Question:
Match List-I with List-II regarding animal primary byproducts and their secondary products
List-I (Primary byproducts) List-II (Secondary byproducts) (A) Calf stomach (I) Heparin (B) Lung (II) Keratin (C) Bones (III) Rennin (D) Horn. (IV) Gelatin.
Choose the correct answer from the options given below
Match List-I with List-II regarding animal primary byproducts and their secondary products
| List-I (Primary byproducts) | List-II (Secondary byproducts) |
|---|---|
| (A) Calf stomach | (I) Heparin |
| (B) Lung | (II) Keratin |
| (C) Bones | (III) Rennin |
| (D) Horn. | (IV) Gelatin. |
Choose the correct answer from the options given below
Show Hint
Valuable byproduct derivatives:
- Calf abomasum = Rennin (used for cheese making).
- Animal lungs = Heparin (anticoagulant drug).
- Bones = Gelatin (from hydrolyzed collagen).
- Horns/Hooves = Keratin.
- Calf abomasum = Rennin (used for cheese making).
- Animal lungs = Heparin (anticoagulant drug).
- Bones = Gelatin (from hydrolyzed collagen).
- Horns/Hooves = Keratin.
Updated On: Jul 24, 2026
- (A) - (I), (B) - (II), (C) - (III), (D) - (IV)
- (A) - (II), (B) - (I), (C) - (III), (D) - (IV)
- (A) - (I), (B) - (II), (C) - (IV), (D) - (III)
- (A) - (III), (B) - (I), (C) - (IV), (D) - (II)
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
Slaughterhouse byproducts include non-carcass parts of the animal that can be processed into valuable secondary products, such as pharmaceuticals, industrial proteins, and gelatin.
Step 2: Detailed Explanation:
Let us match each primary byproduct with its corresponding secondary product:
- (A) Calf stomach (specifically the abomasum of unweaned calves): This organ contains high levels of the proteolytic enzyme rennin (chymosin).
Rennin is extracted to produce calf rennet, which is used in the cheese industry to coagulate milk casein.
This matches with (III).
- (B) Lung: Animal lungs are a rich source of heparin, a highly sulfated glycosaminoglycan.
Heparin is extracted from lung tissue and purified for use as an anticoagulant drug in human medicine.
This matches with (I).
- (C) Bones: Bones contain a high percentage of collagen.
Subjecting cleaned bones to partial hydrolysis breaks down this collagen, yielding gelatin, which is used as a gelling agent in food, pharmaceutical capsule shells, and photography.
This matches with (IV).
- (D) Horn: Horns and hooves consist of hard, fibrous structural proteins called keratins.
These can be processed to extract keratin hydrolysates for use in animal feed, organic fertilizers, and cosmetics.
This matches with (II).
Therefore, the correct matching sequence is: (A) - (III), (B) - (I), (C) - (IV), (D) - (II).
Step 3: Final Answer:
The correct matching sequence corresponds to option (D).
Slaughterhouse byproducts include non-carcass parts of the animal that can be processed into valuable secondary products, such as pharmaceuticals, industrial proteins, and gelatin.
Step 2: Detailed Explanation:
Let us match each primary byproduct with its corresponding secondary product:
- (A) Calf stomach (specifically the abomasum of unweaned calves): This organ contains high levels of the proteolytic enzyme rennin (chymosin).
Rennin is extracted to produce calf rennet, which is used in the cheese industry to coagulate milk casein.
This matches with (III).
- (B) Lung: Animal lungs are a rich source of heparin, a highly sulfated glycosaminoglycan.
Heparin is extracted from lung tissue and purified for use as an anticoagulant drug in human medicine.
This matches with (I).
- (C) Bones: Bones contain a high percentage of collagen.
Subjecting cleaned bones to partial hydrolysis breaks down this collagen, yielding gelatin, which is used as a gelling agent in food, pharmaceutical capsule shells, and photography.
This matches with (IV).
- (D) Horn: Horns and hooves consist of hard, fibrous structural proteins called keratins.
These can be processed to extract keratin hydrolysates for use in animal feed, organic fertilizers, and cosmetics.
This matches with (II).
Therefore, the correct matching sequence is: (A) - (III), (B) - (I), (C) - (IV), (D) - (II).
Step 3: Final Answer:
The correct matching sequence corresponds to option (D).
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