Organic compound, any of a large class of chemical compounds in which one or more atoms of carbon are covalently linked to atoms of other elements, most commonly hydrogen, oxygen, or nitrogen. The few carbon-containing compounds not classified as organic include carbides, carbonates, and cyanides.

So, the correct answer is ‘Ketoglutaric acid’.

This process is called carbon fixation, because CO2 is “fixed” from its inorganic form into organic molecules. Because the carbohydrate molecule has six carbon atoms, it takes six turns of the Calvin cycle to make one carbohydrate molecule (one for each carbon dioxide molecule fixed).

Compounds of carbon are classified as organic when carbon is bound to hydrogen. Carbon compounds such as carbides (e.g., silicon carbide [SiC2]), some carbonates (e.g., calcium carbonate [CaCO3]), some cyanides (e.g., sodium cyanide [NaCN]), graphite, carbon dioxide, and carbon monoxide are classified as inorganic.

Petroleum

Those organic compounds which have only single bonds between carbon atoms are known as alkanes. They have a maximum number of hydrogen atoms bonded with carbon atoms….Difference Between Organic and Inorganic Compounds (Table)

The four major classes of organic compounds found in the body are Carbohydrates, Lipids (fats), Proteins and Nucleic acid. Carbohydrates – Carbohydrates are the most common type of organic compound. Carbohydrates are one of the essential food ingredients, which we all require.

Organic foods are crops that were produced without using synthetic pesticides, fertilizers or other genetically modified components. They also include animals products such as cheese, milk, meat or honey that were also produced free of growth hormones, antibiotics.

Products That Contain Organic Compounds

• Asphalt (petroleum hydrocarbons)
• Candles (wax, tallow)
• Coal (mixed hydrocarbons)
• Detergent (alkylbenzene sulfonates)
• Drugs (e.g., acetaminophen, caffeine, penicillin)
• Dyes (compounds from plants or petrochemicals)
• Enzymes (papain, catalase, amylase)

The term “organic” refers to the way agricultural products are grown and processed. While the regulations vary from country to country, in the U.S., organic crops must be grown must be grown without the use of synthetic herbicides, pesticides, and fertilizers, or bioengineered genes (GMOs).

Produce can be called organic if it’s certified to have grown on soil that had no prohibited substances applied for three years prior to harvest. When packaged products indicate they are “made with organic [specific ingredient or food group],” this means they contain at least 70% organically produced ingredients.