system
Given the following post, respond as if you're commenting on Reddit:
human
Is an unripened fruit nutritionally identical to a ripe one?

You'll remove a fruit from it's plant, and over time it ripens.  Is anything changing nutritionally within the plant during the ripening process?  

Example: Does a green banana have less sugar than a yellow banana?  

Something along those lines.
gpt
Fruit ripens because of enzymes converting starch and other polysaccharides to sugars. So while an unripened fruit will be high in starches (the banana example has been mentioned already) a ripe fruit usually has a significantly higher sugar content.