Just All Of Bilogy.. Flashcards
What chemical is need for the starch test?
Iodine
What chemical is needed for sugar test?
Benedict’s solution
What chemical is needed to test for protein?
Biuret solution!
What chemical is needed to test for fat?
Ethanol
What is the initial colour and the final colour for the starch test?
Yellow brown- blue black
What is the initial colour and the final colour for the sugar test
Blue-brick red
What is the initial colour and the final colour for the protein test
Blue-lilac/purple
What is the initial colour and the final colour for the fat test?
Clear-white emulsion
How many kilojoules are there in 1g of carbohydrate
17 kilojoules
How many kilojoules are there in 1g of fat?
38 kilojoules
How many kilojoules are in 1g of protein?
17 kilojoules
What is the word equation for finding out how much energy is in 1g of food?
Volume of water x rise in temperature x 4.2
Why would energy value calculate from this practical be lower than the value given on the food label
(Give three reasons)
-heat lost in the atmosphere
-heat lost to apparatus
-The water was not stirred so the temperature may have been measured in a cooler area
What is the word equation for tooth decay?
Bacteria+sugar ~> Acid+time=tooth decay
What are the eight labels to a tooth?
Enamel
Dentine
Pulp cavity
Gum
Bone
Cement and fibre
Blood and nerve vessels
Root end opening
What is the crown?
The pert of the tooth above the gum
What is the root of the tooth?
The sort if the tooth below the gum
What is the enamel?
The outer hard part of the tooth, above the dentine
What is the dentine?
The inner soft layer beneath the enamel
What is the pulp cavity?
The cavity which contains all the nerve and blood vessels
What is the cement and fibre part of the tooth?
Responsible for holding the tooth into the gum
What are the nerve and blood vessels of the tooth?
The nerve and blood vessels provide feeling- provides nutrients to the tooth
What are the five processes of eating
Ingestion
Digestion
Absorption
Assimilation
Egestion
What is ingestion?
Food taken into the body
What is digestion?
The food is broken up into soluble pieces, this starts at the mouth with the chemical of starch and continues into the stomach and small intestines
What is absorption?
The soluble pieces are absorbed into the blood stream and transported around
What is assimilation?
The soluble products of digestion are taken into the cell in which they are used
What is egestion?
The removal of waste in the body
What nutrient is amylase found in?
Carbohydrates
What nutrient is protease found in?
Protein
What nutrient is Lipase found in?
Fat
Where is amylase found?
Mouth, pancreas and small intestines
Where is protease found at?
Stomach, pancreas and small intestines
Where is lipase found in?
Pancreas and small intestines
What kind of molecules do carbohydrates make?
Sugar molecules
What kind of molecule do protease make?
Amnio acid molecule
What kind of molecules do fats make?
Fat acids and glycerol molecules
