A2.2.4 - universal cell structures
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6 Terms
What are the three universal structures found in all typical cells?
DNA as genetic material
cytoplasm - made mostly of water
plasma membrane made of phospholipids
what is the central dogma of molecular biology?
the process by which genetic info flows from DNA → RNA → protein
What are the three stages of the central dogma?
replication (DNA → DNA)
transcription (DNA → RNA)
translation (RNA → protein)
why are the three structures of the cell membrane universal?
performs necessary functions for life
DNA: Information storage and transmission
Cytoplasm: Site of metabolic reactions
Plasma membrane: Boundary and regulation
what theory does the presence of universal cellular structures support?
common ancestry
what are the four functions of the plasma membrane?
Selective permeability: Regulates the passage of substances
Communication: Contains receptors for signal molecules
Structural support: Maintains cell shape
Transport: Facilitates active and passive transport
Note 
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