Understanding Cells and Microscopes

What is the primary distinction between eukaryotic and prokaryotic cells?

• Eukaryotic cells have a nucleus, while prokaryotic cells do not.

• Prokaryotic cells have a nucleus, while eukaryotic cells do not.

• Eukaryotic cells are single-celled, while prokaryotic cells are multi-celled.

• Both have a nucleus, but eukaryotic cells are larger.

Who is credited with inventing the first microscope?

• Isaac Newton

• Galileo Galilei

• Robert Hooke

• Antonie van Leeuwenhoek

Which microscope can magnify an image up to 500,000 times?

• Simple microscope

• Compound microscope

• Electron microscope

• Light microscope

What is the resolving power of a light microscope?

• 0.5 nanometers

• 200 nanometers

• 1000 nanometers

• 500 nanometers

What is a key advantage of using a light microscope?

• It can view live cells with minimal preparation.

• It has the highest magnification available.

• It requires no light source.

• It is the most expensive type of microscope.

What is a disadvantage of using an electron microscope?

• It requires samples to be dead and dehydrated.

• It has low magnification.

• It is inexpensive and easy to use.

• It can only view live samples.

Which type of electron microscope is best for viewing internal structures?

• Scanning Electron Microscope (SEM)

• Transmission Electron Microscope (TEM)

• Compound Microscope

• Light Microscope

What is the purpose of coating a sample with gold or palladium in SEM?

• To prevent dehydration

• To increase magnification

• To generate 3D images

• To enhance color

How do you calculate the actual size of an object from a micrograph?

• Add image size to magnification

• Divide image size by magnification

• Subtract magnification from image size

• Multiply image size by magnification

How many micrometers are there in one millimeter?

• 100

• 10,000

• 100,000

• 1000