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The Sun. (or solar energy, whichever you prefer)
The big yellow thing in the sky! :) Think of plants for instance-- PHOTOSYNTHESIS!
The source of energy necessary for ANY life to exist on Earth is the sun. The sun provides light energy. Light energy is necessary to carry out photosynthesis. Going more into detail:
Without light energy, the electrons in the chlorophyll molecules of plants would not be able to get "excited" and break apart from the chlorophyll molecules. If this doesn't happen, there will be no electrons to pull the Hydrogen ion that came from water into the hydrogen ion reservoir (this is active transport and thus requires energy). If the hydrogen ions do not go into the hydrogen ion reservoir, there will be no concentration gradient that allows ATPase (the enzyme that deals with ATP/ADP) to harvest the energy from the constant flow of Hydrogen ions out of the hydrogen ion reservoir (this flow makes energy since the ions have a charge). ATPase uses this harvested energy to add an inorganic phosphate to an ADP molecule, storing this energy in the bonds of ATP. This ATP is needed to conduct the Dark Phase, or Calvin cycle, which is the second part of photosynthesis.
Basically, if the sun did not exist, photosynthesis could not be conducted. Heterotrophs (animals and humans) need Photosynthesis to occur since it gives off Oxygen gas as a waste product (just as animals conducting cellular respiration give off Carbon Dioxide as a waste product, which plants need). It is a never ending cycle.
So there you go: your answer is THE SUN and the light energy that it gives.
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∙ 13y ago
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The source of energy for most autotrophs is A water or B the sun or C heterotrophs or D other autotrophs?
the sun because well it gives them energy
Autotrophs that utilize light as their energy source are?
Photoautotrophs use light as the energy source for producing proteins, lipids and other organic substances. Examples of photoautotrophs are plants.
What is the source of the energy in an energy pyramid?
The sun. Which is absorbed by autotrophs and They are in turn eaten by heterotrophs
What is the source of all energy in an energy pyramid?
The sun. Which is absorbed by autotrophs and They are in turn eaten by heterotrophs
What is the ultimate source of energy autotrophs use to produce their own food?
It depends. Most of the autotrophs you have seen are green plants and they ultimately get their energy from the sun through photosynthesis. In the oceans, around volcanic vents, entire ecosystems get their energy from organisms that absorb the dissolved chemicals for energy. These are chemoautotrophs or 'chemotrophs' for short.
Are sunflowers autotrophs?
Autotrophs simply 'self feed'. Sunflowers are photo-autotrophs. Like all plants, they need the sun as an energy source, to grow and process their food (starches etc).
What is the source of most autotrophs?
you should know why u looking for it
Where do most of the autotrophs get their energy from?
Inorganic matter (apex)
What location would most likely hold autotrophs that derive their energy from chemical compuonds?
What location would most likely hold autotrophs that get their energy from chemical compounds
What type of organism supplies almost all of the energy in the biosphere?
Autotrophs, organisms that can manufacture their own food using inorganic chemicals and an outside source of energy, most commonly sunlight.
How heterotrophs depend on the sun sun for energy?
Heterotrophs depend on the sun for energy because they eat other hetertophs and autotrophs. As you know autotrophs eat plants sp when a heterotroph eats one, it gets the energy. Or it receives it directly by eating the plants/autotrphs. I hope this answered your question. -Skylar =P OR~ The ultimate source is where the energy came from originally. Heterotrophs get their energy from autotrophs, which get their energy from the sun. So, that means the original (or ultimate) source of energy is the sun.
How is an autotroph different from a chemotroph?
An autotroph uses co2 as primary carbon source where as chemotroph uses chemicals as primary energy source. Chemotrophs also require a source of organic nutrient, and autotrophs would be considered a photosynthesizer.
