Question words at the end or beginning? (e.g. "Nide baba shi shei?") So far, question words in Chinese have always appeared at the end.  But with &quot;shei&quot; I saw sentences like

Shei shi nide baba?

So can it be used at the start or end of a sentence? Can we say

Nide baba shi shei?

as well? And also &quot;Shei shi nage ren?&quot; or &quot;Nage ren shi shei?&quot; (Who is that person?)
Is this restricted to shei or can it be extended to other question words like shenme, zenme, duoshao and nali/nar though  words like ma and ne I know are always placed at the end?
Edit: I'm confused by this:

Translate this sentence
谁是你的爸爸
[your] [Wang] [individuals] [how] [mornings] [is] [dad] [Who]
(screenshot)
Translate this sentence
Who is this person?
谁是这个人？
Oops!  That's not correct.
这个人是谁？
(screenshot)
Chinese is one of the group languages in which question words remain exactly in place of the "questioned" word they replace.

那个人是谁 - 那个人是我妈妈


In English and some other European languages question words always move to the head of the utterance.

Who is this person? This person is my mother.


I highly suspect your examples from Memrise (or whatever that app is) are simply a result of an English speaker (not very fluent in Chinese) translating them to Chinese.

One other explanation:

谁是你爸爸 ~ “which one is your dad"


while 

你爸爸是谁 ~ “and who [exactly] is your dad?"


So, at the beginner level, stick to placing question words in the same position the answer would occupy.