Biology Microscopy Flashcards
1
Q
What is the aim?
A
- Prepare microscope slides to show onion skin cells and their contents
- Use an optical microscope to observe and draw the cells in an onion skin
- Create a scientific drawing, identifying structures within the cells and labelling them
2
Q
What does a light microscope use?
A
Visible light and lenses to magnify small objects like cells
3
Q
What do you use to stain the cells?
A
Iodine solution
4
Q
What is the purpose of switching to a higher power lens during microscopy?
A
To increase the magnification
5
Q
What is the purpose of using fine adjustment knob when observing cells at low power?
A
To change the focus of the microscope
6
Q
What is the purpose of the microscope slide coverslip?
A
To hold the biological specimens in place
7
Q
Why is iodine solution commonly used as a stain in onion cell microscopy
A
It binds and stains starch
8
Q
What does methylene blue solution bind to in cheek cell microscopy
A
Nucleic acids like DNA
