Four Levels Of Protein 4:1

Question 1

Classes of proteins are described in the introduction to which chapter?

Answer 1

Chapter 3

This is where the classes of proteins are described.

Question 2

Where are the various classes of enzymes described?

Answer 2

Section 5.1

Enzymes are described in this section.

Question 3

What method is used to separate Escherichia coli proteins?

Answer 3

Two-dimensional gel electrophoresis

Proteins from E. coli cells are separated using this method.

Question 4

What is the first dimension of separation in two-dimensional gel electrophoresis?

Answer 4

Separation by a pH gradient

Proteins migrate to their isoelectric point in this dimension.

Question 5

What is the second dimension of separation in two-dimensional gel electrophoresis?

Answer 5

Separation by size on an SDS-polyacrylamide gel

Proteins are separated by size in this dimension.

Question 6

What is the average size of polypeptides in Drosophila melanogaster?

Answer 6

About 11,000 different polypeptides with an average size similar to bacteria

Drosophila melanogaster contains this many different polypeptides.

Question 7

What are proteins traditionally called that have a hydrophobic interior and a hydrophilic surface?

Answer 7

Globular proteins

These proteins have specific characteristics and functions.

Question 8

What do fibrous proteins provide?

Answer 8

Mechanical support to cells or organisms

Fibrous proteins are a class of structural proteins with this function.