Human Nutrition 2 Flashcards
What is a biological molecule?
Organisms are made up of it
all cells are built using the same basic molecules.
What is H20 in terms of a molecule?
The most abundant molecule in living cells
What are the four main biological molecules?
Proteins, carbohydrates, lipids, nucleic acids
What do proteins and carbohydrates have in common?
They are both polymers
What are the monomers that polymers are made up of?
Amino acids
Monosaccharides
Nucleotides
Give examples of proteins and carbohydrates:
Meat
Fish
Eggs
Dairy
Nuts
What are the components of a lipid?
Glycerol and three fatty acids
What is the main function of a lipid?
insulation
What is the main function of a carbohydrate?
Energy
What is the main function of a protein?
Growth and repair
What elements are proteins made of?
C, H, O, N, sometimes S
What elements are carbohydrates and lipids both made up of?
C, H,O
What is the test for glucose?
heat with benedicts solution and if it turns from transparent blue to brick red you have a positive result
What is the test for starch?
Add iodine to a dimple tray, if it turns from orange to blue/black then its a positive result
What is the test for protein?
Add biuret reagent to a dimple tray and if it turns form transparent blue to lilac then it’s a positive test