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Carbohydrates
Test Description: Carbohydrates revision (S3)
Instructions: Answer all questions to get your test result.
1) Which of the following compounds is a monosaccharide
A
Sucrose
B
Starch
C
Fructose
D
Maltose
2) The process by which plants and animals break down carbohydrates using oxygen to produce carbon dioxide and water is called
A
Respiration
B
Photosynthesis
C
Condensation
D
Combustion
3) Carbohydrates contain the elements
A
Carbon and Oxygen
B
Carbon and Water
C
Carbon and Hydrogen
D
Carbon, hydrogen and oxygen
4) The test for starch is that it changes
A
Iodine from brown to brick red
B
Iodine from brown to blue/black
C
Benedict's solution from blue to blue/black
D
Benedict's solution from blue to brick red
5) The test for reducing sugars is that they change
A
Benedict's solution from blue to brick red
B
Benedict's solution from blue to blue/black
C
Iodine from brown to brick red
D
Iodine from brown to blue/black
6) The process by which glucose is converted to alcohol using the enzymes in yeast is called
A
Combustion
B
Fermentation
C
Photosynthesis
D
Distillation
7) Starch and sucrose can be hydrolysed using
A
Benedict's reagent
B
Yeast
C
Amylase and hydrochloric acid
D
Visking tubing
8) The alcohol in alcoholic drinks is called
A
Propanol
B
Methanol
C
Ethanol
D
Alkanol
9) The formula for fructose is
A
C6H12O6
B
C2H5OH
C
C12H22O11
D
(C6H1O5)y
10) Which sugar does not cause Benedict's solution (when heated) to change colour?
A
Glucose
B
Lactose
C
MAltose
D
Sucrose
11) Which of the following carbohydrates does not taste sweet
A
Fructose
B
Sucrose
C
Cellulose
D
Lactose
12) During photosynthesis chlorophyll in the leaves of a plant
A
Absorbs sunlight's energy
B
Neutralises acid
C
Bubbles
D
Breaks down carbon dioxide
13) Which of the following is not true about when two monosaccharides join together?
A
A disaccharide is formed
B
It is called hydrolysis
C
It is a condensation reaction
D
A molecule of water is released
14) Which of the following molecules is NOT a disaccharide?
A
Glucose
B
Sucrose
C
Maltose
D
Lactose
15) The beam of light will be clearly seen in which of these solutions when light is shone on them?
A
Glucose
B
Maltose
C
Starch
D
Sucrose
*select an answer for all questions
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