Active transport: Here the molecules are moved against their gradient (concentration or electrochemical). Hence energy is required by the cells by hydrolysis of ATP. The transport is driven by an ion gradient. Eg: Na+/K+ ATPase pump. (3 Na+ molecules are moved out of the cell and 2 molecules of K+ are moved in ). Facilitated diffusion:molecules moved dowm concentration gradient, passing throuigh a membrane via a specific carrier molecule.This is a passive process requiring no energy. Glucose is transported across membrane in this way. Indirect/secondary active transport: Multiple molecules are moved across the membrane, with uphill movement of one molecule and downhill movement of other. Eg: Na+/glucose symport Simple diffusion:Molecules , which are small and non-polar are moved from higher concentration to the region of lower concentration.Transportation of water across the membrane is done through simple diffusion. Solution Active transport: Here the molecules are moved against their gradient (concentration or electrochemical). Hence energy is required by the cells by hydrolysis of ATP. The transport is driven by an ion gradient. Eg: Na+/K+ ATPase pump. (3 Na+ molecules are moved out of the cell and 2 molecules of K+ are moved in ). Facilitated diffusion:molecules moved dowm concentration gradient, passing throuigh a membrane via a specific carrier molecule.This is a passive process requiring no energy. Glucose is transported across membrane in this way. Indirect/secondary active transport: Multiple molecules are moved across the membrane, with uphill movement of one molecule and downhill movement of other. Eg: Na+/glucose symport Simple diffusion:Molecules , which are small and non-polar are moved from higher concentration to the region of lower concentration.Transportation of water across the membrane is done through simple diffusion..

1. Active transport: Here the molecules are moved against their gradient (concentration or
electrochemical). Hence energy is required by the cells by hydrolysis of ATP. The transport is
driven by an ion gradient. Eg: Na+/K+ ATPase pump. (3 Na+ molecules are moved out of the
cell and 2 molecules of K+ are moved in ).
Facilitated diffusion:molecules moved dowm concentration gradient, passing throuigh a
membrane via a specific carrier molecule.This is a passive process requiring no energy. Glucose
is transported across membrane in this way.
Indirect/secondary active transport: Multiple molecules are moved across the membrane, with
uphill movement of one molecule and downhill movement of other. Eg: Na+/glucose symport
Simple diffusion:Molecules , which are small and non-polar are moved from higher
concentration to the region of lower concentration.Transportation of water across the membrane
is done through simple diffusion.
Solution
Active transport: Here the molecules are moved against their gradient (concentration or
electrochemical). Hence energy is required by the cells by hydrolysis of ATP. The transport is
driven by an ion gradient. Eg: Na+/K+ ATPase pump. (3 Na+ molecules are moved out of the
cell and 2 molecules of K+ are moved in ).
Facilitated diffusion:molecules moved dowm concentration gradient, passing throuigh a
membrane via a specific carrier molecule.This is a passive process requiring no energy. Glucose
is transported across membrane in this way.
Indirect/secondary active transport: Multiple molecules are moved across the membrane, with
uphill movement of one molecule and downhill movement of other. Eg: Na+/glucose symport
Simple diffusion:Molecules , which are small and non-polar are moved from higher
concentration to the region of lower concentration.Transportation of water across the membrane
is done through simple diffusion.