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

Main causative organism of chiken pox is

a. Fox virus b. Mumps virus c. Measles virus d. None of these

All of the following are energy source of
bacteria except
a. Oxidation of inorganic compounds b. Oxidation of organic compounds c. Absorption of heat d. Utilisation of visible

The bases Adenine and Thymine are
paired with
a. Double hydrogen bonds b. Single hydrogen bonds c. Triple hydrogen bonds d. Both b and c

The no. of hydrogen bonds existing
between Guanine and Cytosine are
a. 5 b. 2 c. 3 d. None of these

The length of each coil in DNA strand is

a. 15 Ao b. 34 Ao c. 30 Ao d. 5 Ao

Which is the best choice of automatic analysers? ( #Lab #superintendent #railways #exam 2019 )

Cells involved in type I hypersensitive reaction ( RRB lab assistant 2019)

The animals which lay eggs are called ______ animals.

( Lab superintendent railway exam 2019)

Antibodies are

Pellicle is found in only