
Food molecules moving from the small intestine into the blood.
What are digestive enzymes?
Chemicals that slow down the breakdown of food molecules so that they can be absorbed into the blood.
Chemicals that speed up the breakdown of food molecules so that they can be absorbed into the blood.
Chemicals that work to break down fats.
Chemicals that help food to be swallowed.
Enzyme that speeds up the breakdown of the carbohydrate, starch.
amylase
protease
lipase
ameeelayse
Starch (carbohydrate in pasta and bread) gets broken down into....
enzymes
iodine
amino acids
glucose
What enzyme speeds up the breakdown of protein?
amylase
protease
lipase
bile
Green liquid made by the liver and needed to breakdown fats into small droplets.
protease
amylase
lipase
bile
On average the small intestine is about ..... long
1m
60cm
4m
7m
The small intestine is not a smooth tube, it is lined with 'finger like projections' called...
alveoli
cilia
villi
viliapolis
The villi in the small intestine...
increase surface area for absorption (more absorption can happen)
decrease surface area for absorption
help to reduce the process of digestion
speed up digestion
Where is the enzyme amylase found?
liver
small intestine
stomach
saliva (mouth)
Protease enzymes are found in the stomach. Protease enzymes speed up the break down of...
starch
protein
fats
sugars
Food that cannot be digested (mainly fibre) moves along to the large intestine and is removed from the body as poo in a process called....
excretion
absorption
digestion
egestion
Starch is broken down into glucose. The glucose moves into the blood and is taken to all cells for....
respiration
digestion
absorption
How are the villi in the small intestine adapted for absorption?
long and wavy
thin walls
excellent blood supply
large surface area
