Cellular Structure and Homeostasis
Aligned to HS-LS1 — Next Generation Science Standards.
What this lesson teaches
Cells maintain stable internal conditions (homeostasis) through structures and feedback. Specialized cells and systems keep organisms functioning.
Worked example
When you exercise, your body sweats to cool down — a feedback mechanism keeping internal temperature stable (homeostasis).
Practice questions
- Define homeostasis with an example.
- How does feedback keep a system stable?
- Why do multicellular organisms need specialized cells?
Watch the lesson
Every lesson comes with a video taught in English and Spanish — the same video the QR code in the printed workbook opens.
▶ Watch this lessonEn español
Estructura celular y homeostasis
Las células mantienen condiciones internas estables (homeostasis) mediante sus estructuras y mecanismos de retroalimentación. Las células y los sistemas especializados mantienen el funcionamiento de los organismos.
Ejemplo: Cuando haces ejercicio, tu cuerpo suda para enfriarse — un mecanismo de retroalimentación que mantiene estable la temperatura interna (homeostasis).
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