Cell Membrane
What is a cell membrane called when it allows some substances to pass through and prevents other substances from passing through?
Semi-permeable
Is it better for cells to be larger or smaller and why?
Smaller because they can transport substances quicker
The movement of substances from an area of high concentration to an area of low concentration.
Diffusion
What is called when water moves from low solute concentration to high solute concentration?
Osmosis
What is the term for "water fearing"?
Hydrophobic
What grows faster when we increase size, volume or surface area?
volume
What type of energy causes cells to have random movement?
Thermal energy
Who did Kendrick Lamar diss during Superbowl halftime performance?
Drake
What is the term for "water loving"?
Hydrophillic
As a cell grows, what happens to the surface area to volume ratio?
The SA/V ratio decreases
What does it mean when a substance "moves down its concentration gradient"?
The substance is moving from high to low concentration
If there is more solute inside of a cell than outside, is the solution hypertonic, hypotonic, or isotonic?
If there is more solute outside of a cell than inside, is the solution hypertonic, hypotonic, or isotonic?
Hypotonic
Hypertonic
What can move across the cell membrane without assistance?
Small and hydrophobic (water, oxygen, carbon dioxide)
Why does it benefit cells to have different kinds of shapes?
To increase surface area without increasing volume
What process explains how oxygen moves from the lungs to the blood?
Diffusion
What happens to a plant in a hypertonic solution and why?
It will wilt because the water moves out of the plant roots towards the higher solute concentration.
What needs assistance (like a protein channel) to move across the cell membrane?
How does small SA/V ratio in plant roots impact nutrient uptake for a plant?
It reduces how quickly plants can transport materials as cell size increases and SA/V ration decreases.
Does the rate of diffusion increase or decrease as the size of cell increases and why?
The rate of diffusion decreases because it takes longer to transport substances in and out
What happens to a blood cell in a hypotonic solution?
It will swell and it could burst