all about passive transport
what is passive transport?
Passive transport is movement of molecular substances across the cell membrane. Unlike active transport it does not require ATP.
what is active transport?
movement of molecules across a cell membrane form a region of lower concentration to a region of higher concentration against the concentration gradient.
how does homeostasis tie into cell transport?
Homeostasis refers to the balance, or equilibrium, within the cell or a body.
what organelle of cells make ATP energy?
mitochondria
What allows substances to pass through?
Cell membrane
Does passive transport require ATP?
Some molecules even need an input of energy to help get them across the cell membrane. The movement of molecules across a membrane without the input of energy is known as passive transport. When energy (ATP) is needed, the movement is known as active transport.
How is active transport accomplished?
processes called endocytosis and exocytosis
what is cell transport?
Movement of substances across the cell membrane into or out of the cell.
how do cells get their energy?
cells seek their energy in the form of food molecules or sunlight.
Is the cell membrane permeable?
Yes. It only allows certain substances to pass through.
Examples of passive transport
Simple diffusion
facilitated diffusion
filtration
osmosis
three examples of active transport?
What determines whether a transport is active or passive?
does cell transport require energy?
Yes. It depends on which type of transport is being used
How is diffusion part of substances?
Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.
Does passive transport stop?
particles do not stop moving across the cell membrane.
Is osmosis a part of active transport?
What are the two types of cell transport?
Passive and active transport
how do cells release their energy
cells release the energy stored in their food molecules through a series of oxidation reactions
What substances move out of the cell?
Water, carbon dioxide, and oxygen are the main simple molecules that can pass during diffusion
Give 4 examples of diffusion in the human body
diffusion of oxygen in the lungs
diffusion of carbon dioxide from the lungs
diffusion of nutrients from the small intestines to the plasma
diffusion of oxygen from red blood cells into other cells
Why is active transport important?
what is the purpose of cell transport?
to protect internal environment, And to keep a balance of salts, nutrients, and proteins within a range to wear it can keep the cell alive.
Does active transport require ATP
Yes it is required because it moves from an area of low to high concentration.
how do the molecules move?
energy is available for movement of the molecules from a higher potential state to a lower potential state