Many organisms have unusual behaviors or characteristics when compared to similar organisms. For example, spiders are known for being almost completely carnivorous. They’ve evolved to have fangs and venom to help them catch and paralyze prey. However, scientists have recently discovered one unusual species of spider that eats an almost completely vegetarian diet. Think of an organism you’ve heard of or read about that has a surprisingly unusual trait or behavior. How is this trait or behavior different from similar organisms? How does it help the organism survive in its environment?

what? are the statements?

copper and glass have high electrical conductivity

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.