The hind legs, I believe. That's why they are longer and stronger.
Answer:A. The release of calcium ions causes myosin and actin to attach to each other.
The contraction of skeletal muscles takes place by induction of a nerve impulse, which produces a movement and the interaction of the filaments containing proteins named as actin and myosin. This interaction of filaments is regulated by proteins called tropomyosin and troponin present on the actin filaments. The motor nerve causes the depolarization of the muscle membrane sarcolemma. This triggers the sarcoplasmic reticulum to release calcium ions. This calcium binds to troponin and thus allows the tropomyosine strand on the actin filament to displace so that the part of the actin where myosine head needs to be attached remain uncovered. Binding of the actin myosine filament results in contraction.
Hence, the release of calcium ions causes myosin and actin to attach to each other causes muscle contraction.
Answer:
the following is not a Metamorphic agent is lithification
Answer:
Explanation:
La contaminación de mares y océanos es una realidad creciente en estos tiempos y esto tiene graves consecuencias para la vida marina, como problemas de desorientación, alteraciones en las cadenas alimentarias, toxicidad para la fauna marina, destrucción de los ecosistemas marinos e, incluso, acaba habiendo también consecuencias para el ser humano.
En este artículo de EcologíaVerde veremos exclusivamente cómo afecta la contaminación del agua a los animales marinos, pues es necesario tomar consciencia del perjuicio que supone este gran problema ambiental para todos y no solo para las personas.
