12514964
Beschreibung
Mindmap von eleanor croker, aktualisiert more than 1 year ago
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Erstellt von eleanor croker
vor fast 7 Jahre
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B1 - Cell Structure and Transport
- Microscopes
- Magnification = Image size
÷ Real object size
- Light
- Can magnify
up to x2'000
- Developed mid 17th Century
- Uses a beam of light to
form a bigger (magnified)
picture of the object
- Relatively cheap, can be used almost
anywhere and works on live specimen.
- Can magnify
up to x2'000
- Electron
- Invented in the 1930s
- Can magnify up to x2'000'000
- Uses a beam of electrons to
form a bigger (magnified)
picture of the object
- Can only be used in
specific temperatures,
humidities & pressures
- Transmission electron
microscopes give 2D images with
high magnification and resolution
- Scanning electron microscopes
give 3D images but have lower
magnification and resolution.
- Very large and expensive
- Invented in the 1930s
- Magnification = Image size
÷ Real object size
- Eukaryotic Cells
- Animal
- Nucleus
- Nucleus
- Plants
- Animal
- Prokaryotic Cells
- Bacteria
- ....
- Bacteria
- Specialisation in Cells
- Animals
- Nerve Cells
- Lots of dendrites so can connect to other nerve cells, a huge axon
that can carry the impulses, and synapses adapted to pass impulses
with chemicals and contain lots of mitochondria for energy.
- Lots of dendrites so can connect to other nerve cells, a huge axon
that can carry the impulses, and synapses adapted to pass impulses
with chemicals and contain lots of mitochondria for energy.
- Sperm Cells
- Long flagellum, streamlined head with large nucleus and lots of
mitochondria and digestive enzymes in the head give the sperm
more chance of getting to the egg and passing on the genetics.
- Long flagellum, streamlined head with large nucleus and lots of
mitochondria and digestive enzymes in the head give the sperm
more chance of getting to the egg and passing on the genetics.
- Muscle Cells
- Contain special proteins, many mitochondria and store glycogen.
This means they can contract and relax, allowing us to move.
- Contain special proteins, many mitochondria and store glycogen.
This means they can contract and relax, allowing us to move.
- Nerve Cells
- Plants
- Root Hair Cells
- Larger surface area, large permanent vacuole and
lots of mitochondria to speed up intake of water.
- Larger surface area, large permanent vacuole and
lots of mitochondria to speed up intake of water.
- Photosynthetic Cells
- Contains chloroplast and chlorophyll, positioned in continuous
layers, and have a large permanent vacuole so they can absorb
more light and photosynthesis can happen more efficiently.
- Contains chloroplast and chlorophyll, positioned in continuous
layers, and have a large permanent vacuole so they can absorb
more light and photosynthesis can happen more efficiently.
- Xylem Cells
- ...
- ...
- Phloem Cells
- Cell walls between cells, and the internal structure breaks down.
Companion cells with mitochondria give them energy and keep them
alive. The open tube makes it easier for the water and minerals to travel.
- Cell walls between cells, and the internal structure breaks down.
Companion cells with mitochondria give them energy and keep them
alive. The open tube makes it easier for the water and minerals to travel.
- Root Hair Cells
- Cells specialise to ...
- Animals
- Exchanging Materials
- Osmosis
- In Animals
- In Plants
- In Animals
- Diffusion
- Active Transport
- Surface area to
volume ratio
- Osmosis
- Units of measuement
- 1km = 1000m
- 1m = 100cm
- 1cm = 10mm
- 1mm = 1000μm
- 1μm = 1000nm
- 1km = 1000m
Medienanhänge
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