In which one of the following is nitrogen not a constituet?
Pepsin
Idioblast
Bacteriochlorophyll
Invertase
How many mitotic divisions are needed for a single cell to make 128 cells?
7
14
28
64
An outer covering membrane is absent over ____________.
nucleolus
lysosome
mitochondria
plastids
Resolution power is the ability to ____________.
distinguish two trees
distinguish two close objects
distinguish amongst organelles
impermeability
The point at which polytene chromosomes appear to be attached together is called ________________.
centriole
centromere
chromomere
chromocentre
Organelle having flattened membrane bound cisternae and lying near the nucleus is _______________.
plasmid
Golgi apparatus
lomasome
The function of rough endoplasmic reticulum is ______________.
fat synthesis
lipid synthesis
protein synthesis
steroid synthesis
The eukaryotic genome differs from the prokaryotic genome because ____________.
DNA is complexed with histones in prokaryotes
repetitive sequences are present in eukaryotes
genes in the former cases are organised into operons
DNA is circular and single stranded in prokaryotes
Fluid mosaic model of cell membrane was put forward by ____________.
Danielli and Davson
singer and Nicolson
Garner and Allard
Watson and Crick
Experiments on Acetabularia by Hammerling proved the role of ____________.
cytoplasm in controlling differentiation
nucleus in heredity
chromosomes in heredity
nucleo cytoplasmic ratio