I had a quick look at StemQ but so far I cannot tell how the double "A:" did happen.
You wouldn't have added it manually in the title by any chance?
For now, please update the title to simply read "A: What is an enzyme?" and StemQ should add your answer to the question after a short while.
Hey,
no problem
it should be working now.
Thanks for your support
Regards
Chapper