Finally microbiology 2023 with Islam
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94 .serologic test results from a hepatitis patient reveal: anti-HBc positive, HBsAg positive, and anti
HBS negative. The correct interpretation of the patient's status is A Impossible to have both surface antigen and core antibod positive.
B. No longer contagious
C. Immune to hepatitis B virus
D. Evidence of receiving hepatitis B vaccination
E. Hepatitis B virus infection
93.Person with HIV-1 infection which following is most predictive of the pt prognosis?
A. Rate of decline in anti HIV antibody
B. CD4 + cell count
C. CD4 + CD8 cell ration
D. Degree of lymphadenopathy
E. Level HIV RNA in plasma
92.Which of the following is correct for antigenic drift in influenza viruses?
A. It affects predominantly the matrix protein
B. It results in major antigenic changes
C. It is exhibited only by influenza A viruses
D. It is due to frameshift mutations in viral genes
E. It results in new subtypes over time
91.which of the following is correct for Rhinoviruses:
A. They share physicochemical similarities with Coronaviruses
B. There are three antigenic types
C. Amantadine protects against infection
D. They do not survive on environmental surfaces
E.They are the most frequent causative agent of the common cold
90.ETEC produces two major type toxin hear labile LT and heat stable LT or cholerae toxin activities CAMP whereasST activities or act as ............ that causes travelers diarrhea .
A. Act as choleragen
B. Ribosomes dysfunction
C. Decarboxylase reaction
D Guanylate cyclase
E. Fermentation of suger
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