Cells And Movement Across Cell Membranes Flashcards
Animal cell parts (4)
- cell membrane
- cytoplasm
- nucleus
- mitochondria
Cell membrane
Controls what enters and exits the cell
Cytoplasm
Where the chemical reactions happen
Nucleus
Contains chromosomes that carry genetic information and controls the cells activities
Mitochondria
Site of aerobic respiration
Plant cell parts (7)
- cell membrane
- cell wall
- cytoplasm
- nucleus
- vacuole
- chloroplast
- mitochondria
Cell wall
Contains cellulose and provides structural support
Chloroplast
Site of photosynthesis
Vacuole
Contains cell sap and helps provide structural support, keeping the cell firm
Total magnification =
Objective lens x eyepiece lens
Stain used for plant cells
Iodine
Stain used for animal cells
Methylene blue
How is a slide prepared (3)
- lay sample flat on glass slide
- use a mounted needle to lower the coverslip
- angle light under the slide
Advantages of light microscope (2)
- Images can be seen in colour
- they can look at living and dead tissue
Disadvantages of light microscope (2)
- maximum magnification is x1000
- tissue has to be stained
Advantage of electron microscopes
- can magnify tissue up to x 1 million
Disadvantages of electron microscopes (2)
- images only seen in black and white
- only observe dead tissue
How many micrometers are in a mm
1000