Fundamentals of Cell Biology and Evolution

📋 Course Outline

1. Cell Biology
2. Genetics
3. Evolution
4. Human Physiology
5. Ecology

📖 1. Cell Biology

🔑 Key Concepts & Definitions

• Cell: The basic structural and functional unit of all living organisms; the smallest unit capable of life processes.
• Prokaryotic Cell: A simple cell without a nucleus, e.g., bacteria; characterized by a lack of membrane-bound organelles.
• Eukaryotic Cell: A complex cell with a nucleus and membrane-bound organelles, found in plants, animals, fungi, and protists.
• Organelle: Specialized structures within a cell that perform specific functions (e.g., nucleus, mitochondria, chloroplasts).
• Cell Membrane: A phospholipid bilayer that controls the movement of substances in and out of the cell.
• Cytoplasm: The gel-like substance within the cell membrane that contains organelles and is the site of many metabolic reactions.

📝 Essential Points

• All living organisms are made up of cells; multicellular organisms have specialized cell types.
• The nucleus contains genetic material (DNA) and controls cell activities.
• Mitochondria are the powerhouses of the cell, producing energy through cellular respiration.
• Plant cells contain chloroplasts for photosynthesis and a cell wall for structure, unlike animal cells.
• Cell division occurs via mitosis (for growth and repair) and meiosis (for reproduction).
• The cell cycle includes phases: interphase, mitosis, and cytokinesis.

💡 Key Takeaway