Unit 1: Transport Across Cell Membranes Booklet Wordbank

Question 1

Vacuole

Answer 1

Organelle found in plant and fungal cells that contain cell sap

Question 2

Turgid

Answer 2

Condition of a plant cell which has gained water by osmosis. The cell contents appear swollen and push against the cell wall

Question 3

Concentration gradient

Answer 3

The difference in the concentration of a dissolved substance between two areas

Question 4

Diffusion

Answer 4

The movement of any substance from a region of higher concentration to lower concentration until an equal concentration is reached. This does not require energy by the cell

Question 5

Phospholipid

Answer 5

Molecule that forms a bilayer in the cell membrane

Question 6

Selectively permeable

Answer 6

Property of cell membrane which allows small soluble molecules to pass through but prevents large insoluble from crossing the membrane

Question 7

Active transport

Answer 7

The movement of a substance across a cell membrane from a lower to higher concentration. This requires use of energy by the cell

Question 8

Plasmolysed

Answer 8

Condition of a plant cell which has lost water by osmosis. The vacuole and cytoplasm will appear shrunken and the cell membrane will have pulled away from the cell wall

Question 9

Cell membrane

Answer 9

Barrier on the outside of a cell which controls what enters and exits the cell

Question 10

Osmosis

Answer 10

Movement of water from a higher concentration to a lower concentration through a selectively permeable membrane

Question 11

Passive transport

Answer 11

The movement of any substance other than water from a region of higher concentration to lower concentration until evenly spaced. This does not require energy by the cell