Microbiology

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created 8 years ago by kmaddy
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Microbiology
Chapter 17
Grade levels:
College: Second year
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1

Type of protection provided by the injection of diphtheria toxiod.

artifically acquired active immunity

2

The type of protection provided by the injection of antitrabies serum

artifically acquired passive immunity

3

Type of protection resulting from recovery from an infection

naturally acquired active immunity

4

A newborn's immunity to yellow fever.

naturally acquired passive immunity

5

Antibodies that protect the fetus and newborn?

IgG

6

The first antibodies synthesized; especially effective against microorganisms

IgM

7

Antibodies that are bound to mast cells and involved in allergic rxns.

IgE

8

What is the correct sequence to elicit an antibody response:
1)TH recognizes B cell; 2) APC contacts antigen; 3) antigen fragment goes to surface of AAPC; 4) TH recognizes antigen digest and MHC; 5) B cell proliferates

APC contacts antigen, antigen fragment goes to surface of APC, TH recognizes antigen digest and MHC, TH cell recognizes B cell,B cell proliferates
2,3,4,1,5

9

A kidney-tranplant patient experienced a cytotoxic rejection of his new kidney. Place the following in order for that rejection:
1)apoptosis occurs; 2)CD8+Tcell becomes CTL; 3) granzymes released; 4)MHC class 1 activates CD8 T cell; 5) perforin released

MHC class I activates CD8+Tcell; CD8+Tcel becomes CTL; perforin released; granzymes released; apoptsis occurs
4,2,5,3,1

10

Patients with Chediak-Higashi syndrome suffer from vaious types of cancer. These patients are most likely lacking?

NK cells

11

what is commensalism?

is when one of the organisms benefit & the other one is unaffected. ie. Corynebacteria inhabit surface of eye & certain saprophytic mycobacteria that inhabit the ear and external genitals. These bacteria live on secretions & sloughed off cells, & they bring no apparent benefit or harm to tlhe host.

12

What is mutalism?

type of symbiosis that benefit both organisms. ie. large intestine w E.Coli that snthesize vit. K & some vit B. Vitamins are needed by host (human) and in exchange the large intestine provides nutrients used by the bacteria.

13

What is parasitism?

one organism benefits by deriving nutrients at the expense of the other. ie. malaria