Transporting Substances📉

Question 1

Active transport

Answer 1

The movement of particles across a cell membrane from a region of LOWER concentration to a region of HIGHER concentration AGAINST the concentration gradient. Requires energy

Question 2

Diffusion

Answer 2

When particles spread and mix with each other without anything moving them. Diffusion into and out of cells occurs for particles that are small enough to pass through the cell surface membrane. Does not require energy.passive down concentration gradient gas and liquids.

Question 3

Concentration

Answer 3

The amount of solute dissolved in a certain volume of solvent. Meausured in g/cm3

Question 4

Concentration gradient

Answer 4

The difference between 2 concentrations. There will be an overall movement of particles down a concentration gradient from higher to lower concentration

Question 5

Osmosis

Answer 5

The overall movement of water molecules in a solution across a partially permeable membrane from a dilute solution to a more concentrated one. Down concentration gradient.

Question 6

Passive

Answer 6

A process that does not require energy is passive. Opposite if active

Question 7

Semi-permeable

Answer 7

Describes something that will allow certain particles to pass through but not others

Question 8

Solute

Answer 8

The solid that has dissolved in a liquid to make a solution.

Question 9

Solvent

Answer 9

The liquid in which a substance dissolves to make a solution.