Cellular Transport Flashcards
The two types of cellular transport
Passive transport and active transport
What is the principal part of the cell that is involved on cell transportation?
The cell membrane
Describe the passive transport
Requires no energy from the cell, always goes from an area of higher concentration from one of lower concentration, it’s divided by three types of passive transport
What are the three types of passive transport?
Diffusion, osmosis and facilitated diffussion
Describe the diffusion
The movement of a substance from an area of higher concentration to one of lower concentration.
The osmosis is…
The diffusion of water through a semi-permeable membrane, like the cell membrane, it involves solute and water, it has tree types of solutions.
What are hypertonic solutions?
Are those that has more solute than water
What are isotonic solutions?
In those that water and solute are in the same concentrations.
What are hypotonic solutions?
Solutions that has more water than solute.
What happened when a cell has more water than solute?
Cells swell and burst
What happened when a cell has more solute than water like salt?
The cell shrink and shrivel
Diffrence between osmosis and diffusion
The osmosis is involved in water transportation and diffusion in elements transportation.
What is facilitated diffusion?
Is the transportation of molecules and ions trough the cell membrane, it requires no energy from the cell
What is active transport?
Is the transportation of molecules or ions trough a membrane, you need ATP for the process
Types of active transport are…
Primary active transport, secondary active transport and endocytosis
In what consist the primary active transport?
Consist in use the ATP to move molecules through the membrane, it expends energy to move sodium ions out and replace them with potassium ions to maintain positive charged the cell
What is the secondary active transport?
Molecules are moved through a membrane as a result of the diffusion of another substance.
What is endocytosis?
The import of materials to the cell by foldings of the cell membrane, there are three types of endocytosis.
The three types of endocytosis are…
Phagocytosis, Pinocytosis and receptor mediated Endocytosis.
What is the Phagocytosis?
Is the process when the cell engulf solid particles like food by the cell membrane to form a food vacuole
What is pinocytosis?
Is the process when every substance found in the invagination area is brought to the cell
What is the receptor mediated endocytosis?
Is a process when cells internalize molecules and viruses involves the vesicles.
What is exocytosis?
Is the reverse of endocytosis, they produce secretion, the cell trow out proteins or secretive proteins to regulate the cell by vesicles
