Microscopy 2 light and electron microscopes

• What are the two types of microscopes discussed in the video?

  Light microscopes and electron microscopes
• Why are light microscopes considered conventional microscopes?

  They are commonly used in classrooms
• What is an advantage of light microscopes?

  They are small, easy to use, and cheap
• What limits the resolution of light microscopes?

  They rely on light with a wavelength of 0.2 micrometers
• What happens to details less than 0.2 micrometers apart when viewed with a light microscope?

  They appear blurry
• What types of structures can light microscopes not effectively study?

  Sub-cellular structures like mitochondria
• What are the characteristics of electron microscopes?

  They are big, expensive, and hard to use
• What is the benefit of using electrons in electron microscopes?

  Electrons have a wavelength of just 0.1 nanometers
• How does the resolution of electron microscopes compare to light microscopes?

  Electron microscopes have 2,000 times better resolution
• What is the maximum resolution of electron microscopes?

  0.1 nanometers
• Why is a smaller resolution value better?

  It allows seeing tinier details
• What can electron microscopes be used to study effectively?

  Sub-cellular structures like mitochondria
• What is a key difference in the images produced by light and electron microscopes?

  Electron microscopes provide higher magnifications without blurriness
• What are the pros and cons of light and electron microscopes?

  Light Microscopes:

  • Pros: Small, easy to use, cheap
  • Cons: Limited resolution (0.2 micrometers)

  
  

  Electron Microscopes:

  • Pros: High resolution (0.1 nanometers)
  • Cons: Large, expensive, hard to use
• What type of cell was shown in the electron microscope image?

  A pancreatic cell
• What can be clearly seen in the electron microscope image of the pancreatic cell?

  The nucleus and some mitochondria