Question

Which bacteria oxidise various inorganic substances and use the released energy for their ATP production and they play a great role in recycling of nutrients like nitrogen, phosphorus, iron and sulphur ?

• A. Archaebacteria
• B. Photosynthetic autotroph bacteria
• C. Chemosynthetic autotroph bacteria
• D. Heterotrophic bacteria

Answer 1

The correct option is C Chemosynthetic autotroph bacteria

Chemosynthetic autotroph bacteria oxidise various inorganic substances and use the released energy for their ATP production. Chemosynthetic bacteria, unlike plants, obtain their energy from the oxidation of inorganic molecules, rather than photosynthesis. Chemosynthetic bacteria use inorganic molecules, such as ammonia, molecular hydrogen, sulfur, hydrogen sulfide and ferrous iron, to produce the organic compounds needed for their subsistence. Thiobacillus, Nitrobacter, and Nitrosomonas are examples of chemosynthetic bacteria.

So, the correct option is 'Chemosynthetic autotroph bacteria'.