Which biomolecule is an example of fibrous protein?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Myosin
Proteins are classed by molecular shape as fibrous or globular. Globular proteins, whose chains coil into a spherical shape, are usually soluble in water; insulin and albumins are examples. Epinephrine is not a protein at all: it is a small hormone molecule derived from an amino acid.
So the fibrous protein among the options is myosin, the protein of muscle fibres.
NCERT (2026-27 edition):
Fibrous Proteins
Note: The same/similar question has been asked in different years by NTA as per the details given below:
| 2026 | 2025 | 2024 | 2023 | 2022 |
|---|---|---|---|---|
| 07-06 S2 | 28-05 S1 | – | – | – |