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Module 1: Paso a través de membranas

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La velocidad de movimiento de sustancias a través de membranas

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Biology - The Rate of Movement of Substances Across Membranes

The Rate of Movement of Substances Across Membranes

Table 3: The rate of movement of substances across membranes

PRACTICALLY NO MOVEMENT
VERY SLOW
SLOW
FAST
VERY FAST

proteins
acids
amino acids
water
alcohol

polysaccharides
bases
glucose

chloroform

phospholipids
inorganic salts
fatty acids

benzene

sucrose
glycerol

gases: CO2, O2, N2

lactose

carbon tetrachloride

maltose

Methods of moving materials which cannot pass through the plasma membrane
are: endocytosis (pinocytosis for small particles, phagocytosis for large
particles) and exocytosis.

Movement through the cell membrane: different molecules move at
different rates

How different materials move into and out of cells

You should now be able to explain the structure and function of cellular
membranes.

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