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Biology - Coggle Diagram
Biology
Digestive enzymes
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The active site is where the enzyme speeds up the reaction as the substrate enters the active site (the active site is a specific shape to its subsstrate) and the bonds of the subsrate are broken down (emulsifies). biological catalyst.
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Where are they made?
they are made in the pancreas and go into the small intestine (in the mean time the liver is producing bile which is stored in the gall bladder and then goes into the small intestine)
Plant cells
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permenent vacoule
contains cell sap, a weak solution of sugar and salts
Chloropasts
these are were photosynethics occurs,which makes food for the plant. they contain a green substance called chlorphyll
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active transport, osmosis & diffuision
Active transport
The net movement of particles from an area of area low concentration to an area of high concentration
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osmosis
the movement of water particles from a concentrated solution to a dilute solution across a partially permable membrane
Digestive system
The order and functions
1- mouth= Where digestion starts 2-Oesophagus= a tube that connects the mouth to the stomach
3-Stomach= contains hydrochloric acid to kill any bacteria in / on the food
4-Small intestine= Contains enzymes to digest the large food molecules into smaller nutrient molecules
5-large insteine= Removes excess water to make poo
6- Rectrum= Were faeces (poo) gets stored
7- Anus= a ring of muscles that relaxes to allow feaces (poo) to exit the body.
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Food test RP
Iodine solution
The test for starch is iodine solution. The solutions starts of orange but will turn blue/black if starch is present in the food.
Step 1- Put one peice of each food in the well of a spotting tile
Step 2- add a few drops of iodine on the food in the spotting tile
Step 3- the iodin solution will turn black/blue if starch is present in the food
Risk assesment
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migrating risk= be caustious when pouring in the solution and wash hands after incase any comes in contact with your skin
Benedict solution
This test for sugar is using benedict solution and a water bath. if sugar is present it will turn red if not it will stay blue.
Step 1- Set up a bunsen burner underneath the water bath
step 2- add a food sample
Step 3- Add 3- 4 drops of the benedict solution
Step 4- Heat for about 5 minutes (minimum) at 80 degrees
Step 5- Observe for changes of colour
Risk assesement
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migrating the risk= Beakers should be on the middle of desk(doesnt spill hot water) & use a dust pan and brush and put glass in the sharp bin
