Active Transport, Osmosis And Diffusion Flashcards
What is active transport?
Active transport is when particles are pumped up or against the concentration gradient using energy.
What is concentration gradient?
A concentration gradient is the difference between a high and a low concentration.
What does ATP mean?
ATP energy before it has been used.
What does ADP mean?
ADP means energy after it has been used.
What is an example of active transport?
An example of active transport is how marine animals have salt gland that push the salt back into the water so that osmosis does not happen.
What is diffusion?
Diffusion is the net movement of particles from an area of higher concentration to an area of lower concentration.
Do the particles in diffusion need energy?
The particles in diffusion don’t need energy as they move on their own.
What is the goal in diffusion (as well as in Osmosis)?
The goal in diffusion, as with Osmosis, is to reach equilibrium( a state of balance).
Why is diffusion faster at hotter temperatures?
Diffusion is faster at hotter temperatures because the heat gives the particles more energy which excites them, meaning that they move faster, making the process quicker.
How does surface area have a impact on the rate of diffusion?
The larger the surface are the faster the rate of diffusion.
What is Osmosis?
Osmosis is the net movement of water across a semi-permeable membrane, from an area with a low concentration of solutes to an are with a higher concentration of solutes.
What is a semi-permeable membrane?
A semi-permeable membrane is a membrane that only lets some particles through.
In Osmosis, what is hypertonic?
Hypertonic is the side with the higher concentration of solutes in Osmosis.
In Osmosis, what is hypotonic?
Hypotonic is the side which has a lower concentration of solutes in Osmosis.
What does isotonic mean?
Isotonic means equilibrium in fluids.
