Chemical constituent of cystolith in plants is
calcium carbonate
calcium oxalate
calcium nitrate
calcium phosphate
What is common between chloroplasts, chromoplasts and leucoplasts ?
presence of pigments
possession of thylakoids and grana
storage of starch, proteins and lipids
ability to multiply by a fission -like process
Nucleic acid occurs in _____________ .
Golgi body
Iysosomes
cytoplasm
mitochondria and chloroplast
Subunits in prokaryotic ribosomes are
60S -40S
50S-30S
40S-30S
50S-20S
Main component of ribosome are
DNA and RNA
RNA and protein
DNA and protein
protein and lipids
A student wishes to study the cell structure under a light microscope having 10X eyepiece and 45 X objective .He should iluminate the object by which one of the following colours of light so,as to get the best possible resolution ?
Yellow
Green
Blue
Red
.Autonomic genome systems is present in
ribosomes and golgi bodies
golgi bodies and mitochondria
mitochondria and chloroplasts
chloroplasts and ribosomes
The plasma membrane consists mainly of
phospholipids embedded in a protein bilayer
proteins embedded in a phospholipid bilayer
proteins embedded in a polymer of glucose molecules
proteins embedded in a carbohydrate bilayer
The dominant epistasis ratio is
9 : 3 : 3 : 1
12 : 3 : 1
9 : 3 :4
9 : 6 : 1
Resolving power of electron microscope is