51.

52.

53.

54.

55.

56.

57.

58.

59.

Rocky mountain spotted fever is caused by
A) Rickettsia rickettsii
C) Rickettsia typhi

Bacterial conjugation was described by
A) Zinder and Lidenberg
C) Tatum and Zinder

Which of these are basic dyes ?
A) Methylene blue, Crystal violet
C) Crystal violet, Rose bengal

Mesosomes are present in
A) Only gram negative

B) Only gram positive

0)

D) None of the above

Bacterial membrane contains sterol like mo!
A) Penta cyclic sterols
C) Heptacyclic sterols

081/22

B) Rickettsia prowazekii
D) Rickettsia akari

B) Lederberg and Tatum
D) Beadle and Tatum

B) Methylene blue, Rose bengal
D) Methylene blue, Eosin

Both gram positive and negative bacteria

ecules called hapnoids. Hapnoids are
B) Tetra cyclic sterols
D) None of these

Final blow to spontaneous generation was given by

A) Louis Pasteur
C) John Tyndall

Fixative osmium tetroxide is used to stabilize

A) Protein
C) Cell structure

Diameter of metal grid for specimen mount
A) 3.05 mm
C) 3.05 um

B) Robert Koch
D) John Needham

B) Nuclear material
D) Dehydration of cell

used in Electron Microscope is
B) 3.50 mm
D) 3.50 um

Medium containing serum or egg are sterilized by

A) Hot air oven
C) Inspissator

B) Autoclave

D) Incinerator