B1 Flashcards
How much can a light microscope magnify up to
2000x
How much can an electron microscope magnify up to
2,000,000 x
Give an advantage of a light microscope
Relatively cheap and easy to carry around
Give a disadvantage of an electron microscope
Expensive and can’t be used for living things
What are the 2 different types of electron microscope
Transmission ( 2D )
Scanning ( 3D )
What is the equation for magnification
Image size
—————
Object size
What is resolving power
The ability to see 2 points as two points rather than 1 merged
How big are animal cells
10um - 30um
What are the structures of an animal cell
Nucleus
Cytoplasm
Cell membrane
Mitochondria
Ribosomes
What structures do plant cells have that animal cells do not
Cell wall and celulose
Chloroplast
Vacuole
What is cytoplasm
A gel in which the organelles are suspended and where chemical reactions take place
What is the cell membrane
Controls the movement of substances such as glucose in and out of the cell
What is mitochondria
Where energy is transferred for aerobic respiration
What are ribosomes
Where protein synthesis takes place
What are chloroplasts
Contain chlorophyll for photosynthesis
What is a eukaryotic cell
A cell that contains a cell membrane cytoplasm and a nucleus.
What is a prokaryotic cell
Consists of cytoplasm and a cell wall.
Give an example of a prokaryotic cell
Bacteria cell
What else do some guys prokaryotic cells have
Plasmids and flagella
What are the 3 specialised cells in animals
Nerve cells
Muscle cells
Speem cells
