Of the following, which is not a bacterial action?
Sewage disposal
Nitrogen fixation
Emulsification of fat
None of these
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- Which of the following statements about bacteria is not true ?
- True nucleus is absent in
- Citrus canker is a common disease of lemon and oranges. It is caused by
- Bacteria which directly converts atmospheric nitrogen into nitrogen compounds are called
- Escherichia coli is a bacterium which is a common inhabitant of
- Food poisoning is generally caused by
- Sexual reproduction in E. coli is known as
- Endospore formation takes place in which of the following bacteria ?
- Bacteria reproduce
- Which of the following statement is correct ?
- Chlorophyll 'a' occurs in
- Which of the following occurs in photo-synthetic bacteria only ?
- Denitrifying bacteria convert
- Bacterial activity is minimum at
- Bacteria reproduce asexually by means of
- A free living bacterium capable of fixing atmospheric nitrogen is
- Which of the following is a best source of bacteria ?
- Bacteria are usually classified as plants because they
- Tetanus is caused by
- The pigment similar to chlorophyll found in green sulphur bacteria is
- The Streptococcus lactis is responsible for
- Bacteria having a tuft of flagelia at one end are called
- Bacteria lacks:
- Which one of the following fixes CO2 into carbohydrates ?
- Putrefying bacteria act upon
- There is no alternation of generation in £. coli due to absence of
- The nuclear material in a bacteria is made up of
- Which of the following bacteria can oxidise hydrogen sulphide to sulphur?
- The smallest bacteria are
- Bacteria was first discovered by