Types of Transport
The movement of a substance requiring energy is known as what?
Active transport
Osmosis is known as the diffusion of what?
Water
True or False? ATP (energy) is required for diffusion to happen
False - diffusion is a type of passive transport
If a cell is placed in a solution and it loses water, it is in what type of solution a. hypertonic b. hypotonic c. isotonic
Hypertonic
True of False: Because plant cells have cell walls, osmosis cannot take place.
False
The movement of a substance NOT requiring the use of energy is known as
Passive transport
If the area outside the cell has more salt, than the water will be sucked ______ _______ ___ ____
out of the cell
True or False: In diffusion, solutes move from an are of high concentration to an area of low
True
If a cell is placed in a solution and it takes in water from the solution, what type of solution is it in a. Hypertonic b. Hypotonic c. Isotonic
Hypotonic
The cell membrane is _______________ ________________ which means it allows some things to pass through it but not others.
Selectively, partially, differentially or semi-permeable
Osmosis and diffusion are both what type of transport
Passive transport
If there is 30% water inside a cell and and 20% solute outside the cell, which way will the water flow?
It will flow into the cell
Explain why osmosis and diffusion are important in the human body. Give 3 examples.
Enables food, water, and oxygen into cells. Allows waste to leave the cell.
If the cell is hypotonic what can happen to it eventually
It will burst and die
What is the head? and what is the tail? (of the bilayer)
Head is water loving (hydrophilic) Tail is water repelling (hydrophobic)
Molecules that are small, like glucose and iodine could pass through the cell membrane by __________ transport because they were moving from an area of ____________ concentration to an area of _________ concentration
passive, High to low
If there is 10% sugar inside a cell and 10% sugar outside the cell, which way will the WATER move?
Either way because it's already reached equilibrium.
What is the difference between osmosis and diffusion
Osmosis occurs only with water molecules, diffusion can occur in liquids and gases. Osmosis goes wherever more salt is and diffusion always goes from high to low.
What is it called when there are equal parts going in and out of the cell
Isotonic
Where does the energy (ATP) for active transport come from within the cell?
The mitochondria
Active Transport, requires the cell to use ____________ to move substances from a ______ concentration to a _______ concentration.
energy, Low to high
What would happen if a doctor or nurse put pure water in your I.V. (for hydration)?
Your red cells would swell and maybe burst making you very sick.
Does the solute move inside or outside the cell. intracellular fluid (5% salt) extracellular fluid (10% salt)
inside the cell
Solvent = water
solute = salt
solution = salt water
What is facilitated diffusion?
Helper proteins move things across the membrane.