1. Cholesterol

2. Nitrogen elements
3. Amylase
4.nitrogen
5.amino acids

1. Cholesterol:

Cholesterol is a type of fat molecule found in the body that is vital for various functions, such as building cell membranes, producing hormones, and aiding in digestion. To understand cholesterol, we can refer to reliable sources of information, such as medical textbooks, health websites, or consult with healthcare professionals.

2. Nitrogen elements:
Nitrogen is a chemical element that is essential for all living organisms. It makes up about 78% of the Earth's atmosphere and is a key component of proteins, DNA, and RNA. To understand nitrogen elements, you can refer to chemistry textbooks or online resources that cover the properties, uses, and compounds related to nitrogen.

3. Amylase:
Amylase is an enzyme that plays a crucial role in the digestion of carbohydrates. It helps to break down complex carbohydrates (such as starch) into simpler sugars, allowing the body to absorb and use them for energy. To understand amylase, you can refer to biology textbooks, biochemistry resources, or medical literature that explains its function, sources, and significance in the digestive system.

4. Nitrogen:
Nitrogen is a chemical element with the symbol N and atomic number 7. It is an essential element for the growth of plants and animals, as well as for the functioning of various biochemical processes within organisms. To learn more about nitrogen, you can explore chemistry textbooks, scientific articles, or educational websites that provide detailed information about its properties, compounds, and its role in different areas such as agriculture, ecology, and industry.

5. Amino acids:
Amino acids are the building blocks of proteins. There are 20 different amino acids commonly found in living organisms, each with its unique properties and functions. To understand amino acids, you can refer to biochemistry textbooks, molecular biology references, or online resources that explain their structure, classification, role in protein synthesis, and their importance in various biological processes.