Simple molecules:
* Amino acids: The building blocks of proteins.
* Carbohydrates: Sugars like glucose and fructose, as well as starches.
* Nucleic acids: DNA and RNA, which store genetic information.
* Water: While not technically containing nitrogen, it is essential for all living things.
More complex molecules:
* Proteins: These are made up of long chains of amino acids.
* Lipids (fats and oils): While primarily made of carbon, hydrogen, and oxygen, some lipids contain nitrogen (like phospholipids).
* Vitamins: Some vitamins, like Vitamin B12, contain nitrogen.
* Hormones: Many hormones, like insulin, contain nitrogen.
Other:
* Plant and animal tissues: All living organisms contain these elements in various combinations.
* Soil: Soil contains organic matter which is broken down from dead organisms.
* Fossil fuels: These contain carbon, hydrogen, and sometimes nitrogen, but not necessarily oxygen.
Do you have something specific in mind? If you tell me what you're interested in, I can give you a more precise answer.
