algae; photosynthesis; Calvin cycle; phytoplankton
BBC - Future - Will we ever… photosynthesise like plants?
Apart from the food they manufacture, plants also need carbon, hydrogen and oxygen to survive. Water absorbed from the soil provides the hydrogen and oxygen. During photosynthesis, carbon and water are used to synthesize food. They also need nitrate to make amino acids (Amino acid an ingredient for making protein). In addition to that, they need magnesium to make chlorophyll.
In this lesson, we shall learn more about how plants manufacture food (photosynthesis), and learn more about the conditions that must be present for this to happen.
Will we ever… photosynthesise like plants
The fact of the matter is, plants areincredibly special because only plants can dophotosynthesis. For this reason, every organism onearth ultimately relies on plants for its survival(with a few exceptions, which I'll discuss later).Even animals that eat only meat, hunting andcatching their food as prey, ultimately rely onplants for survival because the prey are eatingplants, or are eating insects that are eatingplants, or are eating animals that are eatinganimals that are eating plants, etc.
Carnivorous plants can photosynthesise, so why eat …
Only plants can do photosynthesis.Photosynthesis is the process of harnessingenergy from sunlight to generate chemical energy,which can be stored and used later. Thisstored chemical energy comes from the conversionof inorganic carbon (carbon dioxide) into organiccarbon, or food. Every living thing needs a sourceof stored energy for survival, even plants! Thinkof the stored energy as a battery, which isproviding energy not just for muscle movement(which plants obviously don't worry about), butfor all of the essential processes of life (cellgrowth and repair, for example). Living thingsthat can not harness and store energy themselvesthrough photosynthesis (and this includes humans,animals, insects, bacteria, viruses) HAVE to usethe energy harnessed and stored by plants tosurvive, or their battery runs out. Only plantshave the ability to recharge the batteries, soliving organisms are dependent on plants. Theprocess that releases the energy stored in thesebatteries is called the Krebs cycle.
Will humans ever photosynthesise? - …
You can thing of the Krebs cycle as theopposite of photosynthesis: a process whichreleases energy by converting organic matter backinto carbon dioxide.I like to think of life as a giant cycle ofcarbon. The carbon begins and ends the cycle inthe form of carbon dioxide but goes through manydifferent forms and transformations along the way:photosynthesis converts the carbon dioxide intoplant matter, which is passed along the food chainas organic carbon and eventually the Krebs cycleconverts this organic carbon (which is now grassor cow or tiger or grasshopper) back into carbondioxide and the whole thing begins again.