Download Macromolecule Wkst

Macromolecules Worksheet
Name: ________________________Per. 1 2 3 4
Part A. Classify each as a carbohydrate, protein, lipid or nucleic acid.
1.
starch
10.
polysaccharide
2.
cholesterol
11.
phospholipid
3.
steroid
12.
glycerol
4.
glycogen
13.
monosaccharide
5.
nucleotide
14.
cellulose
6.
RNA
15.
amino acid
7.
polypeptide chain
16.
enzyme
8.
glucose
unsaturated fatty
acid
17.
saturated fat
18.
DNA
9.
Part B. Identify the specific molecule (use the above terms) from each description. Some terms may
be used more than once.
19.
forms the cell membrane of all cells
20.
speeds up chemical reactions by lowering activation energy
21.
one sugar
22.
cells convert this into ATP
23.
monomer of proteins
24.
steroid that makes up part of the cell membranes
25.
3-carbon “backbone” of a fat
26.
monomer of nucleic acids
27.
forms the cell wall of plant cells
28.
provides long-term energy storage for animals
29.
sex hormones
Part C. Which specific molecule (saturated fat, unsaturated fat, protein, glucose, starch, cellulose) is
each food mostly made of?
36.
almond
43.
wheat
37.
spinach
44.
celery
38.
beef jerky
46.
cranberries
39.
bacon
47.
egg white
40.
noodles
48.
table sugar
41.
orange juice
49.
popcorn
42.
cheese
50.
lobster
Part D. Beside each carbohydrate molecule, write whether is monosaccharide, disaccharide, or
polysaccharide.
1.
2.
3.
Part E. Each of the following structures below shows a fatty acid molecule. On the line, identify the
fatty acid as saturated, unsaturated, or polyunsaturated.
1.
2.
3.
Part F. Macromolecule questions
1. All organic compounds contain the element
.
2. What is the difference between monosaccharide, disaccharide, & polysaccharide?
3. What 3 elements make up carbohydrates?
a.
b.
c.
4. (Circle one) Lipids are polar or non-polar.
5. (Circle one) Lipids are or aren’t soluble in water
6. What kind of bond holds water molecules together and strands of DNA?
7. (Circle one) Enzymes typically end in –ase or –ose
8. (Circle one) Sugars tend to end in –ase or –ose
9. What are the 2 types of sugars found in nucleic acids?
a. DNA sugar:
b. RNA sugar:
10. (Circle one) The reaction below is showing hydrolysis or dehydration synthesis?
Maltose + water  Glucose + Glucose
a. What are the reactants?
11. (Circle one) The reaction below is showing hydrolysis or dehydration synthesis?
Glucose + Glucose  Maltose + water
a. What are the products?
Part G. Dehydration Synthesis & Hydrolysis
Below is an example of dehydration synthesis. In dehydration synthesis, a hydrogen atom from
one molecule joins with a hydroxyl group (-OH) from another molecule to form water, leaving two
molecules bonded to the same oxygen atom. For example, when glucose and glucose combine
by dehydration synthesis, they form maltose and water.
+
H 2O
+
Glucose
Glucose
Maltose
Below is an example of hydrolysis. Complex organic molecules are broken down by the addition of
the components of water – H+ and OH-.
water
1. What are the products of the hydrolysis reaction?
2. What are the reactants of the dehydration synthesis reaction?
3. How are the reactions in #5 and #6 related?
4.
Look at the three reactions below. Which reaction reaction(s) is hydrolysis taking
place?
a. How do you know?
5.
Look at the three reactions below. Which reaction(s) is dehydration synthesis taking place
in?
a. How do you know?