Chapter 8 - Proteins

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Terms to Know in This Chapter:

peptide [PEP tide]

dipeptide

polypeptide

radical

primary structure

secondary structure

tertiary structure

quaternary structure

conformation [CON for MAY shun]

alpha helix

pleated sheet

denaturation [DEE nature AY shun]

silk

hair

enzyme [IN zyme]

hemoglobin [HE mo globe in]

What You Need to Know:

You should be able to:

1. detail the building blocks of proteins,
2. explain what distinguishes one amino acid from another,
3. explain what all amino acids have in common,
4. distinguish among primary, secondary, tertiary, and quaternary structures of proteins (conformations),
5. explain the term denaturation and how it relates to proteins,
6. explain how you may denature a protein,
7. explain the various conformations of proteins and give an example of each, and
8. distinguish between the alpha helix and beta pleated sheet form of secondary structure proteins.
   

Exercises: Fill in the Blank.

1. The building blocks of proteins are .
2. All amino acids have four things in common.
   A.
   B.
   C.
   D.
3. The only part of an amino acid that may differ from one to another is called the
4. Another name for an amino acid is
5. More than two amino acids joined together by dehydration synthesis is called a .
6. The linear sequence of amino acids is referred to as the structure or conformation of a protein (primary, secondary, tertiary, quaternary)
7. The pleated sheet and the alpha helix are examples of this type of conformation.
8. Hemoglobin is an example of conformation in proteins.
9. Enzymes are globular proteins with a type of conformation.
10. is the process when one conformation of protein is changed to the next less complicated conformation.
11. There are four major ways to denature a protein. They are
    A.
    B.
    C.
    D.

Exercises: Multiple Choice. Select the Best Answer.

1.

2.

3.

1. Which of the above represents a dipeptide?
   (1)
   (2)
   (3)
   
2. Which of the above represents a beta pleated sheet protein??
   (1)
   (2)
   (3)
   
3. Which of the above represents an amino acid?
   (1)
   (2)
   (3)
   
4. Which of the following is the linear sequence of amino acids?
   (1) primary structure
   (2) secondary structure
   (3) tertiary structure
   (4) quaternary structure
   (5) none of the above