10 Questions
What is the main difference between the various antibody classes?
Their mechanism of destroying antigens
What is the primary function of the variable region of an antibody?
Giving the antibody specificity
What is the characteristic shape of an antibody molecule?
Y-shaped
How many polypeptides make up an antibody molecule?
Four
What is the name of the proteins that antibodies are classified as?
Immunoglobulins
What is the primary function of the region at the tips of the 'Y' shaped antibody molecule?
Giving the antibody its specificity
How many amino acids are present in the variable region of an antibody?
110-130
What determines the immune function of an antibody?
Constant region structure
How many major classes of antibodies are there?
5
What is the role of the constant region of an antibody?
Determining the mechanism used to destroy antigens
Study Notes
Antibody Structure
- Antibodies are proteins called immunoglobulins, consisting of four polypeptides: two heavy chains and two light chains, forming a "Y" shaped molecule.
Antibody Specificity
- The amino acid sequence at the tips of the "Y" shape (110-130 amino acids) varies among different antibodies, giving each antibody its specificity.
Antibody Function
- The constant region of an antibody determines the mechanism used to destroy antigens.
Antibody Classification
- Antibodies are divided into 5 major classes: IgM, IgG, IgA, IgD, and IgE, based on their constant region structure and immune function.
Antibody Structure
- Antibodies are proteins called immunoglobulins, consisting of four polypeptides: two heavy chains and two light chains, forming a "Y" shaped molecule.
Antibody Specificity
- The amino acid sequence at the tips of the "Y" shape (110-130 amino acids) varies among different antibodies, giving each antibody its specificity.
Antibody Function
- The constant region of an antibody determines the mechanism used to destroy antigens.
Antibody Classification
- Antibodies are divided into 5 major classes: IgM, IgG, IgA, IgD, and IgE, based on their constant region structure and immune function.
This quiz covers the structure and function of antibodies, including their composition, variability, and role in the immune system. It also explores the different classes of antibodies and their mechanisms of action.
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