Question

......... is the essential component of all living organisms.

• A. Hemoglobulin
• B. Protein
• C. Chlorophyll
• D. Carbohydrate

Answer 1

The correct option is B Protein

Proteins are the most versatile biomolecules having a variety of structural and functional roles. Proteins are body building biomolecules found in all classes of organisms. Certain biomolecules are present in only particular group of organisms. For example, hemoglobin is the respiratory pigment found in higher animals only. Chlorophyll are found in photosynthetic autotrophic organisms only. No living system is possible without proteins. Hence, proteins are the essential components of all living organisms.