Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332



Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem

Antibodies are_________.

  1. a. antigen receptors
  2. b. made only by B cells
  3. c. proteins
  4. d. all of the above

Summary Introduction

Concept introduction: Antibodies are also known as immunoglobulin and are used by the immune system to neutralize the pathogens such as pathogenic bacteria and viruses. Through the variable region of Fab, an antibody recognizes the antigen. The antibody contains paratope that is specific for one particular epitope on an antigen.


Reasons for correct answer:

Antibodies are Y-shaped proteins made by the plasma cell. It is a type of antigen receptor that binds with the appropriate antigen. It is produced by the B cell when an antigen encounters the cell.

Option d. is given as “all of the above”. As antibodies are proteins, antigen receptors are made of only B cells. Therefore, option d. is correct.

Reasons for incorrect answer:

Option a. is given as “antigen receptors”.

Antibodies are antigen receptors, but they are proteins and are made of only B cells...

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