macromolecules practice test click f5 use the arrow keys to navigate the test
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Macromolecules Practice Macromolecules Practice TestTestClick F5
Use the arrow keys to navigate the test
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11Name the 4 macromolecules
Carbohydrates, lipids, proteins, and nucleic acids
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22What kind of macromolecule is this?
CarbohydrateIt’s formula is C6H12O6 so it has the
1:2:1 ratio that carbohydrates always have
Plus, it is in a ring-shape
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33What type of macromolecule is this?
LipidIt has 3 fatty acids and it is made of
carbon, hydrogen, and a little bit of oxygen
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44What type of macromolecule is
this?
ProteinIt is made of carbon, hydrogen,
oxygen, and nitrogen
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55What type of macromolecule is this?
Nucleic acidIt has a sugar, base, and phosphate
group
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66How many bonds does carbon
make with other atoms?
4It can make single bonds like C-
HOr it can make double bonds like
C=O
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77How can you tell if a molecule is
organic or not?
Organic molecules have bonds between carbon atoms
The picture on the left is organic but the picture on the right isn’t
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88What is the chemical formula for
this structure?
C5H10O5
To get that, count the number of each type of atom in the picture
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99What process is being used to
join these two monomers?
Dehydration synthesisThis process joins monomers by
removing water molecules
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1010What process is being used to split
this polymer?
HydrolysisHydrolysis uses a water molecule to
break bonds
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1111What macromolecule is made
when many amino acids are joined together?
ProteinsProteins are sometimes called
polypeptides because the bonds between amino acids are called peptide bonds
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1212 What types of macromolecules are represented by
these formulas? A. C15H25O3
B. C5H10O5
C. C6H12O3N2
D. C5H18O6N4P2
A: Lipid◦ Lipids have C, H, and only a little bit of O
B: Carbohydrate (or sugar/saccharide)◦ Carbohydrates have C, H, and O in a 1:2:1 ratio
C: Protein (or polypeptide)◦ Proteins include nitrogen
D: Nucleic acid◦ Nucleic acids include both nitrogen and phosphorus
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1313What macromolecule is the
primary energy source for all living things?
CarbohydratesLipids can also store energy, but
carbohydrates are used most frequently
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1414What is the chemical formula for
glucose?
C6H12O6
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1515The iodine test is a test for
_____. When it is negative it is ____ (color) and when it is positive it is ____ (color)
StarchBrown (negative color)Purple (positive color)
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1616The Benedict test is a test for
_____. When it is negative it is ____ (color) and when it is positive it is ____ (color)
Sugar (or monosaccharides)Blue (negative color)Yellow/Orange/Green (positive
color)
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1717The Biuret test is a test for
_____. When it is negative it is ____ (color) and when it is positive it is ____ (color)
Protein (or polypeptide)Blue (negative color)Purple (positive color)
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1818The Brown paper bag test is a
test for _____. When it is negative it is ____ (color) and when it is positive it is ____ (color)
LipidsNormal looking paper (negative)See through spot (positive)
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1919What is the monomer, function,
and test for carbohydrates?
Monomer: Sugar (if making starch or another polysaccharide)
Function: Energy source, plant structures
Test: ◦Sugar = Benedict’s test◦Starch = Iodine
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2020What is the monomer, function,
and test for lipids?
Monomer: Fatty acidsFunction: Makes up membranesTest: Brown Paper Bag
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2121What is the monomer, function,
and test for proteins?
Monomer: Amino acidsFunction: Controls cell processesTest: Biuret
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2222What is the monomer, function,
and test for nucleic acids?
Monomer: nucleotidesFunction: stores genetic
informationTest: no test
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2323Name an example of a simple
sugar (also known as a monosaccharide, which is a type of carbohydrate)
Glucose, fructose, galactose
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2424Name an example of a lipid
Fats, oils, waxes
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2525Name an example of a nucleic
acid
DNA
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2626Name a food high in
monosaccharides (simple sugars)
Candy, sugar, soda
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2727Name a food high in starch.
Bread, pasta, cornstarch, potatoes
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2828Name a food high in lipids
Butter, egg yolks, oil
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2929Name a food high in proteins
Egg whites, meat
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3030What two tests would a greasy
hamburger test positive for?
Biuret (because it has meat and therefore is high in protein) and Brown Bag (because it is greasy and therefore has lipids)
It would not test positive for iodine because it doesn’t have starch
It would not test positive for Benedict’s because it doesn’t have sugars