Download Macromolecules Review_AK

Name:_____________________
Date of Quiz:______
Carbon and Macromolecules Review
Vocabulary: Please define these on a separate piece of paper. Look these up on
your own!
Protein
Monomer
Synthesis
Catalyst

Carbohydrate
Polymer
Lipid
Nucleic Acid
Organic Compound
Dehydration
Enzyme
What are the four classes of Macromolecules?
Carbohydrates, lipids, proteins, nucleic acids
 Draw the basic shape of each macromolecule. You can find these on the
door to 338.
Lipid -
Carbohydrate -
Protein -
Nucleic Acid -

What are the monomers of each macromolecule?
Lipid – fatty acid
Carbohydrate - monosaccharide
Protein – amino acid
1
Nucleic Acid – nucleotide

Give one function for each macromolecule.
Lipid – storage of long term energy
Carbohydrate – short term energy supply
Protein – act as an enzyme to speed up chemical reactions
Nucleic Acid – hereditary information- passed from parents to offspring

Give at least two examples of each macromolecule.
Lipid – butter, membrane
Carbohydrate – glucose, starch
Protein – catalase, muscle
Nucleic Acid – DNA, RNA

What do the prefixes, Mono, Di and Poly mean?
Mono - one
Di - two
Poly – three or more

What types of bonds, and specific names if applicable, hold these molecules
together?
2
Protein- peptide bonds (type of covalent bond)
Polysaccharide- covalent bond
DNA or RNA- covalent bond
Triglyceride- covalent bond
Lab Results/Activities:
 When testing for monosaccharides, a positive test results in the Benedicts
test turning what color?
orange

What solution is used in a polysaccharide test?
iodine
 If you have Benedicts and Iodine, how can you test for a disaccharide?
Negative result for both iodine and benedicts
Briefly explain how a polysaccharide is made from a monosaccharide. (the
paper lab)
Many monosaccharides are bonded together


When you built the DNA molecule, what was the backbone of the molecule
made of? What parts of the nucleotide faced in to connect the two
strands?
Backbone: sugar and phosphate, nitrogen bases face in to connect the two
strands

What do you think the soap did for the strawberry DNA extraction? Think
about what a cell is made up of and what soap does well in the kitchen…
Broke apart the phospholipid bilayer- made of fats- soap breaks apart fats.

What is an example of a food that might have trans fats in it? Why is there
a proposed ban on all trans fats? What is a trans fat?
3
Microwave popcorn. Trans fats are unsaturated fats that are chemically
saturated in a lab. They have been shown to clog arteries and lead to heart
attacks and strokes.

Review how to read a nutrition label.
 What is an enzyme? Relate the terms enzyme and catalyst to one another.
An enzyme is a protein that can speed up a chemical reaction. An enzyme is an
example of a catalyst.
4