AnswersBiology VIA Fall 2026 Lstrangesdale.orgCharacteristics of Life

Lipids Answers

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1
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Which statement is true?

A
Lipids are a type of fat.
B
Fats are a type of lipid.
C
Fats and lipids are unrelated.
D
All lipids are fats, and all fats are lipids.
2
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Which fat is most likely a solid at room temperature?

A
one that is saturated
B
one that is unsaturated
C
one with double bonds
D
one that contains no hydrogen
3

The diagram shows the general structure of a lipid, which consists of two main parts.Which part is circled?

Question illustration
A
alcohol group
B
fatty acid
C
carboxyl group
D
unsaturated lipid
4

If the last carbon atom of an unsaturated fatty acid is bonded to two hydrogen atoms and one carbon atom, what type of bond must exist between the last carbon and the other carbon atom?

A
single
B
double
C
triple
D
quadruple
5

Which is a main function of lipids?

A
providing energy storage
B
transmitting genetic information
C
forming bone and muscles
D
fighting infection and disease
6

Which fat has only single bonds between the carbon atoms in the fatty acid?

A
saturated
B
unsaturated
C
polyunsaturated
D
monounsaturated
7

A biologist is studying a structure that is made up of two layers of phospholipids. What is she most likely studying?

A
DNA molecules
B
cell membranes
C
fats
D
wax
8

Which is a component of a phospholipid?

A
carbon ring
B
hydrophilic head
C
long-chain alcohol
D
amino acid
9

Which describes the basic structure of a fatty acid?

A
a long carbon and hydrogen chain and a phosphate group
B
a long carbon and hydrogen chain and a glycerol
C
a long carbon and hydrogen chain and a carboxyl group
D
a long carbon and hydrogen chain and an alcohol
10

Which statement best describes a direct result of damage to a phospholipid bilayer?

A
The balance of ions inside a cell will be disrupted and proteins could leak out because the phospholipid bilayer forms the cell membrane.
B
Energy storage will be disrupted because the phospholipid bilayer is responsible for storing energy in the body.
C
Chemical messages could not be sent to different parts of the body because the phospholipid bilayer forms hormones.
D
A person would be vulnerable to disease because the phospholipid bilayer helps to fight infections in the body.
11

Which is one function of steroids?

A
waterproofing leaves and feathers
B
insulating and protecting bones and organs
C
serving as chemical messengers
D
providing energy storage
12

Where is most of a healthy person’s fat stored?

A
under the skin and around organs
B
in muscle tissue and cartilage
C
inside organs and skin cells
D
in the stomach and liver
13

In an oil spill, why does the oil not mix with the seawater?

A
Lipids are hydrophobic.
B
Lipids are hydrophilic.
C
Lipids are saturated.
D
Lipids are unsaturated.

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