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Transportation Systems
- It is the exchange of substances
between the cellular inside and
the cellular exterior.
- ACTIVE TRANSPORT
- Using energy
- Masses transportation
- A solute which goes against the
concentration gradient with another
solute for its concentration gradient.
- COTRANSPORT
- Na+/glucose
- Na+/glucose
- COUNTERTRANSPORT
- Na+/Ca+2
- Na+/Ca+2
- COTRANSPORT
- Carrier proteins that hydrolyze ATP
are called "pumps".
- Sodium-potassium pump
- It allows maintain concentrations of sodium
and potassium in relatively constant
intracellular and extracellular medium.
- It allows maintain concentrations of sodium
and potassium in relatively constant
intracellular and extracellular medium.
- Sodium-potassium pump
- A solute which goes against the
concentration gradient with another
solute for its concentration gradient.
- Using energy
- PASSIVE TRANSPORT
- Doesn't require energy
- DIFUSSION
- Facilitated
- The molecules are
transported through
transmembrane proteins.
- CARRIER PROTEINS
- TYPE GATE.
- SYMPORT
- ION CHANNELS
- CARRIER PROTEINS
- The molecules are
transported through
transmembrane proteins.
- Simple
- Direct passage of molecules
through the membrane pores.
- FOR EXAMPLE:
- O2, N2, CO2
- O2, N2, CO2
- It ends when concentrations
are equalized in both
compartments .
- ISOTONIC: equilibrium
- ISOTONIC: equilibrium
- FOR EXAMPLE:
- Direct passage of molecules
through the membrane pores.
- Facilitated
- OSMOSIS
- Water molecules are transported through a
membrane , from a zone of lower solute
concentration to another of higher concentration.
- The water passes through the
membrane by transmembrane
proteins.
- AQUAPORINS
- AQUAPORINS
- The cells may come into contact with
solutions of different concentrations
- HYPOTONIC
- HYPERTONIC
- HYPOTONIC
- The water passes through the
membrane by transmembrane
proteins.
- Water molecules are transported through a
membrane , from a zone of lower solute
concentration to another of higher concentration.
- Doesn't require energy
- ACTIVE TRANSPORT
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