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Knowledge and Skills Statement

Science concepts--biological structures, functions, and processes. The student knows the significance of matter cycling, energy flow, and enzyme in living organisms.
Glossary terms and definitions are consistent across kindergarten through high school in the TEKS Guide. The definitions are intended to give educators a common understanding of the terms regardless of what grade level they teach. Glossary definitions are not intended for use with students.

a substance, usually a protein, that acts as a catalyst in biochemical reactions within living organisms and speeds up reactions without itself being consumed