B1

Question 1

Osmosis

Answer 1

The net diffusion of water from dilute solution to concentrated across partially permeable membrane.

Question 2

Isotonic

Answer 2

If the concentration of solution outside cell is same as the concentration inside cell.

Question 3

Hypertonic

Answer 3

If the concentration of solution is higher than the concentration inside the cell

Question 4

Hypotonic

Answer 4

If the concentration of the solution is lower than the concentration inside the cell.

Question 5

Concentrated solution

Answer 5

A solution that has a higher amount of solute to solvent.

Question 6

Dilute solution

Answer 6

A solution that has a higher amount of higher amount of solvent to solute.

Question 7

Crenation

Answer 7

When animal cells are placed in a concentrated solution, lose water and shrivel.

Question 8

Lysis

Answer 8

When animal cells are placed in a dilute solution, take in water and burst.

Question 9

Active transport

Answer 9

When particles move from a low concentration to a high concentration across a partially permeable membrane. This requires energy.

Question 10

Plants active transport

Answer 10

Mineral ions in soil are dilute and is more dilute within the plant root hair cells but active transport absorbs the minerals in.

Question 11

How does diffusion differ to active transport?

Answer 11

Active transport goes up the concentration gradient whereas diffusion goes down.

Question 12

Aveoli

Answer 12

When air is moved into and out of the lungs ventilating millions of tiny air sacs.

Question 13

Stomata

Answer 13

Provides a large surface area to flat thin leaves to maintain a steep concentration gradient.

Question 14

SA:V

Answer 14

Having a larger surface area to volume makes exchanging material easier because there is more space in which materials can enter.