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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
Photosynthesis
C
Combustion
D
Fermentation
2) Which gas is produced during photosynthesis?
A
Nitrogen
B
Carbon dioxide
C
Oxygen
D
Hydrogen
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
Isobars
B
Polysaccharides
C
Isotopes
D
Isomers
5) Which of the following compounds is an isomer of glucose?
A
Fructose
B
Cellulose
C
Maltose
D
Lactose
6) What is the test for the presence of starch?
A
It changes Benedict's reagent from blue to black
B
It changes iodine from brown to brick red
C
It changes iodine from brown to blue-black
D
It changes Benedict's reagent from blue to brick red
7) During fermentation glucose is broken down to form alcohol and which other substance?
A
Carbon dioxide
B
Yeast
C
Sucrose
D
Oxygen
8) Why can fermentation not produce alcohols with a concentration higher than around 15%
A
It is impossible to have a concentration of alcohol higher than 15%
B
Above 15% the alcohol changes into vodka
C
Above 15% the enzymes in yeast are denatured
D
Above 15% the yeast decomposes
9) Starch is an example of which type of carbohydrate?
A
Disaccaharide
B
Monosaccharide
C
Polysaccharide
D
Sugar
10) The reaction which provides our body with energy is called...
A
Respiration
B
Fermentation
C
Photosynthesis
D
Combustion
*select an answer for all questions
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