Q.31)-The samllest size of a cell that can be seen with naked eye is
- 1 micron
- 10 micron
- 100 micron
- 1000 micron
Q.32)-Which of the following micro-organisms is used in milk-curdiling
- Acetabacter
- Leuconostoc
- Bacillus
- Lactobacillus
Q.33)-Plague' is caused by____________
- Bacteria
- Protozoa
- Virus
- All of the above
Q.34)-An Antigen is
- The result of Antibody
- The opposite of Antibody
- The stimulus of Antibody
- The residue of an Antibody
Q.35)-AIDS virus destroys
- Lymphocytes
- Monocytes
- Neutrophils
- Basophils
Q.36)-Which bacterial strain developed from natural isolates by genetic manipulations can be used for treating oil spills
- Pseudomonas
- Agrobacterium
- Clostridium
- Nitrosomonas
Q.37)-Rinderpest disease of cattle is caused by
- Insects
- Bacteria
- Virus
- protozoa
Q.38)-Bacteriophage was discovered by
- Felix d' Herelle and Frederick Twort
- Kluyver and Niel
- Paul Ehrlich
- Burrill and Smith
Q.39)-Bacterial cells do not have
- Cell wall
- Plasma membrane
- Ribosome
- Mitochondria
Q.40)-Rhizobuim is a kind of
- Photosynthetic bacterias
- Symbiotic bacteria
- Parasitic bacteria
- Saprophytic bacteria