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Carbohydrates
Test Description: Quick quiz on carbohydrates
Instructions: Answer all questions to get your test result.
1) Name the process where water and carbon dioxide are converted into glucose and oxygen
A
Respiration
B
Combustion
C
Photosynthesis
D
Fermentation
2) Which gas is produced during photosynthesis?
A
Hydrogen
B
Nitrogen
C
Oxygen
D
Carbon dioxide
3) Carbohydrates are made of which elements?
A
Carbon, hydrogen and oxygen
B
Carbon and hydrogen only
C
Carbon, oxygen and helium
D
Carbon, hydrogen, oxygen and nitrogen
4) Compounds with the same molecular formulae but different structures are know as what?
A
Polysaccharides
B
Isomers
C
Isotopes
D
Isobars
5) Which of the following compounds is an isomer of glucose?
A
Fructose
B
Lactose
C
Cellulose
D
Maltose
6) What is the test for the presence of starch?
A
It changes iodine from brown to brick red
B
It changes Benedict's reagent from blue to black
C
It changes Benedict's reagent from blue to brick red
D
It changes iodine from brown to blue-black
7) During fermentation glucose is broken down to form alcohol and which other substance?
A
Carbon dioxide
B
Sucrose
C
Oxygen
D
Yeast
8) Why can fermentation not produce alcohols with a concentration higher than around 15%
A
Above 15% the enzymes in yeast are denatured
B
It is impossible to have a concentration of alcohol higher than 15%
C
Above 15% the alcohol changes into vodka
D
Above 15% the yeast decomposes
9) Starch is an example of which type of carbohydrate?
A
Disaccaharide
B
Sugar
C
Monosaccharide
D
Polysaccharide
10) The reaction which provides our body with energy is called...
A
Fermentation
B
Photosynthesis
C
Combustion
D
Respiration
*select an answer for all questions
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