An onion typically does not contain "cards," as it is a vegetable and not a deck of playing cards. If you're referring to layers, an onion can have anywhere from several to many layers, depending on its size and variety. Each layer is made up of fleshy scales that are tightly packed together.
An onion has 16 chromosomes.
There are about 48 calories in 1 cup of purple onion.
Onion (Allium cepa) has 16 chromosomes (2n= 16)
RAW29.7 carbs in 9.9 ounces of raw onion.
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I do not detect any flavor differences in the two.
An onion can be considered a vegetable with many layers. Each layer is thin and distinct, contributing to the overall flavor and composition of the vegetable.
Around 500 grams are in a large brown onion.
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Onions come in MANY different sizes. A whole onion could be 3 ounces or over a pound.
Have you ever noticed how onions can be many sizes ? 1 chopped onion could be 0.5 cup to about 1.5 cup