Human Cell Structure and Nutrition
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Human Cell Structure
Cell Components
Human cells consist of three main structures:
- Plasma Membrane: The outer membrane protecting the cell, regulating nutrient intake and waste removal.
- Cytoplasm: A water-based solution containing dissolved substances and protein fibers forming the cytoskeleton. Organelles within the cytoplasm include ribosomes, mitochondria, endoplasmic reticulum, Golgi apparatus, vacuoles, and lysosomes.
- Nucleus: The spherical control center containing:
- Nuclear Membrane: Separates the nucleus from the cytoplasm.
- Nucleoplasm: The watery solution inside the nucleus.
- Chromatin: Genetic material (DNA) responsible for cell control, organized into chromosomes.
- Nucleolus: Composed of RNA and proteins, responsible for ribosome organization.