Immunoglobulin Structure and Function

The video explains the role of immunoglobulins, also known as antibodies, in the immune system. These Y-shaped molecules bind to antigens and immune cells, facilitating the destruction of pathogens. Immunoglobulins are composed of heavy and light chains, forming variable tips for antigen binding. There are five types of immunoglobulins, each with specific structures and functions, such as IGD, IGA, and IGM, which can form pentamers.

What is another name for immunoglobulins?

• Antibodies

• Microbes

• White cells

• Antigens

What shape are IG molecules typically described as?

• X-shaped

• Z-shaped

• L-shaped

• Y-shaped

What are the two types of chains that construct immunoglobulins?

• Gamma and Delta chains

• Alpha and Beta chains

• Heavy and Light chains

• Kappa and Lambda chains

What is the role of the affector in an IG molecule?

• To float in the plasma

• To destroy white cells

• To bind with immune system cells

• To bind with antigens

What is the function of the variable tips in IG molecules?

• To destroy white cells

• To form a stable receptor point

• To float in the plasma

• To adapt to a wide range of antigens

How many basic types of immunoglobulins are there?

• Five

• Four

• Six

• Three

What determines the Y chain structure of each type of IG?

• The type of antigen it targets

• The type of white cell it binds to

• The size of the IG molecule

• The number of heavy chains

Which immunoglobulin type uses a Double Y chain?

• IGM

• IGA

• IGD

• IGG

What is unique about the standalone IGM molecule?

• It is found only in plasma

• It binds with antigens

• It forms a pentamer

• It forms a single Y chain

Which immunoglobulin type can form a pentamer?

• IGM

• IGA

• IGD

• IGG