Bacterial cell walls contain which makes them different from other organisms

Bacterial cell walls contain peptidoglycan, which makes them different from other organisms.
The other name for the "Peptidoglycan" is "Murein". This is made of sugars and amino acids and makes a layer outside the plasma of a bacteria. Both gram positive and gram negative cell walls contain peptidoglycan.

examples of nucleic acids are deoxyribonucleic acid (dna) and ribonucleic acid (rna).

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.