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334237
Cells 1.1.1
Description
Still yet to be completed. AS Biology, OCR. Module 1.1.1
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as biology
biology
biology
Mind Map by
jasukana
, updated more than 1 year ago
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Created by
jasukana
almost 11 years ago
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Resource summary
Cells 1.1.1
Microscopy
Light Microscope
Resolution
200nm
Magnification
x1500
Staining
Possible
Annotations:
Not if specimen is alive
simple colour stain
specimen alive
Inexpesive
Resolution
'The degree to which it is possible to distinguish between two objects very close together' (Higher resolution = Greater detail)
Magnification
'The degree to which a size of an image is larger than the object itself'
Magnification= image size/object size
Electron microscopes
Transmission Electron Microscope (TEM)
Resolution
0.2nm
Magnification
x500 000
Staining
Fixed/stained
Specimen dead
Scanning Electron Microscope (SEM)
Resolution
0.2nm
Magnification
x100 000 + 3D Images
Staining
Metal coated
Reflect electrons
Specimen dead
Expensive
~Be able to recognise and describe drawing and photographs of cell structures...This takes practise!!~
Organelles
Nucleus
Largest organelle
Contains Chromatin
Consists of DNA and proteins
Instructions for making proteins
Surrounded by double membrane nuclear envelope
with nuclear pores
Nucleolus
very dense
Makes RNA and ribosomes
Endoplasmic recticulum (ER)
Rough
Covered in Ribosomes
Smooth
Lipid processing
Flattened membrane sac
Golgi Apparatus
Receives proteins from ER
Modifies proteins
Packaged into Vesicles
Transported to cell surface to be secreted.
Also releases lysosomes
Mitochondria
Aerobic Respiration
inner membrane folds in
Cristae
Matrix
Lysosome
Enter text here
Plasma Membrane
PARTIALLY PERMIABLE
controls movement of substances in and out of cell
Phospholipid bilayer
Chloroplasts
Found in plant cells
Where photosynthesis takes place
Cytoskeleton
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