B3 Organisation and Digestive System Flashcards
What is Cell Organisation?
Cells to Tissues
Tissues to Organs
Organs to Organ Systems
What are Enzymes?
Catalysts, speeding up chemical reactions
How do Enzymes work?
Each have an unique shape which fits on another substrate forming a chemical reaction.
What makes an Enzyme denatured?
High Room Temperatures and PH, changes shape of Enzyme
Where and what does Amylase break down?
It breaks down in Salivary Glands, Pancreas and Small Intestines. It breaks Sugars down into Starch
Where and what does Protease break down?
It breaks down in Stomach, Pancreas and Small Intestines. It breaks Protein down into Amino Acids
Where and what does Lipase break down?
It breaks down in Pancreas and Small Intestines. It breaks Lipids down into Fatty Acids
Mean Rate of Reaction = Amount of Product / ____
Time
In a chemical reaction 60g of a product was produced in 15 seconds. What is the rate of reaction
60/15
= 4g/seconds
In a chemical reaction 20g of a product in 40 seconds. Calculate the rate of reaction
20/40
= 0.5g/seconds
How to test for Sugars?
- Crush the food into a test tube
- Apply Benedict solution
- Has reducing sugars, solution will go from Blue to Green, Yellow or Red
How to test for Starch?
- Crush the food into a test tube
- Apply Iodine solution
- Has Starch if solution goes from Orange to Black or Dark Blue
How to test for Protein?
- Crush food into a test tube
- Apply Biuret Solution
- Has Protein if solution went from Blue to Purple
How to test for Lipids?
- Crush food into a test tube
- Apply Sudan III
- Has Lipids if solution has 2 layers, top being bright red
Function of the Liver?
-Produces Bile, which nuetralises stomach acids and mixes fat
