The characteristics that would disqualify a newly discovered biological structure from being called a cell is the lack of a stiff outer layer for support and protection (option D).
What is a cell?
A cell is the basic unit of a living organism, consisting of a quantity of protoplasm surrounded by a cell membrane, which is able to synthesize proteins and replicate itself.
One major feature of every cell is the possession of a membrane that surrounds the cell, which is called cell/plasma membrane.
According to this question, the characteristics that would disqualify a newly discovered biological structure from being called a cell is the lack of a stiff outer layer for support and protection.
Learn more about a cell at: https://brainly.com/question/3142913
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