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