Microbiology Q & A

1.The phospholipids present in cytoplasm membrane of the archaeo-bacteria is

phosphoglycerides polyisoprenoid polyisoprenoid branched chain lipids none of the above

2.The phospholipids present in cytoplasm membrane of eubacteria is mainly

phosphoglycerides polyisoprenoid phospholipoprotein none of these

3.The unifying feature of the archaea that distinguishes them from the bacteria is

habitats which are extreme environments with regard to acidity absence of a nuclear membrane temperature presence of a cell wall containing a characteristic outer membrane cytoplasmic ribosomes that are 70S

4.Mycoplasmas are different from the other prokaryotes by

presence of chitin in cell walls presence of murrain in cell walls presence of proteins in cell walls absence of cell wall itself

5.Which of the following is not true for eukaryotic cells?

Nucleus is bounded by nuclear membrane Chromosomes contain histones Chloroplasts and mitochondria contains 70S ribosomes Gas vacuoles are present