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Biochemistry: Carbohydrates And Lipids
Test Description: Review of carbon, carbohydrates, lipids.
Instructions: Answer all questions to get your test result.
1) One function of a carbohydrate is
A
to keep the heart functioning smoothly.
B
to control the rate of reactions
C
to store and transport genetic material.
D
to provide the body with immediate energy.
2) The 3 types of carbohydrates are
A
glycerol, monosaccharides, polysaccharides
B
disaccharides, monosaccharides,glycerol
C
glycerol, polysaccharide, fatty acid
D
monosaccharides, polysaccharides, disaccharides
3) What elements make up a carbohydrate?
A
carbon, hydrogen, oxygen
B
hydrogen, calcium, oxygen
C
carbon, potassium, oxygen
D
calcium, potassium, oxygen
4) Glycogen, a polysaccharide in your muscles and liver, can be broken down into glucose molecules by
A
isomerization
B
hydrolysis
C
dehydration synthesis.
D
polymerization
5) Large molecules that form when many monosaccharides bond together are called
A
lipids
B
monosaccharides
C
polysaccharides
D
sugars
6) The polysaccharide that provides structural support in plants is called
A
glycogen
B
cellulose
C
chitin
D
sucrose
7) Single sugars, called monosaccharides, supply ____________ to cells.
A
health
B
insulation
C
protection
D
energy
8) Which of the following is a carbohydrate?
A
wax
B
DNA
C
oil
D
glucose
9) The elements that make up a carbohydrate occur in a _______________ ratio.
A
2:2:1
B
1:3:1
C
1:2:1
D
1:1:1
10) Lipids are made up of mostly ____________________, and a few ______ atoms.
A
N and H, O
B
C and H, O
C
C and O, H
D
C and N, H
11) Organic molecules are those that contain ______________ covalently bonded to other atoms.
A
hydrogen
B
oxygen
C
carbon
D
nitrogen
12) Lipids are molecules that contain
A
carbon, nitrogen, oxygen
B
carbon, hydrogen, oxygen
C
carbon, hydrogen, nitrogen
D
carbon, hydrogen, oxygen, nitrogen
13) Which of the following is NOT a function of lipids?
A
chemical messenger molecules
B
compose the cell membranes
C
short-term energy storage
D
long-term energy storage
14) The monomers of lipids are _________________ and ________________.
A
glycerol, fatty acids
B
fats, oils
C
amino acids, glycogen
D
monosaccharides, disaccharides
15) Lipids are _________________________, which means______________________.
A
polar, they don't mix with water.
B
hydrophilic, they don't mix with water.
C
hydrophobic, they don't mix with water.
D
polar, they mix well with water.
16) The cell membrane of your cells is made up of lipids called _______________.
A
proteins.
B
triglycerides.
C
fatty acids.
D
phospholipids.
17) A polymer is a large molecule made up of smaller units called
A
cells.
B
monomers.
C
isomers.
D
macromolecules.
18) What does it mean for a molecule to be hydrophobic?
A
water-loving
B
water-fearing
C
polar
D
it has a charge
19) If a lipid molecule is unsaturated, it will have a/an ______________ in the fatty acid tail.
A
phosphate group
B
extra oxygen atom
C
extra carbon atom
D
double bond
20) Which is TRUE of the structure of a lipid molecule?
A
It contains twice as many H as O atoms.
B
It is generally a ring-shape.
C
It is a double helix shape.
D
It usually contains a long chain of C and H atoms.
*select an answer for all questions
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