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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
Fermentation
B
Photosynthesis
C
Respiration
D
Combustion
2) Which gas is produced during photosynthesis?
A
Oxygen
B
Hydrogen
C
Carbon dioxide
D
Nitrogen
3) Carbohydrates are made of which elements?
A
Carbon and hydrogen only
B
Carbon, hydrogen, oxygen and nitrogen
C
Carbon, hydrogen and oxygen
D
Carbon, oxygen and helium
4) Compounds with the same molecular formulae but different structures are know as what?
A
Isotopes
B
Polysaccharides
C
Isomers
D
Isobars
5) Which of the following compounds is an isomer of glucose?
A
Cellulose
B
Maltose
C
Lactose
D
Fructose
6) What is the test for the presence of starch?
A
It changes iodine from brown to brick red
B
It changes iodine from brown to blue-black
C
It changes Benedict's reagent from blue to brick red
D
It changes Benedict's reagent from blue to black
7) During fermentation glucose is broken down to form alcohol and which other substance?
A
Yeast
B
Oxygen
C
Carbon dioxide
D
Sucrose
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 yeast decomposes
C
Above 15% the alcohol changes into vodka
D
Above 15% the enzymes in yeast are denatured
9) Starch is an example of which type of carbohydrate?
A
Monosaccharide
B
Polysaccharide
C
Sugar
D
Disaccaharide
10) The reaction which provides our body with energy is called...
A
Fermentation
B
Respiration
C
Combustion
D
Photosynthesis
*select an answer for all questions
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