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

A biochemical indication of vitamin B12
deficiency can be obtained by measuring
the urinary excretion of

Increased carbohydrate consumption
increases the dietary requirement for

Kauffmann white scheme is used to detect

a. Salmonella spp. b. Shigella spp. c. E.coli d. None of these

For ster i l izat ion of fermentation ion
equipment the method followed is
a. Radiation b. Chemicals c. Heating d. All of these

Electron microscope studies does not help
in identifying the section of bacterial
spore a. Core b. Spore cortex c. Capsule d. All of these

The fo l low ing are used for the
preservation of virus, except

DPT is

The daily requirement of calcium is

What is the state of iron in transferrin?

What is the principal cation of intracellular
fluid?