Lipids Answers

17 verified answers2 views
4

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.
6

Which is a component of a phospholipid?

A
carbon ring
B
hydrophilic head
C
long-chain alcohol
D
amino acid
7

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
9

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.
10

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

A
saturated
B
unsaturated
C
polyunsaturated
D
monounsaturated
11

Which is a component of a phospholipid?

A
carbon ring
B
hydrophilic head
C
long-chain alcohol
D
amino acid
12

Which lipid acts as a chemical messenger?

A
adipose tissue
B
cholesterol
C
testosterone
D
beeswax
13

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
14

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
16

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
17

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
19

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

A
saturated
B
unsaturated
C
polyunsaturated
D
monounsaturated
20

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 BransonWhich type of bond is found in many carbon-to-carbon bonds in canola oil, but very few carbon-to-carbon bonds in butter?

Question illustration
A
C–C
B
C=C
C
C=H
D
C–H

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