Questions & Answers
Browse all 25 questions from the
Fundamentals of Biochemistry study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which molecule do plants use to store energy that humans eat in bread and pasta?
-
A
Protein
-
B
Starch
-
C
Fat
-
D
Vitamin
2
Which substance makes up the majority of a human body?
-
A
Water
-
B
Iron
-
C
Sugar
-
D
Salt
3
What are the 'building blocks' that make up proteins?
-
A
Sugars
-
B
Fats
-
C
Amino acids
-
D
Minerals
4
Which sugar is the primary source of energy for human cells?
-
A
Glucose
-
B
Fructose
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C
Lactose
-
D
Sucrose
5
What is the main role of DNA in a living organism?
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A
To digest food
-
B
To store genetic information
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C
To provide energy
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D
To build muscles
6
Which type of biomolecule is used by the body for long-term energy storage and insulation?
-
A
Vitamins
-
B
Lipids
-
C
Sugars
-
D
Proteins
7
Which of these is an example of a simple sugar?
-
A
Cellulose
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B
Starch
-
C
Glucose
-
D
Fiber
8
What is the name of the protein in red blood cells that carries oxygen?
-
A
Hemoglobin
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B
Insulin
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C
Collagen
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D
Keratin
9
Which mineral is essential for building strong bones and teeth?
-
A
Iron
-
B
Calcium
-
C
Sodium
-
D
Potassium
10
What do enzymes do in the human body?
-
A
Store fat
-
B
Make skin
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C
Speed up chemical reactions
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D
Carry oxygen
11
Which vitamin is commonly found in citrus fruits and helps keep our immune system healthy?
-
A
Vitamin A
-
B
Vitamin D
-
C
Vitamin C
-
D
Vitamin E
12
What gas do humans exhale as a waste product of cellular respiration?
-
A
Oxygen
-
B
Carbon dioxide
-
C
Nitrogen
-
D
Hydrogen
13
Which process do plants use to create their own food from sunlight?
-
A
Respiration
-
B
Photosynthesis
-
C
Digestion
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D
Fermentation
14
What are enzymes primarily made of?
-
A
Proteins
-
B
Fats
-
C
Water
-
D
Minerals
15
Which nutrient is most important for repairing and building muscle tissue?
-
A
Carbohydrates
-
B
Fats
-
C
Proteins
-
D
Fiber
16
What is the main chemical element found in all organic molecules?
-
A
Gold
-
B
Carbon
-
C
Silver
-
D
Oxygen
17
Which part of the cell is known as the 'powerhouse' because it produces energy?
-
A
Nucleus
-
B
Mitochondria
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C
Ribosome
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D
Cell wall
18
What is the substance that gives green plants their color?
-
A
Hemoglobin
-
B
Chlorophyll
-
C
Keratin
-
D
Melanin
19
Which food group is a rich source of dietary fiber?
-
A
Meat
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B
Vegetables
-
C
Eggs
-
D
Butter
20
What chemical is used by the body to help digest fats?
-
A
Bile
-
B
Insulin
-
C
Adrenaline
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D
Glucose
21
Which molecule is responsible for carrying instructions to build proteins?
-
A
RNA
-
B
Starch
-
C
Salt
-
D
Iron
22
Where is glycogen stored in the human body for quick energy use?
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A
Lungs
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B
Liver and muscles
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C
Stomach
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D
Brain
23
Which of these is a liquid fat at room temperature?
-
A
Butter
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B
Lard
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C
Olive oil
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D
Tallow
24
What is the scientific term for the breakdown of food into energy?
-
A
Photosynthesis
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B
Respiration
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C
Diffusion
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D
Oxidation
25
Which element is found in all proteins but not in most carbohydrates?
-
A
Nitrogen
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B
Carbon
-
C
Oxygen
-
D
Hydrogen
