Eukaryotic Plant Cells

Question 1

Cellulose cell wall

Answer 1

• freely permeable
• contents of the cell press against the cell wall making it rigid
• also acts as defence mechanism, protecting the contents of the cell against pathogens

Question 2

Vacuole

Answer 2

• membrane lined sacs containing cell sap
• maintenance of turgidity
• membrane of vacuole is called tonoplast ( selectively permeable so small molecules can pass through but other can’t)

Question 3

Chloroplasts

Answer 3

• photosynthesis
• double membrane
• stroma -> fluid inside
• thylakoids present
• granum present
• starch is present as starch grains
• also contains DNA + ribosomes

Question 4

Define “thylakoids”

Answer 4

Flattened sacs formed from an internal network of membranes in chloroplasts.

Question 5

Granum ( grana)

Answer 5

Several thylakoids stacked together

Found in chloroplasts

Joined by membranes called “lamellae”

Contains chlorophyll pigments