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WorksheetsCarbohydrates
Total questions: 18
Worksheet time: 14mins
The chemical formula for photosynthesis
C6O2+6H2O in the presence of light and chlorophyll converts to 6C6H12O6 + 6CO2
6CO2+ 6H2O in the presence of light and chlorophyll converts to C6H12O6 + 6O2
6O2 + 6H2O in the presence of light and chlorophyll converts to C6H12O6 + 6O2
Tick the monosaccharides
Sucrose
Glucose
Maltose
Galactose
Lactose
The following monosaccharides unite to form sucrose
Glucose + glucose
Glucose + galactose
Glucose + fructose
Glucose + lactose
Polysaccharides are made up of 3 or more monosaccharides with the loss of a water molecule with each new link polysaccharide chains can be (a)
The chemical formula for a disaccharide is
C6H12O6
C6H12O5
C12h24O12
C12H22O11
Tick the examples of polysaccharides
Maltose
Starch
Gums
Glucose
Cellulose
Glycogen is a polysaccharide
True
False
Monosaccharides are made up of
Many glucose units joined together
One glucose unit
Two glucose units
All sugars are sweet, some sugars are sweeter than others identify the sweetest out of the list below
Lactose
Sucrose
Fructose
Glucose
Caramelisation occurs at
140
160
180
177
Caramelisation occurs in 10 gradual stages between which of the following degrees
90-140
110-190
60-160
104-177
107-187
What is the property of hygroscopy?
Maillard reaction is when
Dry heat causes a food containing amino acids and glucose to turn brown
A non enzymic form of browning caused by heating the protein zein
A form of browning where dextrin turns to pyrodextrins due to heating
A non enzymic form of browning caused by dry heat on a food containing glucose and three fatty acids
Gums have the ability to thicken sauces containing starch
True
False
Pectin is used as a setting agent it is only present in ripe fruit in underripe fruit it is in the form of
(a)
The following are an effect of moist heat on carbohydrates
Carmelisation
Pectin extraction
Syrup formation
Maillard reaction
Gelatinisation
1g of carbs provides
9kcal energy
5kcal energy
3kcal energy
4kcal energy
When digesting carbs the pancreas secretes pancreatic juice which contains which enzyme
Sucrase
Lactase
Maltase
Amylase
