Digestion Flashcards
Test for starch
Iodine will go blue black if starch is present
Test for glucose
Benedict’s solution will go colours between blue to brick red
Test for protein
Biuret test will go to colours between blue to violet
Enzyme that breaks down carbohydrates
Carbohydrase
Enzyme that breaks down protein
Protease
Enzyme that breaks down fats (lipids)
lipase
Where are carbohydrase produced
Mouth,
pancreas and
small intestine
Where are Protease produced
Stomach,
pancreas and
small intestine
Where are lipase produced
Pancreas, mouth, and stomach
What are carbohydrates used for
Energy
What is protein used for
Growth and repair of tissue (muscles)
What are fats used for
Energy store make cell membranes
What is water used for
most or all body processes
What are lipids broken down into
glycerol and fatty acids
what are carbohydrates broken down into
glucose
what are proteins broken down into
amino acids
what does bile do
Emulsifies fats which breaks them into smaller globules of fat which increases the surface area and makes it easier to bb broken down by the enzymes. Also increases the PH of food into the optimum PH for lipase
What does the liver do
Secrets bile
What does the large intestine do
Absorbs water
What does the pancreas do
Makes and secrets all enzymes into the intestine to break down the food
What does the oesophagus do
waves of muscular contraction and relaxation force food down the oesophagus into the stomach. This is called peristalsis
What does the small intestine do
where digested food molecules are absorbed
How is the small intestine specialised for its job
Villi increase surface area for diffusion of soluble food into blood.
Good blood supply,
removing absorbed food to maintain a diffusion gradient
