Glucose, or in general, carbohydrates.
Cellular respiration is the process that supplies energy for the cell cycle to take place in all living things. This process involves the conversion of glucose into ATP, the cell's main energy source.
The Sun
Nutrients. There could be a single thing that a living organism survives on that is not a nutrient but I can't think of one right now. The sun is a type of nutrient because it provides some types of nutrients. Anything can be a nutrient so I'd say the only thing the most "primitive" living organisms need is some form of nutrient. Not all living things need oxygen or hydrogen.
Carbohydrates and lipids are the two main groups of carbon compounds that serve as chemical energy supplies for living things. Carbohydrates are primary sources of quick energy, while lipids are utilized for long-term energy storage in organisms.
Carbohydrates provide quick energy to living things. They are broken down into glucose, which is readily used by cells for immediate energy needs. Simple carbohydrates, like sugars, are especially effective for rapid energy release, while complex carbohydrates provide sustained energy over a longer period.
Adenosine triphosphate (ATP) is the compound found in living things that supplies energy to cells. When one of its chemical bonds is broken, it releases energy that can be used for cellular processes.
ATP
Cellular respiration is the process that supplies energy for the cell cycle to take place in all living things. This process involves the conversion of glucose into ATP, the cell's main energy source.
The Sun
The Sun
Photosynthesis!
Greener way of living involves saving your energy and water, using less gas and making your own cleaning supplies.
Creatine is a result of the metabolism of protein. It is present in living tissue. It supplies the energy for muscle contraction.
Adenosine triphosphate (ATP) is the compound found in living things that supplies energy in one of its chemical bonds directly to cells. This high-energy molecule is often referred to as the "energy currency" of the cell because it helps in various cellular processes by releasing energy stored in its phosphate bonds.
Sunlight and, at the Ocean bottom at heat vents, hydrogen sulfide are both use as sources on bio-energy.
Almost all the energy used by living things comes from the Sun, through the process of photosynthesis. Plants capture sunlight and convert it into chemical energy in the form of glucose, which is then consumed by other organisms, transferring the energy up the food chain.
Nutrients. There could be a single thing that a living organism survives on that is not a nutrient but I can't think of one right now. The sun is a type of nutrient because it provides some types of nutrients. Anything can be a nutrient so I'd say the only thing the most "primitive" living organisms need is some form of nutrient. Not all living things need oxygen or hydrogen.