This is an alternate content page containing a Sorting Activity. It has opened in a new window.
The activity has categories and cards. Cards may have text or an image. Assign the cards to the proper categories.

Categories:
Essential
Non-essential

Card 1:
Text: Phenylalanine
Card 2:
Text: Alanine
Card 3:
Text: Glutamate
Card 4:
Text: Aspartate
Card 5:
Text: Cysteine
Card 6:
Text: Leucine
Card 7:
Text: Arginine
Card 8:
Text: Histidine
Card 9:
Text: Lysine
Card 10:
Text: Methionine
Card 11:
Text: Tyrosine
Card 12:
Text: Glycine
Card 13:
Text: Valine
Card 14:
Text: Glutamine
Card 15:
Text: Serine
Card 16:
Text: Asparagine
Card 17:
Text: Isoleucine
Card 18:
Text: Tryptophan
Card 19:
Text: Threonine
Card 20:
Text: Proline