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Andru [333]
3 years ago
11

BRAINLYEST IF CORRECT! 2 QUESTIONS. HELP FAST PLEASE!!

Biology
1 answer:
Slav-nsk [51]3 years ago
7 0

Q5.

<span>The answer is A. In thermodynamics, the first law of conservation states that energy can never be destroyed or created but can only be transformed from one form to another. Therefore part of the electric energy was converted to light energy while the other dissipated as heat. However, the summation of the energy of these tow outputs in joules remains the same as initial electric energy.
</span>


<span />

Q6

<span>The answer is B. This is because the water in the dam is used to turn turbines hence this form of energy is mechanical energy. As the turbines turn, they turn electromagnets that convert the mechanical energy into electrical energy</span>




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The acetycholine binds with the receptors  on the saccolemma to causes opening of Na+ , its influx to causes depolarizarion  of the sacolemma. The depolarization of the latter spreads along the transverse tubules, This depolarization causes increases in the permeability of the sacorplasmic reticulum, with opening of ca+ channels and diffusion of Ca+ out of the  S. reticulum.

The Ca+ binds to troponin,and tropomyosin  exposed the myosin-binding sites on actin filament . The myosin head forms the cross bridges with the filament, and therefore the sacomere shortens leading causing muscle contraction.

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