B1- Microscopy Flashcards
What do microscopes allow us to see?
Things that we can’t see with the naked eye.
What is the main function of light microscopes?
Use light and lenses to form an image and magnify a specimen.
What types of structures can light microscopes help us see?
Individual cells and large subcellular structures, like nuclei.
How do electron microscopes differ from light microscopes?
They use electrons instead of light to form an image.
What is a key advantage of electron microscopes?
Higher magnification and higher resolution.
Define resolution in the context of microscopy.
The ability to distinguish between two points.
What can electron microscopes allow us to see in more detail?
Internal structures of mitochondria, chloroplasts, ribosomes, and plasmids.
What is the formula for calculating magnification?
magnification = image size / real size.
What must image size and real size have in common for magnification calculations?
They should have the same units.
Fill in the blank: To convert micrometers to millimeters, you need to divide by _______.
1000.
What is the standard form of the number 0.0025 mm?
2.5 x 10^-3.
How do you represent a very small or large number in standard form?
By moving the decimal point and using a power of 10.
True or False: The first number in standard form must be between 1 and 10.
True.
What is the significance of the power of 10 in standard form?
It represents how many places the decimal point has moved.
What is the image size if a specimen is 50 um wide and viewed under a magnification of x 100?
5 mm.
