(mÄth'Än') A colorless, odorless, flammable gas that is the simplest hydrocarbon. It is the major constituent of natural gas and is released during the decomposition of plant or other organic compounds, as in marshes and coal mines. Methane is the first member of the alkane series.
Photosynthesis is the process by which organisms that contain the pigment chlorophyll convert light energy into chemical energy which can be stored in the molecular bonds of organic molecules (e.g., sugars). Photosynthesis powers almost all trophic chains and food webs on the Earth.
Photosynthesis uses two types of chlorophyll, chlorophyll a and b, to produce energy. Chlorophyll A. Chlorophyll a absorbs energy from wavelengths of blue-violet and orange-red light at 675 nm. It reflects green light which gives chlorophyll its green appearance.It is very important in the energy phase of photosynthesis because chlorophyll a molecules are needed before photosynthesis can proceed.hotosynthesis uses two types of chlorophyll, chlorophyll a and b, to produce energy. Chlorophyll A. Chlorophyll a absorbs energy from wavelengths of blue-violet and orange-red light at 675 nm. It reflects green light which gives chlorophyll its green appearance.