Worksheet: Proteins & Nucleic Acids
Proteins: Amino Acids, Polypeptides, & Proteins
1. Fill in the table below.
Type
Enzymatic Proteins
An Overview of Protein Functions
Function
Diagram
Examples
Selective
Digestive enzymes
acceleration of
catalyze the
chemical reactions.
hydrolysis of bonds
in food molecules.
Storage Proteins
Hormonal Proteins
Contractile and
Motor Proteins
Defensive Proteins
Transport Proteins
Receptor Proteins
Structural Proteins
2. Identify the monomers of protein.
3. Identify the polymers of protein.
4. Define amino acid.
5. Amino Acid Common Characteristics.
Identify the common characteristics that
all amino acids have.
6. Amino Acid Unique Characteristics.
Identify the characteristic that makes
each amino acid unique.
7. How many groups of amino acids provide the basis for all proteins in living
organisms?
8. Fill in the table below.
Alanine
Arginine
Amino Acids
ala
arg
asn
Aspartic acid
Cysteine
Glutamic acid
Isoleucine
Leucine
Lysine
Methionine
Phenylanine
Threonine
gln
gly
his
ile
leu
pro
ser
thr
trp
Tyrosine
Valine
9. Define polypeptide.
10. Define peptide bond.
11. Define protein.
12. Fill in the table below.
Four Level of Structure in Proteins
Structure
Description
Examples| Diagram
The primary structure
Primary Structure
of any protein is simply
its sequence of amino
acids. This sequence
determines everything
else about the protein’s
final shape.
Secondary Structure
Beta pleated sheet
Alpha helix
Random coil
Tertiary Structure
Quaternary Structure
Protein Denaturation
13. Define denature (biochemistry).
14. Explain how pH and temperature changes can cause a protein to denature.
Lipoproteins and Glycoproteins
15. Define lipoproteins.
16. Describe high density lipoproteins (HDLs).
17. Describe low density lipoproteins (LDLs).
18. Define glycoproteins.
Nucleic Acids
19. Define gene.
20. Define nucleic acids.
21. Identify the monomers of nucleic acids.
22. Identify the polymers of nucleic acids.
23. Define deoxyribonucleic acid (DNA).
24. Define ribonucleic acid (RNA).
Nucleotides: The Building Blocks of DNA
25. The nucleotide is the basic unit of DNA.
Describe the structure of a nucleotide.
26. Define pyrimidine and identify the pyrimidine nitrogenous bases.
27. Define purines and identify the purine nitrogenous bases.
28. Identify the sugar, nitrogenous bases, and strand structure of DNA.
29. Identify the sugar, nitrogenous bases, and strand structure of RNA.