What is NOT true about the evidence that fossils provide?

A. Some fossil organisms are transitional forms between groups of organisms.
B. Fossil organisms often share physical similarities with living organisms.
C. All fossils contain intact DNA that can be sequenced.
D. Fossil ages can often be determined by testing nearby rocks.

d.

explanation:

is in the form atp or adenosine triphosphate

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.