carbon and oxygen and hydrogen are considered to be the base of organic chemistry due to small size of hydrogen ang single bond forming capacity also carbon is tetravalent and can show catenation easily which is why its root of all organic chemistry
I believe the answer you are looking for is carbon. While it is not a molecule, Carbon is the focus of organic chemistry and is a major component of living things. The most important molecules in Biology are considered to be proteins, carbohydrates, nucleic acids, lipids and water, but they cannot be considered the focus of organic chemistry.
The major branches of chemistry include organic chemistry (study of carbon-containing compounds), inorganic chemistry (study of non-carbon compounds), physical chemistry (study of the physical properties of matter), analytical chemistry (analysis of matter composition), and biochemistry (study of chemical processes in living organisms).
there are five branches: inorganic, organic, analytical, physical, and biochemistry. they could be further broken down into sub-branches such as organometallic chemistry, physical organic chemistry, electroanalytical chemistry, and so on and so forth.
Carbon!
Organic, inorganic, analytical, physical, and your guess is as good as mine. Biochemistry? Polymer chemistry? Surface chemistry? Theoretical chemistry? Nuclear chemistry? Depending on your bias any of those might be regarded as a subdivision of one of the Big Four or as a largely independent field of study. According to my textbook (Grade 11 Chem) they are Organic, Inorganic, Analytical, Physical and Biochemistry.
Analytical Chemistry Biochemistry Inorganic Chemistry Organic Chemistry Physical Chemistry
organic
The major product formed in organic chemistry reactions is a new compound resulting from the rearrangement or combination of the starting materials.
One of the 5 major divisions of chemistry is organic chemistry. The other four include inorganic chemistry, physical chemistry, analytical chemistry, and biochemistry.
Major areas of chemistry are organic chemistry, inorganic chemistry, biochemistry, radiochemistry, geochemistry, clinical chemistry, analytical chemistry, photochemistry, hydrochemistry, etc.
Carbon is the major component of organic compounds, such as carbohydrates, proteins, fats, and nucleic acids. It is also a key component of many minerals, such as diamonds and graphite.
physics biology and chemistry