test of protein? please explain me
Answers
Answer:
Following steps are used to test if a food item contains protein.
1) Take a small quantity of the food item to be tested.
2) Grind/mash the food item.
3) Put the food item into a test tube.
4) Add 10 drops of water and shake the test tube.
5) Add two drops of copper sulphate solution to the test tube, using a dropper.
6) Add 10 drops of caustic soda solution using a dropper and shake the test tube.
7) Let the test tube rest in a test tube stand for a few minutes.
8) Observe the colour of the mixture.
9) Violet colour indicates the presence of proteins in the tested food item.
Answer:
We often see bodybuilders and physical trainer drinking whey protein along with milk to build-up metabolism and strength.When it comes to our body, our hair and nails are mostly made of proteins. Basically, proteins are the fundamental building blocks of our body. They are large and complex macromolecules or bio-molecules which perform a major role in the functioning and regulating of our body cells, tissues and other organs in the human body. They are also used in providing strength to our body in producing hormones, enzymes, and other metabolic chemicals. They are also involved in functioning and regulating of our body cells, tissues and organs.
Proteins are composed of amino acids, arranged into different groups. These fundamental amino acids sequences are specific and its arrangements are controlled by the DNA. Since our body cannot synthesize these essential amino acids by its own, we should have plenty of protein foods in our everyday diet to keep our body metabolisms stable.In general, they are two types of protein molecules fibrous proteins and globular proteins. Fibrous proteins are insoluble and elongated. Globular proteins are soluble and compact. Fibrous and Globular proteins may comprise one or four types of protein structures and they include primary, secondary, tertiary and quaternary structure.
Primary Structure: It is a specific sequence of amino acids. The order of amino acids bonded together is detected by information stored in genes.
Secondary Structure: It is a three-dimensional form of a local segment of proteins. They are formed by hydrogen bonds between the atoms along the backbone of the polypeptide chain.
Tertiary Structure: It is determined by R-groups. It is a three-dimensional shape of a protein. Many numbers of tertiary structure fold to form Quaternary Structure.