What proteins are found in a sarcomere?

Actin, Myosin, Troponin and Tropomyosin

The sliding filament theory of muscle contraction involves;

Calcium ions binding with troponin, which shifts tropomyosin and allows the myosin-binding sites on actin to be exposed

Calcium ions releasing ATP for energy

Neuromuscular junctions directly producing the movement of actin and myosin

Actin filaments moving the myosin filaments in each sarcomere

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Phillip McKelvey 6 perguntas 8.160 visualizações

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1What proteins are found in a sarcomere?
1. AOnly Actin and Myosin
2. BActin, Myosin, Troponin and Tropomyosin
3. CThe Myofibril
4. DThe Sarcoplasmic Reticulum
2Myofibrils have light and dark bands called neuromuscular junctions.
1. AVerdadeiro
2. BFalso
3The contractile elements of muscle fibres are called ________.
1. ASarcoplasm
2. BMyofibrils
3. CThe Sarcoplasmic Reticulum
4. DFasciculi
4The sliding filament theory of muscle contraction involves;
1. ACalcium ions releasing ATP for energy
2. BCalcium ions binding with troponin, which shifts tropomyosin and allows the myosin-binding sites on actin to be exposed
3. CNeuromuscular junctions directly producing the movement of actin and myosin
4. DActin filaments moving the myosin filaments in each sarcomere
5The junction between a nerve and a muscle is called a_____________.
1. ANeuromuscular junction
2. BSynapse
3. CSarcomere
4. DNeurotransmitter
6A muscle contraction begins with release of _______, which reaches a sarcolemma, depolarizing the sarcolemma.
1. ACalcium
2. BATP
3. CTroponin
4. DAcetylcholine

Descrição: Short knowledge check to see understanding of sliding filament theory
Autor: Phillip McKelvey
Idioma: English
Visualizações: 8.160
Etiquetas: sliding filament theory actin myosin sarcomere
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