72. Carcinogenesis (biological agents)

Question 1

Microbial carcinogenes

Answer 1

Fungi (mycotoxins)
Plants
Oncogenic viruses

Question 2

Due to host protooncogenic activity, uncontrolled oncoprotein production is induced in the virus (cell proliferation) example of virus

Answer 2

retroviruses

Question 3

Viral oncogenes example

Answer 3

papillomaviruses

Question 4

Without own viral oncogenes, the viruses can insert into host genome, and activate oncoprotein production
example?

Answer 4

avian leukosis virus

Question 5

RNA-viruses as carcinogenes example

Answer 5

retroviruses

Question 6

RNA-viruses 2 groups:

Answer 6

Contains oncogenes (v-onc) or transformation genes
Lack of v-onc

Question 7

direct Oncogenic DNA-viruses

Answer 7

primarily actives c-onc

Question 8

indirect Oncogenic DNA-viruses

Answer 8

cease the cell’s apoptotic potential, inactivate
tumorsuppressor genes

Question 9

Spiprocerca lupi can be the cause of…

Answer 9

Parasite induced carcinogenesis