A single cell is not life, it has life, meaning that it has some degree of spirit, or it does not. If it doesn't have some degree of spirit then it is dead. I see no reason you should be perplexed.
A cell is not life nor is it spirit just as a human is not life nor spirit, neither the cell nor any human even truly possess spirit, it's the other way around.
How would an engineered organism not possess life? Think of a craftsman who fabricates swords but all of the iron deposits have been found and used for other things. How does this craftsman then make his sword?
He takes something that is steel and melts it down. He simply moves the steel from one form to another. This your scientists can do. They can take life, DNA or RNA, and move it into another cell and take credit for "creating life" when actually they've only moved it.
Souls (sentient energy/spirit) choose to join with a biologic to separate from God for a short while in order to develop into an individual being, learning right from wrong and the consequences of action and inaction. It's kind of like an 18 year old moving away from home and into their own apartment.
On the earth, we are tested but not by God, by other beings undergoing the same test in the same incredible school of life. We come here by choice because this is the best school in the universe.
If anyone ever wants to know the key to getting into heaven, this is it: Realize, better yet, remember, that you are an everlasting soul (spirit/God fragment) that is inhabiting an incredibly selfish temporary vehicle for a very short time.
Compare anything a human does with the eternity of the universe, there is no comparison. The new SUV will not go with you to heaven. The nice house with polished granite countertops will not last nearly as long as the mature developed soul.
The only thing to do then is to learn everything you can, experience everything you can, take with you many memories. Live, and purge away any selfish thoughts. What you do for someone you've never met is worth a thousand times more than what you do for your best friend.
No human ever goes to heaven, the human body couldn't even exist there. Humans turn to dust.