No
There is a SYSTEM in place that we must adhere to.
No
No, it's a noun. Incidentally, "end of the week" is not a sentence, it is a phrase.
A preposition refers to the position of an object therefore in this sentence "at home" is the prepositional phrase
No, that wouldn't be a complete sentence. You could end a phrase with are. eg You are stupid. No I am not. You are!
Yes, as a matter of fact, a prepositional phrase is usually stated at the end of most sentences.
The noun or pronoun at the end of a prepositional phrase is the object of the preposition.
Yes. There is no word or phrase in English that cannot begin or end a sentence.
Both - A full-stop indicates the end of the current sentence or phrase, and lets the reader know a new sentence or phrase is about to start.
Yes, it is, 'the end' is a sentence just like 'happy birthday', you may always f there are no subject and predicate in that little phrase but it's a sentence!
Where is the sentence? If you mean in the one you just stated, in this sentence is the prepositional phrase.
When you put glue on something it is adhesive. answer: "Adhesive" is a noun or an adjective. "Adhere" is a verb. I tried to adhere fake nails onto my real nails, but they kept popping off.