Answer:
DNA
Explanation:
The DNA of a cell is found within the nucleus. It is organised into units known as chromosomes, each containing a long DNA molecule which is associated with various proteins.
Answer:
Explanation:A vaccine works by training the immune system to recognize and combat pathogens, either viruses or bacteria. To do this, certain molecules from the pathogen must be introduced into the body to trigger an immune response. These molecules are called antigens, and they are present on all viruses and bacteria.
Answer:
The correct answer is immunoglobulin E (IgE).
Explanation:
Immunoglobulin E are the antibodies that produced by the immune system in response of allergens. These antibodies travels to cells that cause allergic reaction by releasing chemicals. Allergic response generally takes place in nose, chest ear and skin and other.
IgE can be specific for one type of allergen or more than one type of allergens based on the individual immune response and different type of antibodies they produce.
Thus, the correct answer is immunoglobulin E.