Question

All biomolecules have the following elements

Oxygen : true or false
Carbon. : true or false
Nitrogen : true or false
Hydrogen : true or false


There are three elements that make up most biomolecules but proteins always have another element which of the following is found in proteins?

Oxygen
Nitrogen
Carbon
Hydrogen

Answer 1

The statement regarding the elements present in all biomolecules is not entirely accurate. While the majority of biomolecules contain carbon, hydrogen, and oxygen, not all biomolecules contain nitrogen. Hence:

- Oxygen: **True**
- Carbon: **True**
- Nitrogen: **False** (not all biomolecules contain nitrogen)
- Hydrogen: **True**

Regarding proteins, they are primarily composed of carbon, hydrogen, oxygen, and nitrogen, and they often contain sulfur as well. Therefore, proteins always have nitrogen, in addition to other elements.

So the answer to your question about which element is found in proteins is:

- Nitrogen (this is the element present in proteins).