Biology questions
20584 published questions with worked solutions.
- Mesosome in a bacterial cell is
- The wall of bacteria consist of
- Bacterium having flagella with all over body is known as
- Which of the following is a symbiotic nitrogen fixer?
- The kingdom of prokaryotes is
- Which one is the free-living, anaerobic nitrogen fixer?
- Gene regulation in bacteria is shown by
- The cell wall of bacterium is made up of
- Chlorophyll-a absent, in which of the following photosynthetic organisms?
- Which one of the following combinations of microbes is responsible for the formation and flavor of yoghurt?
- A free living nitrogen fixing cyanobacterium which can also form symbiotic association with the water fern *Azolla* is
- Which of the following is a nitrogen fixing organism?
- Which of the following is the site of respiration in bacteria?
- Which is not related with N₂-fixation?
- The common nitrogen-fixer in paddy fields is
- Which type of DNA is found in bacteria?
- Which one of the following does not belong to kingdom-Monera?
- Highest number of antibiotics are produced by
- Bacterial flagella do not show ATPase activity and 9+2 organization. These are chemically formed of
- In the light of recent classification of living organisms into three domains of life, bacteria, archaea and eukarya, which of the...