True about bacteria -

Ans. is 'a' i.e., Mitochondria always absent; 'c' Divide by binary fission . Bacteria are prokaryotes and do not have mitochondria, nuclear membrane, nucleolus, lysosomes, golgi apparatus, and endoplasmic reticulum. . Sterols are absent in cell wall, except for mycoplasma. . Bacteria divide by binary fission . They can be seen under light microscope, phase contrast microscope, Dark field/ Dark ground microscope and electron microscope.