Question

12. Antimicrobials may a. produce allergic reactions b. produce toxic effects not only to the microbe but to the hoat c. kill bacteria in our bodies all the above 13. All of the following pertain to the role ofactivated helper T cells in cellular mediatesd immunity except a. differentiation into memory Th cells b. recognize MHC with antigenic peptide on macrophages c. activate Te cells indirectly lead to cytolysis through complement e. indirectl y lead to phagocytosis of large microorganisms such as parasites patient has Grave's disease (a long term disease), which occurs when the body has to be recognized as foreign, 14. recognizes the thyroid as foreign and attacks it. For this process to oceur, the thyroid's produced and the thyroid attacked by a. Cell surface markers, IgE, eosinophils b. DNA, IgM, pmns c. Lipids, IgA, macrophages d. Carbohydrates, IgM, pmns e. MHC, IgG, macrophages 5. Bacteria produce molecules called siderophores to capture iron; humans can count his by producing a. iron b. transferrins c. antigens d. iron-degrading enzymes e none of the above 16. If scientists were to make antiviral agents for bacteriophages, all of the follow could be effective except? a. An agent that blocks extracellular uncoating b. An agent that blocks nucleic acid synthesis c. An agent that blocks intracellular uncoating d. All the above would be effective antiviral agents agents for bacteri e. A & B

Answer 1

12.The word Antimicrobial itself describes anti-against, microbial-microorganism.The antimicrobial has the ability to kill the microorganisms or cease its growth.

Ans.c.kill bacteria in the body

13.Helper T cells don't directly kill the infected cells ratger it stimulates the T cells to kill the infected cells,or stimulate the B cells to produce antibodies to kill the cells which are infectious.

Ans.a.differentiation into memory Th cells

14.Graves disease is an autoimmune disorder in which antibodies are prodiced against TSH.The antibody IgG leads to release of increased thyroid hormone .Here first it recognizes the HLA as foreign body and to fight it the macrophage are released

Ans.E.MHC,GiG,macrophages

15.Siderophores has a strong iron binding capabilities and in human it is aided in mobilization.This microbes or bacteria can recognise certain iron in overload.

Ans.c.antigens