Biologie Flashcards
1-10
How do we calculate the total magnification of a scope?
Total Magnification= Eyepiece lens x objective lens
state the equation that links magnification, image size and actual size
Actual size= Image size/magnification
Why are samples stained before looking at it under the light microscope?
The see subcellular organelles clearly
What are the advantages of a light microscope over a electron microscope?
- cheap
- portable
- can view live cells
- can see cells in colour
What are the advantages of a electron microscope over a light microscope?
- higher resolution
- higher magnification
3.Can see smaller cellular organelles such as mitochondria
State the function of the cytoplasm
Site for chemical reactions such as anaerobic respiration to take place
state the function of the cell membrane
Controls what goes in and out of the cell
Name the subcellular structures that plant cells have that animals cells do not
Cell wall, permanent vacuole, Chloroplast
State the function of the cell wall
Strengthens the cell, provide support and defence
How is a prokaryotic cell different to a eukaryotic cell
No nucleus
Has Plasmid
Free DNA in cytoplasm
