Infectious disease

Question 1

describes the mixing of genomic segments

Answer 1

reassortment

Question 2

This is the uptake of forigen/naked DNA, but progeny are not changed

Answer 2

Transformation

Question 3

This is when a host cell is coinfected, virus “stuff” changes, but no genomic change

Answer 3

Phenotypic mmixing

progeny virus will be unchanged

Question 4

Why is there liver damage in Hep B

Answer 4

The virus does nothing (perse)

HBsAG and HBcAg on cell surface of hepatocytes stimulates Cd8 T cell, and they damage the liver

Question 5

What type of heart failure is more likely to be seen with infections

Answer 5

A dilated cardiomyopathy

Question 6

Name some normal anarobic bacteria found in the oral caviety

Answer 6

Peptostreptococcus
Prevotella
Bacteroids
Fusobacterium

Question 7

How does Hep B look on liver biopsy

Answer 7

Ground glass appearance

Cell is filled with hep b surface antigen

Question 8

How does Hep C look on liver biopsy

Answer 8

Lymphoid agregates in the portal tracts

Focal areas of macrovesicular steatosis