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Some bacteria(not all) are autotrophic bacteria which means that they can make their own food.These bacteria can be separated into two groupsphotosynthetic bacteriachemosynthetic bacteriaphotosynthetic bacteria contains bacteriochlorophyll which is dispersed in their cytoplasm and so they are able to make their organic food by the process of photosynthesis.e.g green sulphur bacteria,purple sulphur bacteria etcchemosynthetic bacteria oxidize inorganic compounds like ammonia,nitrate,nitrite,sulphur or iron and trap the energy and prepare their food.e.g nitrifying bacteria are chemosynthetic.
There are many natural sources of nitrogen, two of which are mineralization of organic matter and animal waste.
Heterotrophic and autotrophic. Autotrophic subdivided to photoautotrophic and chemoautotrophic.
atp and nadph
Bacteria may also be classified both by the mode by which they obtain their energy. Classified by the source of their energy, bacteria fall into two categories: heterotrophs and autotrophs. Heterotrophs derive energy from breaking down complex organic compounds that they must take in from the environment -- this includes saprobic bacteria found in decaying material, as well as those that rely on fermentation or respiration.
Some bacteria are autotrophs and make their own food. Autotrophic bacteria make food in one of two ways. Some capture and use the sun's energy as plants do. Others, such as bacteria that live deep in mud, do not use the sun's energy. Instead, these bacteria use the energy from chemicals substances in their environment to make their food.
The two types of thermal energy sources are Geothermal and Thermal Energy
there are not just two electrical sources of energy there are lots but two could be solar and biomass
energy
Two sources of light energy include the sun and incandescent light bulbs.
The sun and the earth's interior are the two sources of energy that power earth's systems.
Some bacteria(not all) are autotrophic bacteria which means that they can make their own food.These bacteria can be separated into two groupsphotosynthetic bacteriachemosynthetic bacteriaphotosynthetic bacteria contains bacteriochlorophyll which is dispersed in their cytoplasm and so they are able to make their organic food by the process of photosynthesis.e.g green sulphur bacteria,purple sulphur bacteria etcchemosynthetic bacteria oxidize inorganic compounds like ammonia,nitrate,nitrite,sulphur or iron and trap the energy and prepare their food.e.g nitrifying bacteria are chemosynthetic.
The sun and the earth's interior are the two sources of energy that power earth's systems.
The two main sources of energy gas and electricity.
Matter and energy
There are many natural sources of nitrogen, two of which are mineralization of organic matter and animal waste.
The sun and the earth's interior are the two sources of energy that power earth's systems.