Question

the antibody molecule consists of how many polypeptide chains, including light and heavy chains?
6
5
3
4
2
question 12 1 pts
there are three major immunoglobulin classes: igm, iga and igd
true
false
question 13 1 pts
the function of lymphatic tissue is to destroy pathogens that
enter the body through natural openings such as the nose
are in lymph from the head and neck
are in lymph from the arms and legs
enter the body through breaks in the skin

Explanation:

• For the first question, an antibody molecule consists of 4 polypeptide chains (2 heavy - chains and 2 light - chains).
• For the second question, the major immunoglobulin classes are IgM, IgA, IgD, IgG, and IgE, so the statement is false.
• For the third question, lymphatic tissue filters lymph and destroys pathogens in lymph from the head and neck, arms, and legs.

Answer:

• Question 11: D. 4
• Question 12: B. False
• Question 13: Second, third and fourth options (are in lymph from the head and neck, are in lymph from the arms and legs, enter the body through breaks in the skin)