Macromolecules Practice Macromolecules Practice TestTestClick F5

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11Name the 4 macromolecules

Carbohydrates, lipids, proteins, and nucleic acids

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

33What type of macromolecule is this?

LipidIt has 3 fatty acids and it is made of

carbon, hydrogen, and a little bit of oxygen

44What type of macromolecule is

this?

ProteinIt is made of carbon, hydrogen,

oxygen, and nitrogen

55What type of macromolecule is this?

Nucleic acidIt has a sugar, base, and phosphate

group

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

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

88What is the chemical formula for

this structure?

C5H10O5

To get that, count the number of each type of atom in the picture

99What process is being used to

join these two monomers?

Dehydration synthesisThis process joins monomers by

removing water molecules

1010What process is being used to split

this polymer?

HydrolysisHydrolysis uses a water molecule to

break bonds

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

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

1313What macromolecule is the

primary energy source for all living things?

CarbohydratesLipids can also store energy, but

carbohydrates are used most frequently

1414What is the chemical formula for

glucose?

C6H12O6

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)

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)

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)

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)

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

2020What is the monomer, function,

and test for lipids?

Monomer: Fatty acidsFunction: Makes up membranesTest: Brown Paper Bag

2121What is the monomer, function,

and test for proteins?

Monomer: Amino acidsFunction: Controls cell processesTest: Biuret

2222What is the monomer, function,

and test for nucleic acids?

Monomer: nucleotidesFunction: stores genetic

informationTest: no test

2323Name an example of a simple

sugar (also known as a monosaccharide, which is a type of carbohydrate)

Glucose, fructose, galactose

2424Name an example of a lipid

Fats, oils, waxes

2525Name an example of a nucleic

acid

DNA

2626Name a food high in

monosaccharides (simple sugars)

Candy, sugar, soda

2727Name a food high in starch.

Bread, pasta, cornstarch, potatoes

2828Name a food high in lipids

Butter, egg yolks, oil

2929Name a food high in proteins

Egg whites, meat

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