Week 3 CTL Revision Notes
Cells Basic Overview Continued:
Structure of a Typical Cell:
• Plasma membrane
o Consists of a bi-lipid layer (diglycerides)
§ Is molten (has properties of both solid and liquid)
§ Contains Cholesterols
o Contains proteins
§ Transportation
§ Catalysis
§ Reception of chemical signals
§ Intercellular joining (2 cells bonding)
§ Cell-Cell Recognition
§ Attachment to extracellular matrix
o Membrane Specialisations:
§ Membrane Junctions (desmosomes/tight/gap)
§ Membrane Projections (microvilli/cilia/flagella)
• Cytoplasm
o Everything inside a cell bar the membrane and the nucleus.
o Includes all organelles + cytosol
• Cytosol
o The fluid found within the membrane but outside the organelles
§ Largely water with dissolved protein, salts, sugars & other solutes.
• Inclusions
o Chemical substances
§ Glycosomes
§ Glycogen granules
§ Pigment
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Cells Basic Overview Continued:
Structure of a Typical Cell:
• Plasma membrane
o Consists of a bi-lipid layer (diglycerides)
§ Is molten (has properties of both solid and liquid)
§ Contains Cholesterols
o Contains proteins
§ Transportation
§ Catalysis
§ Reception of chemical signals
§ Intercellular joining (2 cells bonding)
§ Cell-Cell Recognition
§ Attachment to extracellular matrix
o Membrane Specialisations:
§ Membrane Junctions (desmosomes/tight/gap)
§ Membrane Projections (microvilli/cilia/flagella)
• Cytoplasm
o Everything inside a cell bar the membrane and the nucleus.
o Includes all organelles + cytosol
• Cytosol
o The fluid found within the membrane but outside the organelles
§ Largely water with dissolved protein, salts, sugars & other solutes.
• Inclusions
o Chemical substances
§ Glycosomes
§ Glycogen granules
§ Pigment
www.MedStudentNotes.com
