1.) A highly specific adaptive immune response is present prior to exposure to a

Question

1.) A highly specific adaptive immune response is present prior to exposure to a pathogen or its products. T or F

2.) Mature T cells are coated with antibodies that act as antigen receptors. T or F

3.) The phagocytes responsible for the innate immune response also initiate adaptive immunity. T or F

4.) Exotoxins produced by Staphylococcus and Streptococcus are known as superantigens; they bind to a site on the TCR that is outside the antigen-specific TCR binding site. T or F

5.) Leukocytes are cells specialized for antibody production and cell-mediated immunity T or F

6.) Cytokines affect only T or B lymphocytes. T or F

7.) An endemic disease is constantly present, usually at low incidence, in a population. T or F

8.) MHC proteins function primarily as antigen-presenting molecules that bind pathogen-derived antigens and display them for interaction with TCRs. T or F

9.) During the process of DNA replication, both DNA polymerase and RNA polymerase are involved in eventually creating the new daughter strand of DNA. T or F

10.) Replication begins at the origin of replication or ORI and transcription begins at the first codon for methionine. T or F

11.) The process of mapping, sequencing and analysis of proteins is called genomics. T or F

12.) The heavy chain constant domains of a given immunoglobulin molecule define its class. T or F

13.) Leukocidins kill phagocytes and it is the dead phagocytes that make up much of the substance of pus. T or F

14.) The primary antibody response is generally detectable within 24 hours. T or F

15.) The term virulence refers to the ability of a host cell to defend itself by using innate systems like the interferon system. T or F

Explanation / Answer

1)False , it is present after initial pathogen attack

2)False, mature T cells are not coated with antibodies

3)True

4)True

5)False

6)False

7)False

8)True

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