Which one is not right about plasmid?
A. It is extra-chromosomal genetic material；
B. It is closed circular double stranded DNA chain；
C. Its loss will result in death of bacterial cells.
D. It carries genetic information for drug-resistance;
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Which one is right about bacterial nucleoid?
A. It is an area for bacterial chromosome DNA,
B. It is surrounded by the nuclear membrane;
C. It is a specific area of harbouring plasmid;,
D. It is limited by mesosome;
Which statement is not true about mesosome of bacterium?
A. It is equivalent to a mitochondria for synthesis of energy in bacteria;
B. It work as a spindle that mediates cell division ;
C. It increases membrane area,
D. It functions as receptors.
Mesosome is found in which one of following structures?
A. cell wall
B. cell membrane
C. chromosome
D. capsule
Which statement is right about ribosome of bacteria?
A polyribosome is formed when translation of protein take place in the cells of bacteria.
B. Only one peptide chain is translated from a mRNA chain in the ribosome of bacteria.
C. The ribosome in bacteria is a site for synthesis of protein and ATP
D. The ribosome can be broken by penicillin, leading to death of bacteria.
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