Answer:
its a
Explanation:
eukarya and eukaryotic see the similarities?
I do not know but does it depend on how big or what the temperature is
False, Eukaryotic cells always contain a nucleus, prokaryotic cells do not have a nucleus.
Answer:
A, C and D
Explanation:
It creates no ionic bonds because it would need certain changes to it.
Im not so sure about E because the configurations are very similar.
And A seems to make sense because its essential to life itself.
Answer:
False.
Explanation:
Neurotransmitter release occurs from the nervous terminal or varicosities in the neuronal axon. When an action potential reaches the nervous terminal, the neurotransmitter is released by exocytose. The molecule binds to its receptor in the postsynaptic neuron, triggering an answer. As long as the signal molecule is in the synaptic space, it keeps linking to its receptor and causing a postsynaptic response. To stop this process the neurotransmitter must be taken out from the synaptic space. There are two mechanisms by which the neurotransmitter can be eliminated:
• Enzymatic degradation/deactivation: There are specific enzymes in the synaptic space, which are in charge of inactivating the neurotransmitter by breaking or degrading it. The enzyme acetylcholinesterase prevents ACh from continuing to stimulate contraction.
• Reuptake: Receptors located in the presynaptic membrane can capture de molecule to store it back in new vesicles for posterior use. These transporters are active transport proteins that easily recognize the neurotransmitter.
