Because those are 4 of the most abundant (or most reccuring) gases in Earth's atmosphere.
All proteins contain carbon, hydrogen, oxygen and nitrogen. Most of them also contain sulfur, which is found in the standard amino acid residues cysteine and methionine (any given protein might not contain either of these, though it would be unusual).
The most abundant elements in the universe, in order from most to least abundant, are Hydrogen, Helium, Oxygen, Carbon, and Nitrogen. Therefore, the correct list would start with Hydrogen, followed by Helium (not listed), then Oxygen, Carbon, and finally Nitrogen. The first option you provided, "Hydrogen Oxygen Nitrogen Carbon," is almost correct but is missing Helium and has an incorrect order for Nitrogen and Carbon.
No. Sugars are composed of carbon, hydrogen, and oxygen, but not nitrogen.
carbon, oxygen, hydrogen and nitrogen - have in common
Carbon, Hydrogen, Nitrogen, Oxygen
The human body is made up of only mostly carbon, oxygen, hydrogen, nitrogen, calcium, and phosphorus. The top four elements are oxygen, carbon, hydrogen and nitrogen, so that would be a. on your list.
Coal is a type of rock that is comprised of mostly carbon, as well as small amounts of sulfur, hydrogen, oxygen, nitrogen, and ash.
Carbohydrates are composed of carbon, hydrogen, and oxygen. Lipids are composed of carbon, hydrogen, and oxygen as well, but they have a higher ratio of carbon and hydrogen compared to oxygen. Proteins are composed of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur.
Carbon, hydrogen, and oxygen
There is not much hydrogen in the air at all. The air mostly consists of oxygen, nitrogen, and carbon.
No, your body is mostly the nonmetals hydrogen, oxygen, carbon, and nitrogen.
All proteins contain carbon, hydrogen, oxygen and nitrogen. Most of them also contain sulfur, which is found in the standard amino acid residues cysteine and methionine (any given protein might not contain either of these, though it would be unusual).
The most abundant elements in the universe, in order from most to least abundant, are Hydrogen, Helium, Oxygen, Carbon, and Nitrogen. Therefore, the correct list would start with Hydrogen, followed by Helium (not listed), then Oxygen, Carbon, and finally Nitrogen. The first option you provided, "Hydrogen Oxygen Nitrogen Carbon," is almost correct but is missing Helium and has an incorrect order for Nitrogen and Carbon.
The four elements that make up 96 percent of living organisms are carbon, hydrogen, oxygen, and nitrogen. These elements are essential for building biological molecules such as proteins, DNA, and carbohydrates that form the fundamental structure of living organisms.
Carbon, Hydrogen, Nitrogen, Oxygen
No. Sugars are composed of carbon, hydrogen, and oxygen, but not nitrogen.
Lipids typically consist of carbon, hydrogen, and oxygen atoms. Some lipids may also contain elements like nitrogen, phosphorus, or sulfur in smaller quantities depending on their specific structure and function.