Pigment-containing memberanous extensions in cyanobacteria are
heterocysts
basal bodies
pneumatophores
pneumatophores
D.
pneumatophores
Cyanobacteria contain chlorophyll but the chlorophyll is not located in chloroplasts, rather it is found in chromatophores, infolding of the plasma membrane, where photosynthesis is carried out.
Heterocysts are specialised nitrogen -fixing cells formed from a centriole and a short cylindrical array of microtubules.
Pneumatophores are lateral roots that grow upward for varying distance and function as the site of oxygen intake for the submerged primary roots.
In a chloroplast the highest number of protons are found in
lumen of thylakoids
inter membrane space
antennae complex
antennae complex
A complex of ribosomes attached to a single strand of RNA is known as
Polymer
Polypeptide
Okazaki's fragment
Okazaki's fragment
Which one of the following cell organelles is enclosed by a single membrane?
Chloroplasts
Lysosomes
Nuclei
Nuclei
Water-soluble pigments found in plant cell vacuoles are
chlorophylls
carotenoids
anthocyanins
anthocyanins
Mitochondria and choloroplast are :
I. semi-autonomous organelles.
II. formed by division of pre-existing organelles and they contain DNA but lack protein synthesizing machinery.
II is true but I is false
I is true but II is false
Both I and II are false
Both I and II are false
One of the major components of cell wall of most fungi is
peptidoglycan
cellulose
hemicellulose
hemicellulose
A phosphoglyceride is always made up of
only a saturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached
only an unsaturated fatty acid esterified to glycerol molecule to which a phosphate group is also attached
a saturated or unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached
a saturated or unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached
The Golgi complex plays a major role
in trapping the light and transforming it into chemical energy
in digesting proteins and carbohydrates
as energy transferring organelles
as energy transferring organelles
