SB6c: Absorbing Water And Mineral Ions Keywords

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). This process requires energy.

Question 2

Concentration gradient

Answer 2

The difference between two concentrations.

Question 3

Diffusion

Answer 3

The random movement and spreading of particles. There is a net (overall) diffusion of particles from regions of higher concentration to regions of lower concentration.

Question 4

Fluid

Answer 4

A liquid or a gas.

Question 5

Mineral ion

Answer 5

Ion from a naturally occurring salt.

Question 6

Nitrate

Answer 6

A compound that contains nitrogen in the form of a nitrate ion.

Question 7

Osmosis

Answer 7

The overall movement of solvent molecules in a solution across a partially permeable membrane, from a dilute solution to a more concentrated one.

Question 8

Partially permeable membrane

Answer 8

Describes a membrane that will allow certain particles to pass through it but not others. Another term for semi-permeable membrane.

Question 9

Protein

Answer 9

A polymer made up of amino acids.

Question 10

Root hair cell

Answer 10

A cell found on the surface of plant roots that has a large surface area to absorb water and dissolved mineral salts quickly from the soil.

Question 11

Wilt

Answer 11

Drooping of parts of a plant caused by a lack of water.