There is no such molecule that is the basis of all structures. What I think you may mean is what atoms are the basis of organic molecules. In order for a compound to be considered organic, you have to have Carbon - Hydrogen bond/s. Organic molecules make up a considerable percentage of all living things.
Some could argue that Deoxyribose nucleic acid may be.
Carbon is the element in the periodic table that serves as the basis for all organic molecules. It has unique bonding properties that enable it to form stable and diverse structures, making it essential for life as we know it.
Carbon
Every organic molecule contains carbon atoms.
They contain carbon, and usually hydrogen. For example, CO2 is not organic, but CH4 is organic.
carbohydrates can be known as organic molecules as they have carbon as a central element
It is a complex carbon molecule, as are all organics.
Ammonia is not organic. Others are organic molecules
An organic molecule will always contain carbon and hydrogen depending on the molecule it might also contain hydroxide, oxygen nitrogen, chlorine, and other chemicals depending on the organic compound for example sugar is C6 H12 O6. More complex organic compounds will have more Carbon and hydrogen and other chemicals.
energy
This element is carbon (C).
Organic compounds contain carbon atoms bonded to other elements such as hydrogen, oxygen, nitrogen, etc. They are also typically associated with living organisms, as they form the basis of biological processes and structures.
Yes, all organic molecules contain carbon.