This simplified diagram shows the biological and geological carbon cycles, highlighting the processes that transfer carbon between the Earth’s atmosphere, biosphere, hydrosphere, and geosphere.

Carbon is crucial for life, forming molecules like glucose, ATP, amino acids, and DNA. The carbon cycle involves plants taking in carbon dioxide, fixing carbon, and creating organic molecules.

Review your understanding of the carbon cycle with this free article aligned to NGSS and AP standards.

Jun 10, 2016 · Learn how carbon moves through Earth's ecosystems and how human activities are altering the carbon cycle.

As it turns out, the atoms of carbon in your body were once part of carbon dioxide (CO 2 ) molecules in the air. Carbon atoms end up in you, and in other life forms, thanks to the second stage of …

When you take carbon in a gaseous form and you put it into a solid structure, that is called carbon fixation. So through this Calvin Cycle we were able to fix carbon and the energy comes from these …

To see how a glucose molecule is converted into carbon dioxide and how its energy is harvested as ATP and NADH / FADH 2 in one of your body's cells, let’s walk step by step through the four stages of …

If you take the carbon and nitrogen cycles, there you have carbon cycling between inorganic CO2 in the atomosphere and organic carbon-based compounds in organisms.

Overview and steps of the citric acid cycle, also known as the Krebs cycle or tricarboxylic acid (TCA) cycle.

It takes in the carbon dioxide, the products from the light reactions, and then uses that in the Calvin Cycle to produce this very simple building block of other carbohydrates.