Biochem Quiz : Lipid_ MacUITMOnline version
This quiz game is based on a video about lipids. Players will answer multiple-choice questions to test their understanding of what lipids are and why they are important in living organisms. Players will learn how saturated, unsaturated, and trans fats differ, and how phospholipids form the cell membrane bilayer with hydrophilic heads and hydrophobic tails. By the end of the game, students should be able to identify lipid categories, explain basic lipid structures, and connect lipid properties to real biological functions.
1
A major function of lipids is?
a
Short-term energy storage
b
Long-term energy storage
c
Making DNA
d
Producing oxygen
2
Lipid categories shown are?
a
Amino acids, proteins, enzymes, hormones
b
Triglycerides, phospholipids, steroids, waxes
c
Glucose, starch, glycogen, cellulose
d
DNA, RNA, ribosomes, nucleus
3
Lipids are mostly _____ in water.
a
Soluble
b
Insoluble
c
Neutralized
d
Broken down
a
Hydrophilic
b
Hydrostatic
c
Hydrophobic
d
Hypertonic
a
Fats only
b
Oils only
c
Fats and oils
d
Steroids and waxes
6
Fats are usually ____ at room temperature.
a
Solid
b
Liquid
c
Gas
d
Always Frozen
7
Fats are mainly used by?
a
Plants
b
Animals
c
Bacteria
d
Viruses
8
Oils are mainly used by?
a
Plants
b
Animals
c
Fungi
d
Human Only
9
Oils are usually ____ at room temperature.
a
Solid
b
Liquid
c
Gas
d
Always Frozen
10
A triglyceride is made of ?
a
1 glycerol + 1 fatty acid
b
1 glycerol + 2 fatty acids
c
1 glycerol + 3 fatty acids
d
3 glycerol + 1 fatty acid
11
Which part is labeled in fatty acid structure?
a
Acid Group
b
Hydrocarbon chain
c
Methyl group
d
All of the above
12
A saturated fatty acid has?
a
No double bonds
b
One double bond
c
Many double bonds
d
Only phosphate groups
13
An unsaturated fatty acid has?
a
No double bonds
b
A double bond that causes a bend/kink
c
No carbon atoms
d
Only glycerol
14
A trans fatty acid is?
a
Bent chain because of double bond
b
Straight chain even with a double bond (trans)
c
No double bond
d
Made from proteins
15
A phospholipid contains?
a
3 fatty acids
b
2 fatty acids + glycerol + phosphate group
c
Only glucose
d
Only cholesterol
16
In a phospholipid, the ____ is hydrophilic?
a
Tail
b
Head
c
Entire molecule is hydrophilic
d
Double bond
17
Phospholipids mainly form?
a
DNA strands
b
Cell membrane bilayers
c
Bones
d
Hair
a
Triglycerides
b
Steroids
c
Phospholipids
d
Water
19
Example of steroid in the video?
a
Testosterone
b
Glucose
c
Starch
d
Water
20
What is the main function of waxes in living organisms?
a
To provide waterproofing and protection in living organisms.
b
Used for short-term energy storage
c
Form the structure of DNA
d
Act as enzymes to speed up reactions
Explanation
1
Answer:
Lipids are mainly used for long-term energy storage. Short-term energy comes from carbohydrates, DNA is made of nucleotides, and oxygen is produced through photosynthesis.
2
Answer:
A Triglycerides, phospholipids, steroids, and waxes are the main groups of lipids. The other options list proteins, carbohydrates, or nucleic acids, not lipids.
3
Answer:
Lipids are insoluble in water. They are hydrophobic, meaning they do not mix with water, while the other options do not describe solubility.
4
Answer:
Lipids are hydrophobic, meaning they repel water. The other terms relate to different water properties or osmotic conditions, not lipid behaviour.
5
Answer:
A triglycerides include both fats and oils. Steroids and waxes are different types of lipids, not triglycerides.
6
Answer:
Fats are solid at room temperature due to their tightly packed (more saturated) structure.
7
Answer:
An animals commonly store fat under the skin and around organs as an energy reserve.
8
Answer:
A plants store oils, such as sunflower or canola oil. Animals mainly store fats, and oils are not limited to humans or fungi.
9
Answer :
Oils are liquid at room temperature due to their higher unsaturated fat content.
10
Answer:
A triglyceride is made up of one glycerol molecule and three fatty acids, which is why it is called a triglyceride (“tri” means three). One glycerol with only one or two fatty acids would form a mono- or diglyceride, while three glycerol with one fatty acid is not a correct lipid structure.
11
Answer:
A fatty acid contains an acid (carboxyl) group, a long hydrocarbon chain, and a methyl group at the end.
12
Answer:
A saturated fatty acids have no double bonds, meaning all carbon atoms are fully saturated with hydrogen.
13
Answer
An unsaturated fatty acids contain a cis double bond that causes a bend or kink in the carbon chain.
14
Answer:
A trans fats have a double bond that keeps the fatty acid chain straight, unlike cis fats which have a bent structure.
15
Answer:
A phospholipid is made of two(2) fatty acids, a glycerol, and a phosphate group, which forms the basic structure of cell membranes.
16
Answer:
A phosphate head of a phospholipid is hydrophilic, meaning it attracts and mixes with water, while the tails repel water.
17
Answer:
A phospholipids form the bilayer of cell membranes, while DNA, bones, and hair are made of different biological materials.
18
Answer:
A cholesterol is a steroid, characterized by its distinctive ring structure, not a triglyceride, phospholipid, or wax.
19
Answer:
Testosterone is a steroid hormone, while glucose and starch are carbohydrates and water is not a lipid.
20
Answer:
Waxes are not used for short-term energy, do not form DNA, and do not act as enzymes.
Please, watch and listen the following carefully. Then, anwer the questions. https://www.youtube.com/watch?v=TcMBFSGVi1c