Different Cells do different things
For examole you have Bloodcells which are specialised to transfer everything the organism needs, you have cells which makes nerves which are specialised to send and recieve impluses
The answer is; A
When an impulse from the motor neuron reached the neuromuscular junction, the voltage-dependent calcium channels are activated and the neurotransmitter released from the presynaptic cleft. When the neurotransmitter binds to their receptors on the sarcolemma, the muscle fibers become depolarised; the calcium is released from their vesicles. The Ca2+ ions are important in the power stroke because they bind to troponin. Upon binding calcium, troponin moves tropomyosin away from the myosin-binding sites on actin. Powered by the energy from ATP molecule, the myosin is able to bind on the actin and slides over the actin filament.
Answer:
<em>The correct option is A) organizational ecosystem</em>
Explanation:
The biotic and abiotic factors of an area combine to form an ecosystem. In another way, we can say that a community along with its non-living components makes us an ecosystem.
There are different levels of ecology which include species, population, community, ecosystem, biosphere.
The phenomenon of an ecosystem is related to business as well. Just like an ecosystem, different parts of a business are related to one another and the relationships between them matter.
Eukaryotic cells contain membrane-bound organelles, such as the nucleus, while prokaryotic cells do not. Differences in cellular structure of prokaryotes and eukaryotes include the presence of mitochondria and chloroplasts, the cell wall, and the structure of chromosomal DNA.
Hope this helps :)