Lipids Answers

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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
2
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Lipids exhibit different characteristics based on their structures. The image shows different examples of lipids, such as solid butter and liquid canola oil.Photo by NIH/Bill BransonCanola oil contains more unsaturated fat than butter. Which type of bond is found in unsaturated fatty acids?

Question illustration
A
A single bond between two carbon atoms.
B
A double bond between two carbon atoms.
C
A single bond between a carbon atom and a hydrogen atom.
D
A double bond between a carbon atom and an oxygen atom.
3

Which lipid acts as a chemical messenger?

A
adipose tissue
B
cholesterol
C
testosterone
D
beeswax
4

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
5

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
6

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
7

Which is a component of a phospholipid?

A
carbon ring
B
hydrophilic head
C
long-chain alcohol
D
amino acid
8

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.
9

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
10

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

A
saturated
B
unsaturated
C
polyunsaturated
D
monounsaturated

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