Carbohydrates MCQs

We made these Carbohydrates MCQs for you to check your knowledge.
They cover various aspects of carbohydrates, including their classification, functions, and metabolic pathways.

By answering these questions, you can deepen your understanding of carbohydrate chemistry and its significance in biological systems.

Ready to explore the world of carbohydrates? Let’s start answering the MCQs below!

MCQ on Carbohydrates

Carbon has _____ outermost electrons

4
2
3
7

Correct Answer

4

_____ atoms are central to all organisms because they’re found in carbohydrates, proteins, nucleic acids, and lipids

Oxygen
Sulfur
nitrogen
Carbon

Correct Answer

Carbon

the core structure of a carbohydrate is _____ carbon atom, two hydrogen atoms, and one oxygen atom

1
2
3
4

Correct Answer

1

Carbohydrates are macromolecules composed of carbon, hydrogen, and oxygen atoms, serving as a primary source of energy for living organisms and playing structural roles in cells and tissues.

The core structure of a carbohydrate is one carbon atom, _____ hydrogen atoms, and one oxygen atom

1
2
3
4

Correct Answer

2

the core structure of a carbohydrate is one carbon atom, two hydrogen atoms, and _____ oxygen atom

1
2
3
4

Correct Answer

1

Glucose has _____ carbon atoms

4
6
1
9

Correct Answer

6

Glucose has _____ hydrogen atoms

4
6
12
9

Correct Answer

12

Glucose has _____ oxygen atoms

4
6
1
9

Correct Answer

6

Simple sugars consisting of _____ carbon atoms are monosaccharides

Four to nine
One to three
three to seven
Nine to twelve

Correct Answer

 three to seven

Simple sugars consisting of three to seven carbon atoms are?

disaccharides
monosaccharides
polysaccharides
None of these

Correct Answer

monosaccharides

In living things, monosaccharides form _____ structures and can join together to form longer sugars

Ring-shaped
parralellogram-shaped
Triangular shaped
Square shaped

Correct Answer

 Ring-shaped

The most common monosaccharide is?

glucose
Lactose
fructose
None of these

Correct Answer

glucose

Two monosaccharide molecules joined together form __________?

disaccharide
monosaccharide
polysaccharide
None of these

Correct Answer

disaccharide

the sugar found in milk is?

glucose
Lactose
fructose
None of these

Correct Answer

Lactose

Which of these is called table sugar

glucose
Lactose
sucrose
None of these

Correct Answer

sucrose

Which of these is a disaccharide?

Lactose
sucrose
Both of these
fructose

Correct Answer

Both of these

More than two but just a few monosaccharides joined together are a _____

oligosaccharide
monosaccharide
polysaccharide
disaccharide

Correct Answer

oligosaccharide

oligosaccharides determine whether your blood type is A or B

monosaccharide
polysaccharide
Oligosaccharide
disaccharide

Correct Answer

Oligosaccharide

people with type _____ blood don’t have any of particular oligosaccharide

A
B
AB
O

Correct Answer

O

Long chains of monosaccharide molecules linked together form ?

monosaccharide
polysaccharide
Oligosaccharide
disaccharide

Correct Answer

polysaccharide

Starch and glycogen, which serve as a means of storing carbohydrates in plants and animals, respectively, are examples of _____.

monosaccharide
polysaccharide
Oligosaccharide
disaccharide

Correct Answer

polysaccharide

Polysaccharide include _____

Starch
glycogen
Both of these
sucrose

Correct Answer

Both of these

Which of these is sugar?

Glucose
Fructose
Ribose,
sucrose
All of these

Correct Answer

All of these

_____ is a six-carbon sugar molecule that digests a little more slowly than glucose and is sweeter to the taste

Fructose
Ribose
sucrose
lactose

Correct Answer

Fructose

Fructose is a _________________________carbon sugar molecule that digests a little more slowly than glucose and is sweeter to the taste

12
6
4
7

Correct Answer

6

Monosaccharides join together in a process known as _____?

photosynthesis
dehydration synthesis
Electrolysis
glycolysis

Correct Answer

 dehydration synthesis

_____ involves two molecules bonding and losing a water molecule

photosynthesis
Electrolysis
Glycolysis
dehydration synthesis

Correct Answer

dehydration synthesis

__________ is what happens when you don’t drink enough water

Apoptosis
necrosis
Dehydration
All of these

Correct Answer

Dehydration

Synthesis means __________ something

drying
making
destroying
breaking

Correct Answer

making

When glucose and fructose get together, a _____ molecule is removed from the monosaccharides and given off as a byproduct of the reaction.

water
Methane
alcohol
Carbon dioxide

Correct Answer

water

The opposite of dehydration synthesis is?

photolysis
glycolysis
hydrolysis
None of these

Correct Answer

hydrolysis

When sucrose is added to water, it splits apart into _____

Starch and glucose
glucose and fructose
Maltose and lactose
Lactose and fructose

Correct Answer

glucose and fructose

lysis means _____

break apart
Making something
Drying up
moisturizing

Correct Answer

break apart

Animals, including people, store a polysaccharide of glucose called?

Glucagon
insulin
glycogen
cellulose

Correct Answer

glycogen

Plants store glucose as the polysaccharide _____

Glucagon
starch
insulin
glycogen

Correct Answer

starch

Plants make a polysaccharide of glucose called?

insulin
Glycogen
cellulose
None of these

Correct Answer

cellulose

_____ helps maintain the health of your intestines

insulin
glucagon
cellulose
All of these

Correct Answer

cellulose

_____ is the most important carbohydrate molecule

Valine
Ligase
protease
Glucose

Correct Answer

Sources of glucose include _____ 

Breads
Pastas
Sweets
fruits
All of these

Correct Answer