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- The chemical level is the most basic level of structural organization.
- The chemical level can be compared to the letters of the alphabet.
- The chemical level includes atoms, which are the smallest units of matter that participate in chemical reactions.
- The chemical level also includes molecules, which are formed when two or more atoms join together.
- Certain atoms are essential for maintaining life.
- Essential atoms include carbon (C), hydrogen (H), oxygen (O), nitrogen (N), phosphorus (P), calcium (Ca), and sulfur (S).
- Deoxyribonucleic acid (DNA) is a molecule that serves as the genetic material passed from one generation to the next.
- Glucose is a molecule commonly known as blood sugar.
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