FEED THE WORLD L4 Flashcards
What are carbohydrates made from?
Carbon , hydrogen and oxygen
How to test for carbohydrates
Iodine or Benedict’s reagent
What does iodine test for
Starch
What does Benedict’s test for
Glucose, maltose and fructose
What’s the colour change in iodine
Orange ->blue/black
What’s the colour change in Benedict’s test
Blue->brick red
What do carbohydrates provide us
Energy
What are the two types of carbohydrates
Starch and sugar
What is an isomer
A compound with the same molecular formula but a different structure
What sugar does Benedict’s solution not test for
Sucrose as it’s too complex
What are glucose and fructose
Monosaccharides and isomers of each other
What is glucose and fructose’s formula
C6H12O6
Maltose and sucrose are what ?
Disaccharides and are isomers of each other
What is sucrose’s and maltose’s formula
C12H22O11
How is sucrose formed
Sucrose is formed in a condensation reaction when glucose and fructose combine
What’s the formula for sucrose
C12H22O11+H2O
What’s the formula for starch
(C6H10O5)n
What are the four main elements in your body
Carbon, hydrogen, oxygen and nitrogen
What are the 2 compounds that are important to our diet
Carbohydrates and fat
What is calcium necessary for
Healthy bones and teeth
What is needed for red blood cells
Iron
What helps carry oxygen around the body
Iron
Is sugar soluble
Yes
Is starch soluble
No
Fast or slow energy release
Sugar
Fast
Fast or slow energy release
Starch
Slow
Which sex needs more energy
Male
Birut regent can identify …?
Protein
What is the colour change in Birut reagent test for protein
Light blue->lilac
What protein makes up our muscles
Actin and myosin
What protein makes our ligaments
Elastin it holds our bones together
What makes up our hair and nails
Keratin
What makes our skin stretchy
Collagen
What controls sugar levels
Insulin
What enzymes break down food
Trypsin and amylase
What protein helps carry oxygen and red blood cells around the body
Haemoglobin
How many amino acids are there
20
Vitamins are organic
True or false
True
What is vitamin C for
Healthy membranes
Lack of vitamin C causes
Scurvy
Source of vitamin c
Citrus fruits
What is vitamin D used for
Strong bones
What is the lack of vitamin d
Rickets
Source of vitamin d
Sunlight on skin or fatty food like oily fish
