alleryThe thick filament of a muscle fibril is a polymer of
Aactin
Bmyosin
Ctroponin
Dtropomyosin
Answer & Solution
Correct answer: B. myosin
1. The two filament types are built from different proteins.
2. The thick filament is a polymerised protein called myosin.
3. Many monomeric proteins called meromyosins make it up.
4. Actin, troponin and tropomyosin all belong to the thin filament.
_Source: syllabus Biology Ch17 'Locomotion and Movement'_
Keep practising Unit 8F: Human Physiology: Digestion, Excretion & Homeostasis
Browse all Unit 8F: Human Physiology: Digestion, Excretion & Homeostasis questions for AP Biology, or explore more Biology topics.
Related questions
Follow the filtrate down to urineWhich protein runs alongside the actin filaments throughout their length?The two parts of a meromyosin are calledIn a resting muscle, the active binding sites on actin are masked byThe thin filament of a muscle fibril is made of two filamentous strands ofThe functional unit of a muscle fibril, lying between two successive Z-lines, is theThe dark band of a muscle fibril, containing myosin, is called theThe band of a muscle fibril that contains only actin is the