Cell Theory

• Cell theory is a fundamental concept in biology.
• It states that all living organisms are composed of cells.
• Cells are the basic units of structure and function in living organisms.
• All cells arise from pre-existing cells through cell division.

Cell Theory:

• All living organisms are composed of cells
• Cells are the basic units of structure and function in living organisms
• All cells arise from pre-existing cells through cell division
• Cell theory is a fundamental concept in biology

Types of Cells

• Prokaryotic Cells: Simple cells without a nucleus

• Eukaryotic Cells: Complex cells with a nucleus

• Animal Cells: Lack cell walls and chloroplasts

• Plant Cells: Have cell walls and chloroplasts

Animal Cells

Trivia: Animal cells lack cell walls and chloroplasts, which are found in plant cells. This means that animal cells cannot produce their own food through photosynthesis. Instead, they rely on consuming other organisms for energy. Animal cells are also eukaryotic, meaning they have a true nucleus and membrane-bound organelles.

Cell Organelles

• Nucleus: Controls cell activities

• Endoplasmic Reticulum: Transports proteins

• Golgi Apparatus: Modifies and packages proteins

• Mitochondria: Produces energy

• Lysosomes: Breaks down waste