Antigenic variation is most extensive in

a. Influenza virus b. Small pox virus c. Measles virus d. Herpes virus

Which of the following are inactive viral
vaccines?
a. Influenzae b. Rabies c. Russian spring summer encephalitis d. All of these

The gene transfer occurs by –

a. Transformation b. Transduction c. Conjugation d. Cell fusion

Bacteria are more sensitive to antibiotics
at which phase of growth curve?
a. Decline phase b. Stationary phase c. Lag phase d. Log phase

Tubercular bacilli grow best in

a. Absence of O2 b. Presence of CO2 c. Presence of O2 d. None of these

Prozone phenomenon” is encountered
in

All of the following are energy source of
bacteria except

Daisy head colony is associated with

The dengue fever virus is –

a. Arbo virus b. Echo virus c. Entero virus d. Orthomyxo virus

Identify the obligate anaerobes

a. Salmonella b. Vibrio cholera c. Cl. tetani d. Sarcinae

Cholera red reaction is identified by

a. Sulphuric acid b. Nitric acid c. Hydrochloric acid d. Carbolic acid

The parts which filter lymph are

a. Lymph nodes b. Spleen c. Thymus d. Bone marrow

Prausnitz kustner reaction is generated by

a. IgA b. IgE c. IgG d. IgD

AIDS patients suffer from pneumoniae
due to
a. Pneumocystisis carinii b. Cryptospodidium c. S.pneumoniae d. Toxoplasma

Toxins or enzymes which are not
produced by streptococcus pyrogens
a. Hyaluronides b. Phosphate c. Hemolysin d. Streptokinase