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
B.
I is true but II is false
Mitochondria and chloroplast have DNA and are capable of self-replication, thus they are semi-autonomous bodies
The organelles do synthesize some of protein and hence they have the protein synthesizing machinery. However, most of the proteins are derived from the nucleus.
In a chloroplast the highest number of protons are found in
lumen of thylakoids
inter membrane space
antennae complex
antennae complex
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
One of the major components of cell wall of most fungi is
peptidoglycan
cellulose
hemicellulose
hemicellulose
A complex of ribosomes attached to a single strand of RNA is known as
Polymer
Polypeptide
Okazaki's fragment
Okazaki's fragment
Water-soluble pigments found in plant cell vacuoles are
chlorophylls
carotenoids
anthocyanins
anthocyanins
Which one of the following cell organelles is enclosed by a single membrane?
Chloroplasts
Lysosomes
Nuclei
Nuclei
Pigment-containing memberanous extensions in cyanobacteria are
heterocysts
basal bodies
pneumatophores
pneumatophores
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
