2121. The oldest accurately dated life form is a micro organisms :

A. Xanthomonads Composters
B. Agrobacterium tumefaciens
C. EU bacterium isolate *
D. Phytophthora infesters

2122. The building block of complex multicellular organisms are :

A. Cells *
B. Tissues
C. Organs
D. Organelles

2123. The ability to distinguish between two closely placed objects is called :

A. Electrophoresis
B. Magnification
C. Resolution *
D. Chromatography

2124. The resolving power of light compound microscope is :

A. 230 nm
B. 250 nm *
C. 240 nm
D. 400 nm

2125. The resolution power of human eye is :

A. 1mm *
B. 2mm
C. 3mm
D. 4mm

2126. Which one of the following is used for anatomical study ?

A. Transmission electron microscope *
B. Scanning electron microscope
C. Bot A and B
D. None

2127. Transmission electron microscope can magnify an object up to :

A. 1,000,00 X
B. 1,000,000 X *
C. 1,000,0000 X
D. 1,000,00000 X

2128. Leishman’s stain is used for :

A. Fungal hyphae and spores
B. Cellulose
C. Cytoplasm
D. Blood Cells *

2129. Which one of the following is a temporary stain ?

A. Aniline Blue
B. Borax Carmine
C. Eosine
D. None of the above *

2130. The important apparatus used in cell fractionization are :

A. Homogenizer
B. Centrifuge
C. Inverted Microscope
D. Bot A and B