Could celery be a simple carbohydrate?

No, celery is not a simple carbohydrate.

Here's why:

* Celery is primarily made up of fiber and water. It contains very little starch, which is the source of simple carbohydrates.

* Simple carbohydrates are sugars. These are quickly digested and provide a rapid burst of energy. Examples include glucose, fructose, and sucrose.

* Celery contains complex carbohydrates. These are starches that take longer to digest and provide a sustained release of energy.

Therefore, celery is considered a low-carbohydrate vegetable, with a negligible amount of simple carbohydrates.