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Lipid Structure

Total questions: 46

Worksheet time: 12mins

Name
Class
Date
1.

What is the lipid present in the cell membrane called?

a)

Triglyceride

b)

Glycerol

c)

Phospholipid

d)

Fatty acid

2.

Lipids are grouped into these groups.

a)

Monosaccharides, disaccharides or polysaccharides

b)

Saturated, Monounsaturated and Polyunsaturated

c)

Unsaturated

d)

Monounsaturated, Polyunsaturated

3.

These molecules contain a double bond between two carbon atoms.

a)

Monounsaturated fatty acids

b)

Cis Polyunsaturated fatty acids

c)

Saturated fatty acids

d)

Trans Polyunsaturated fatty acids

4.

Fatty acids with hydrogen atoms artificially added to the double bond is called...

a)

Monounsaturated fatty acids

b)

Trans Polyunsaturated fatty acids

c)

Cis Polyunsaturated fatty acids

d)

Saturated fatty acids

5.

The structure of _____________ is slightly bent.

a)

Monounsaturated fatty acids

b)

Cis Polyunsaturated fatty acids

c)

Trans Polyunsaturated fatty acids

d)

Saturated fatty acids

6.

A triglyceride molecule is synthesized in the ________________ reaction of glycerol and 3 fatty acids.

a)

hydrolyzing

b)

condensation

7.

Triglyceride is composed of:

a)

Glycerol, 2 fatty acids

b)

3 Glycerols and 1 fatty acids

c)

3 Glycerides

d)

Glycerol, 3 fatty acids

8.

Triglycerides are formed by

a)

Hydrogen bonding

b)

Covalent bonding

c)

Ester linkage

d)

Glycosidic bonds

9.
Which of the following molecules make up the basic structure of a cell membrane?
a)
waxes
b)
steroids
c)
fatty acids
d)
phospholipids
10.
Carbon chains are principal features of both carbohydrates and lipids.  What is the primary difference between these two types of macromolecules?
a)
Lipids always have longer carbon chains than carbohydrates.
b)
Carbohydrates cannot form rings like lipids can.
c)
Lipids provide energy, but carbohydrates cannot.
d)
Carbohydrates form ring structures, lipids form long chains
11.
What are different examples of lipids?
a)
monosaccahrides, disaccharides, starch, cellulose
b)
dipetide, polypeptide, amino acids
c)
DNA, RNA, ATP
d)
triglycerides, waxes, steroids, phospholipds
12.
This molecules is a
a)
amino acid
b)
nucleic acid
c)
carbohydrate
d)
lipid
13.
Saturated fats are __________ at room temperature.
a)
liquid
b)
gases
c)
plasma
d)
solid
14.
Which macromolecule is this?
a)
carbohydrate
b)
lipid
c)
protein
d)
nucleic acid
15.
Which of the following is a lipid?
a)
cholesterol
b)
cellulose
c)
glucose
d)
protein
16.
The characteristic that all lipids have in common is----
a)
made of lots of double bonds
b)
acidic when mixed with water
c)
no high energy content
d)
do not dissolve in water
17.
Which element is not found in lipids?
a)
carbon
b)
sulfur
c)
hydrogen
d)
oxygen
18.
All things need lipids
a)
true
b)
false
19.
Which one of the following would give you the most lipids?
a)
steak
b)
carrot
c)
lettuce
d)
pasta
20.
Lipids are
a)
hydrophilic
b)
hydrophobic
c)
neither
d)
both
21.
Which is a function of lipids?
a)
energy
b)
insulation
c)
hormone production
d)
all are!
22.
Which type of fat is the worst for a humans health?
a)
saturated fats
b)
unsaturated fats
c)
trans fat
23.
These are the monomers (building blocks) of lipids?
a)
nucleotides
b)
amino acids
c)
disaccharides
d)
fatty acids
24.
Which of the following is NOT a function of lipids?
a)
long term energy
b)
provides flavor in food
c)
used to make hormones
d)
building of muscles
25.
This picture shows what type of lipid?
a)
unsaturated fat
b)
wax
c)
saturated fat
d)
steroid
26.
A "kinky structure" due to the double bonds between carbon atoms creates a lipid known as what?
a)
saturated fat
b)
wax
c)
steroid
d)
unsaturated fat
27.
Testosterone and estrogen are types of...
a)
Waxes
b)
Steroids
c)
Cholesterol
d)
Carbohydrates
28.
Butter is a/an...
a)
Saturated fat
b)
Unsaturated fat
c)
Trans-fat
d)
Saturated protein
29.
Hydrophilic compounds are...
a)
Attracted to water
b)
Repel water
c)
Don't exist
30.
How do lipids function for cells?
a)
store information
b)
store energy
c)
breakdown wastes
d)
join with substrates
31.
Which biomolecule is often stored in the body's tissues as energy?
a)
proteins
b)
carbohydrates
c)
lipids
d)
nucleic acids
32.
What do complex carbohydrates break down into during digestion?
a)
ATP
b)
enzymes
c)
simple sugars
d)
amino acids
33.
What are the largest carbohydrates called?
a)
monosaccharides
b)
disaccharides
c)
oligosaccharides
d)
polysaccharides
34.
Which biomolecule serves as the main energy source of organisms?
a)
proteins
b)
nucleic acids
c)
lipids
d)
carbohydrates
35.
What are two main functions of fats within the body?
a)
energy storage and cellular transport
b)
energy storage and insulation
c)
building blocks for DNA and hormones
d)
storing cellular information and in the cell membrane
36.
The "tails" of the molecules in the figure orient away from water. Which of the following describes the tail's movement away from water?
a)
polar
b)
adhesive
c)
polar
d)
nonpolar
37.
Lipid based hormones are __________.
a)
Sterols  (cholesterol, testosterone, estrogen and progesterone)
b)
Insulin
c)
serotonin
d)
neurotransmitters
38.
An unsaturated lipid contains, ________
a)
more oxygen than hydrogen
b)
double bonds
c)
ionic bonds
d)
only one fatty acid
39.
Animals store glucose in the form of
a)
cellulose
b)
glycogen
c)
wax
d)
lipids
40.
The name of the enzyme that breaks down fats is  _______________
a)
lipase
b)
amylase
c)
protease
d)
DNAase
41.
What is essential for the breakdown of fat molecules?
a)
bile
b)
simple sugars
c)
polysarrcharide
d)
amylase
42.

The portion of the lipid's monomer that is the same in each lipid

a)

Glycerol

b)

Fatty acid

c)

Amino acid

d)

Nucleotide

e)

Monosaccharide

43.

The portion of the lipid's monomer that is different in each lipid

a)

Glycerol

b)

Fatty acids

c)

Amino acid

d)

Nucleotide

e)

Monosaccharide

44.

A lipid molecule that has 3 fatty acids attached to a glycerol molecule

a)

Triglyceride

b)

Cholesterol

c)

Steroid

d)

Phospholipid

45.

These types of lipids contain multiple double bonds in the fatty acid chain

a)

Saturated

b)

Monounsaturated

c)

Polyunsaturated

46.

The heads of phospholipids are

a)

Hydrophilic

b)

Hydrophobic

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