You Are Vaccinated Against Chickenpox as an Infant and Then

question 42

Essay

You are vaccinated against chickenpox as an infant and then when you are six you encounter the virus as one of your friends is suffering from chickenpox. How does your response to the vaccine (e.g.,your first exposure to the antigen)differ from the response to the virus when you are six (e.g.,your second exposure to the antigen)? What antibodies would be in your serum during the first and second response? If you don't get chickenpox when you were six even though you were exposed,is the vaccine a T-independent antigen or a T-dependent antigen?

Recognize the significance of the semi-conservative model of DNA replication.

Identify the enzymes and processes involved in DNA repair mechanisms.

Grasp the concept of Okazaki fragments and their formation in the lagging strand.

Understand the biochemical properties of nucleotides and the rules of base pairing.

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Definitions:

Repeating Units

Sequential segments of the same structure in a polymer, which repeat numerous times to form the polymer chain.

Mechanism

Describes the step-by-step process through which reactants are converted to products in a chemical reaction, including the breaking and formation of bonds.

Intermediates

Molecules or ions that appear in the middle stages of a chemical reaction but do not appear in the overall reaction equation.

Electrons

Subatomic particles with a negative electrical charge, found in orbitals surrounding an atom's nucleus, and participating in chemical bonding and conductivity.