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B1 Cell Structure and Transport - Coggle Diagram
B1 Cell Structure and Transport
Specialised Cells
Muscle cells
Nerve cells
Red blood cells
Root hair cells
Sperm cells
Palisade cells
Prokaryotic Cells
Bacteria
Single celled
No nucleus- single loop of DNA
Small rings of DNA called plasmids
Smaller than eukaryotic
Diffusion
Particles move down concentration gradient
High concentration to low concentration
No energy required- passive process
Microscopes
Electron microscopes
Uses a beam of electrons to form images
Samples cannot be living
Expensive
High magnification/resolution
Light microscopes
Cheap
Low magnification/resolution
Living samples can be viewed
Uses light to form images
Magnification = image size '/, actual size
Eukaryotic Cells
Animal/plant
Chromosomes
Nucleus
Osmosis
Water moves from area of lower solute concentration to higher solute concentration
No energy required- passive process
Active Transport
Particles move against concentration gradient
Low concentration to high concentration
Energy required- energy released by respiration