Active Transport Movement of molecules up the concentration gradient.Movement of molecules up the...

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Active Transport • Movement of molecules up the concentration gradient. Requires energy •Carrier proteins can also serve as “pumps” during active transport.

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ExocytosisExocytosis EndocytosisEndocytosis PinocytosisPinocytosis PhagocytosisPhagocytosis

Transcript of Active Transport Movement of molecules up the concentration gradient.Movement of molecules up the...

Page 1: Active Transport Movement of molecules up the concentration gradient.Movement of molecules up the concentration gradient. Requires energy Requires energy.

Active Transport •Movement of molecules up the

concentration gradient.•Requires energy•Carrier proteins can also serve as

“pumps” during active transport.

Page 2: Active Transport Movement of molecules up the concentration gradient.Movement of molecules up the concentration gradient. Requires energy Requires energy.

•The membrane proteins are very specific. One protein that moves glucose will not move calcium.

• Sodium Potassium Pump – works to maintain a higher concentration of sodium (Na) ions inside the cell and a higher concentration of postassium (K) ions outside the cell. • Requires energy to do so.• Creates and electrical gradient across the

cell membrane which is essential for nerve impulses.

Page 3: Active Transport Movement of molecules up the concentration gradient.Movement of molecules up the concentration gradient. Requires energy Requires energy.

•Exocytosis•Endocytosis•Pinocytosis•Phagocytosis