7 points for each answer plus brainliest The length of days and nights at any location on Earth depends on the Earth's position with respect to the sun. Esmeraldas is at latitude 01°00'N. Which of these statements best describes the length of days and nights at Esmeraldas in the months of January and June? (1 point)
The days are longer in January and shorter in June.
The days are longer in June and shorter in January.
The lengths of days and nights are almost same in June and January.
The lengths of days are shorter and nights are longer in both June and January.

the answer is: the „power stroke“ step.

muscle contraction can be divided into a few steps:

1. the release of ach (acetylcholine) in the synaptic cleft, binding of ach for its receptor and consequently opening of the ca channels.

2. the release of ca, binding of ca for the troponin

3. troponin shifting the tropomyosin, which was blocking the active site on the actin

4. myosin heads attaching to actin by breaking down atp to adp+ pi

5.   formation of the ‘cross-bridge’ on the active site of the actin filament by myosin head

6. “power stroke” -the cross bridge pulls actin, which slides over the myosin

9.     7. the release of adp completes the cross-bridge movement and atp attaches to myosin, breaking the actin-myosin cross bridge.