
How can you classify the given proteins?
(a) Keratin
(b) Haemoglobin
(c) Albumin
(d) Myosin
(e) Collagen
(f) Insulin
Answer
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Hint:As we know that proteins are a polypeptide with more than hundreds of amino acids having molecular mass higher than ten thousand. On the basis of their molecular shape, proteins are classified into two types which are basically fibrous protein and globular proteins.
Complete step-by-step answer:As we know that proteins are classified into fibrous protein and globular proteins on the basis of their shapes. Let us talk about these proteins one by one.
Fibrous proteins are those when the polypeptide chains sum parallel and are held together by hydrogen and disulphide bonds, then fibre-like structures are formed and thus are called fibrous proteins. Such proteins are insoluble in water. Some examples of fibrous proteins include: Keratin, Myosin, collagen etc.
Then we have globular proteins when the polypeptide chains coil around to give a spherical shape, the formation of globular proteins takes place. Such proteins are soluble in water and some examples include: Haemoglobin, Albumin, Insulin etc.
Therefore, we can classify the given proteins as:
Keratin: Fibrous protein
Haemoglobin: Globular protein
Albumin: Globular protein
Myosin: Fibrous protein
Collagen: Fibrous protein
Insulin: Globular protein
Note:As we know that Keratin is found in human skin, hair and nails. Haemoglobin is the main protein which is present in red blood cells. Albumin is the serum protein which maintains the osmotic pressure of the body. Myosin helps in muscle contraction. Collagen is the most abundant protein found in skin, muscles, bones etc. and lastly insulin which is a hormone that helps in regulation of blood sugar.
Complete step-by-step answer:As we know that proteins are classified into fibrous protein and globular proteins on the basis of their shapes. Let us talk about these proteins one by one.
Fibrous proteins are those when the polypeptide chains sum parallel and are held together by hydrogen and disulphide bonds, then fibre-like structures are formed and thus are called fibrous proteins. Such proteins are insoluble in water. Some examples of fibrous proteins include: Keratin, Myosin, collagen etc.
Then we have globular proteins when the polypeptide chains coil around to give a spherical shape, the formation of globular proteins takes place. Such proteins are soluble in water and some examples include: Haemoglobin, Albumin, Insulin etc.
Therefore, we can classify the given proteins as:
Keratin: Fibrous protein
Haemoglobin: Globular protein
Albumin: Globular protein
Myosin: Fibrous protein
Collagen: Fibrous protein
Insulin: Globular protein
Note:As we know that Keratin is found in human skin, hair and nails. Haemoglobin is the main protein which is present in red blood cells. Albumin is the serum protein which maintains the osmotic pressure of the body. Myosin helps in muscle contraction. Collagen is the most abundant protein found in skin, muscles, bones etc. and lastly insulin which is a hormone that helps in regulation of blood sugar.
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