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