I believe the correct answers are: post-synaptic receptors
and shape of the neurotransmitter.
In the lock-and-key analogy for neurotransmitters, the lock
refers to the post-synaptic receptors, whereas the key refers to the shape of
the neurotransmitter.
Analogy of key-and-lock refers to the binding to occur
between post-synaptic receptors and the shape of neurotransmitters, in which the
neurotransmitter and the receptor site must have perfectly complementing
shapes, as does a key that fits a lock.
Answer:
<em>American trappers and traders who moved out onto the Plains in the first half of the nineteenth century often sought to garner influence among Indian peoples by marrying influential Indian women. The women, in turn, stood to gain access to new goods and power by wedding the Americans.</em>
A very important issue that was social and cultural was concerning beliefs that were widespread, is that White Americans saw themselves as superior in the distribution of land and that Native Americans had no rights. This was coming from the racial hatered towards the Natives who were percieved as uncivilized and that they should move and make space for the white civilization. To testify this, we have the Indian Removal Act brought by president Jackson after the Creek war.
Record of teachings, deeds and sayings, and silent permissions of the islamic prophet Muhammad.
