Cell Structure and Function

📋 Course Outline

1. Cell Fundamentals and Components
2. Organelles and Cellular Functions
3. Movement Across Cell Membranes
4. Cell Cycle and Differentiation

📖 1. Cell Fundamentals and Components

🔑 Key Concepts & Definitions

• Cell membrane : a mostly lipid boundary containing proteins that regulates movement into and out of the cell and is selectively permeable
• Cytoplasm : a gel-like component containing the cytoskeleton and suspended organelles
• Nucleus : contains DNA and is separated from the cytoplasm by a nuclear envelope that protects DNA and controls movement

📝 Essential Points

• The three main cell components are:

  • the cell membrane
  • the nucleus
  • the cytoplasm

• Cells are the units of life, and they vary in size, shape, content, and function.

• Cells are controlled by genes, and different cells use different genetic instructions.

💡 Memory Hook

MNC: membrane, nucleus, cytoplasm

📖 2. Organelles and Cellular Functions

🔑 Key Concepts & Definitions

• Mitochondria : capture and release energy for the cell through cellular respiration, and their amount varies among different cells

• Ribosomes are found on the rough endoplasmic reticulum and in the cytoplasm, where they carry out protein synthesis.