I think option three is most realistic, someone correct me if I'm wrong.
Hope this helps :)
the acidic levels of pH inside the vagina is one of the top reasons why sperm die.
1. They are scared to admit the fact that they are sick
2. They don’t know how to talk to someone about what’s wrong
3. They are scared of why could actually happen to them and what treatment they would need
According to the cross-bridge model of muscle contraction, the muscles stiffen after death because ATP cannot bind and directly release the myosin head from the actin filament.
<h3>What is myosin?</h3>
Myosin and actin are two essential proteins in muscle cells that interact during muscle contraction.
Adenosin Triphosphate (ATP) is a key high-energy molecule required during muscle contraction that binds to myosin and whose hydrolysis enables to produce movement.
In conclusion, according to the cross-bridge model of muscle contraction, the muscles stiffen after death because ATP cannot bind and directly release the myosin head from the actin filament.
Learn more about myosin and actin here:
brainly.com/question/23185374
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