Download Lipids MCAS Practice Name: Date: 1. All living things contain which

Lipids MCAS Practice
Name:
1.
2.
3.
Date:
All living things contain which element?
A.
helium
B.
C.
copper
D. carbon
5.
sodium
Many aquatic birds secrete waxy organic substances
that repel water. The birds use these substances to
coat their feathers. An analysis of these substances
would reveal that they are composed mostly of
Which phrase correctly describes cellulose?
A.
A polymer made of glucose
A.
lipids.
B.
proteins.
B.
A branched form of sucrose
C.
carbohydrates.
D. nucleic acids.
C.
A disaccharide
D. A simple sugar
Fatty acids are one of the products that result from
the action of lipase in the digestive system. What
is one way that fatty acids are used in the body?
A.
for storing energy
B.
for encoding genetic information
C.
as the building blocks of antibodies
6.
D. as the building blocks of hemoglobin
4.
The structural formula of cellulose is shown.
7.
Which type of molecule in the yolk of a chicken
egg provides the most energy for a developing
chick?
A.
lipid
B.
nucleic acid
C.
salt
D. water
8.
9.
page 1
Which group of organic compounds contains fatty
acids?
A.
carbohydrates
B.
lipids
C.
nucleic acids
D. proteins
The molecules made by living cells are mainly
assembled around which element?
A.
Calcium
B.
Carbon
C.
Hydrogen
D. Oxygen
All of the following are organic molecules
except—
A.
protein.
B.
lipid.
C.
carbohydrate.
D. salt.
Which of the following is not a carbohydrate?
A.
Cellulose
B.
Lipids
C.
Monosaccharides
D. Starch
10.
All carbohydrates are made of—
A.
carbon, hydrogen, and oxygen.
B.
glucose, sucrose, and fructose.
C.
cellulose, glycogen, and starch.
15.
D. guanine, alanine, and cytosine.
11.
16.
Which of the following lists of elements contains
the most common elements in organic compounds?
14.
potato chips
B.
bread
C.
sugar
D. carrots
An iodine solution is placed on the cut side
of a potato. Within seconds, a blue-black color
appears. What is most likely occurring?
calcium, iron, and potassium
A.
a positive test for proteins
B.
carbon, hydrogen, and oxygen
B.
a positive test for starches
C.
chlorine, phosphorus, and sodium
C.
a negative test for proteins
D. a negative test for starches
What do disaccharides, such as sucrose, and
polysaccharides, such as starch, have in common?
A.
They are lipids made of fatty acids.
B.
They are proteins made of amino acids.
C.
They are nucleic acids made of nucleotides.
17.
D. They are carbohydrates made of simple
sugars.
13.
A.
A.
D. copper, magnesium, and sulfur
12.
The brown paper test for lipids is positive when
food is placed on the paper and a spot forms
which will allow light to pass through it. Which
food would give the most positive test for lipids?
proteins.
B.
C.
sugars.
D. alcohols.
A.
Carbon forms crystal structures under certain
conditions.
B.
Carbon can exist as a solid, liquid, or gas.
C.
Carbon bonds in many ways with itself to
form chains.
D. Carbon exists in radioactive forms.
Lipids are composed of fatty acids and—
A.
What characteristic of carbon (C) makes it
essential to living organisms?
18.
glycerol.
Which of the following is the main reason that
humans need to include carbohydrates in their
diet?
A.
The structure of which molecule contains a
glycerol backbone?
Carbohydrates are broken down in cells for
energy.
B.
Carbohydrates combine to form many di erent
proteins.
A.
Protein
B.
C.
C.
Nucleic acid
D. Lipid
Carbohydrates act as catalysts to speed up
chemical reactions.
Carbohydrate
D. Carbohydrates are the building blocks for cell
growth and repair.
page 2
Lipids MCAS Practice
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Lipids MCAS Practice
1.
Answer:
D
2.
Answer:
A
3.
Answer:
A
4.
Answer:
A
5.
Answer:
A
6.
Answer:
B
7.
Answer:
B
8.
Answer:
D
9.
Answer:
B
10.
Answer:
A
11.
Answer:
B
12.
Answer:
D
13.
Answer:
B
14.
Answer:
D
15.
Answer:
A
16.
Answer:
B
17.
Answer:
C
18.
Answer:
A
10/04/2016