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.
A complex of ribosomes attached to a single strand of RNA is known as
Polymer
Polypeptide
Okazaki's fragment
Okazaki's fragment
D.
Okazaki's fragment
A chain of ribosomes attaches to a single mRNA is called polysome or polyribosomes.
Which one of the following cell organelles is enclosed by a single membrane?
Chloroplasts
Lysosomes
Nuclei
Nuclei
B.
Lysosomes
All others except lysosomes have double membrane.
Water-soluble pigments found in plant cell vacuoles are
chlorophylls
carotenoids
anthocyanins
anthocyanins
C.
anthocyanins
Anthocyanins are water soluble pigments and appear red, purple depending on pH.