Example of 'globular' proteins is __________ ?
Correct answer: B. Enzymes
- A. Peptide
- B. Enzymes
- C. Primary protein
- D. Secondary proteins
Explanation
Globular proteins fold into compact, roughly spherical structures, and enzymes are the main biological examples because their folded shapes create active sites. A student may choose “primary protein” by confusing a level of protein structure with a structural class; primary structure means the amino acid sequence, not globular shape.
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About Classification of Proteins
Proteins are classified by composition as simple, conjugated and derived proteins, and by shape as fibrous or globular proteins. The topic relates these classes to examples such as albumin, keratin, collagen, haemoglobin and casein, while distinguishing structural proteins from proteins with transport, catalytic or regulatory roles.
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