Diffusion
What is the diffusion of water called
What is Osmosis
What is passive transport?
Movement of substances across a cell membrane without using energy.
What is active transport?
Active transport is the movement of molecules across a cell membrane using energy, usually against their concentration gradient.
What is osmosis?
Osmosis is the diffusion of water molecules through a partially permeable membrane, from a region of high water concentration to a region of low water concentration.
What type of transport moves substances with the concentration gradient?
Passive transport
What type of diffusion requires transport proteins
What is Facilitated diffusion
How is passive transport different from active transport?
Passive transport does not require energy; active transport does.
What energy source does active transport use?
It uses energy from ATP
Is osmosis active or passive?
Osmosis is a passive process — it does not require energy.
Does diffusion need energy?
no, its passive
What is diffusion?
Diffusion is the movement of particles from an area of high concentration to an area of low concentration.
Does passive transport require energy from the cell? Why or why not?
No, because substances move from high to low concentration naturally.
How is active transport different from passive transport?
Active transport requires energy and moves substances against their gradient, while passive transport does not use energy and moves substances down their gradient.
What kind of membrane is needed for osmosis?
A partially (or selectively) permeable membrane, which lets water pass through but not larger solutes.
Which direction does water move in osmosis?
From high water concentration to low water concentration.
Where does diffusion happen in the body?
Diffusion happens in places like the lungs, where oxygen moves into the blood and carbon dioxide moves out.
What are the main types of passive transport?
Diffusion, osmosis, and facilitated diffusion.
What types of proteins are involved in active transport?
Carrier proteins or pumps, such as the sodium-potassium pump, are involved in active transport.
What happens to an animal cell in pure water?
Water enters the cell by osmosis, and the cell may swell and burst.
What does "concentration gradient" mean?
The difference in concentration between two areas
does Facilitated diffusion require energy
What is No
What is osmosis?
The diffusion of water across a selectively permeable membrane.
Why is active transport important for cells?
It helps cells maintain proper internal conditions by controlling the concentration of ions and molecules inside and outside the cell.
Why is osmosis important in living organisms?
Osmosis helps regulate water balance in cells, keeping them hydrated and functioning properly — for example, in root cells absorbing water from soil.
yes or no: when molecules go from low to high does that require energy.
yes