Biology studying

Does the tail on a bilayer face inward or outward?

Inward

Does the head on a bilayer face inward or outward?

Outward

Is the head on a bilayer hydroliphic or hydrophobic?

Hydroliphic

Is the tail on the bilayer hydroliphic or hydrophobic?

Hydrophobic

Do hydrophobic tails move away from water?

Yes

What is the concentration gradient?

The difference between molecules across a ‘space’

What direction do molecules follow in the concentration gradient during diffusion?

High to low

What direction do they move during active transport?

Low to high (against the gradient)

What type of transport requires energy?

Active

Which type of transport moves against energy?

Passive transport

What happens when you put a cell into a hypertonic solution?

It will shrink

What happens when you put a cell into a hypotonic solution?

It will swell

What happens when you put a cell into an isotonic solution?

It will be neutral

What is the best environment for a cell’ homeostasis?

An isotonic solution?

What would happen if someone received an IV bag full of pure water?

They would die because their cells would burst due to too much water in their cells and it would be a hypotonic solution

What would happen to the cell if the solution had more solute than water, the cell had more water than solute and the water was moving out of the cell?

It would be a hypertonic solution and the cell would shrivel

What would happen if there was more water than solute in the solution, more solute than water in the cell and the water was moving into the cell?

The cell would swell and it would be a hypotonic solution

What would happen if there was more solute in the cell and more solute in the solution, but the water moved into the cell?

The cell would burst

What does it mean for a cell to be in equilibrium?

The concentration of solutes and water is balanced inside and outside of the cell

What PH value did water represent?

8.2

What value did vinegar represent?

6.7