CELL FUNCTIONS

Question 1

cell wall

Answer 1

1. protects living contents inside PLANT cell
2. gives rigidity to PLANT cell

Question 2

cytoplasm

Answer 2

1. site of all metabolic processes
2. cyclosis (substances circulate)
3. stores substances
4. helps maintain shape of cell

Question 3

cell membrane

Answer 3

1. selectively permeable and controls movements of substances in and out of the cell

Question 4

nucleus

Answer 4

1. control centre
2. chromosomes carry hereditary characteristics

Question 5

mitochondria

Answer 5

1. cellular respiration

Question 6

ribosomes

Answer 6

1. site of protein synthesis (process where 51 (or more) amino acids join to form a protein)

Question 7

endoplasmic reticulum (ER)

Answer 7

1. transports substancces from one part of the cytoplasm to another
2. increases internal surface area of cell

Question 8

golgi body

Answer 8

1. producing and processing secretions
2. prepares proteins for transport to other parts of cell

Question 9

plastids- chloroplasts

Answer 9

1. photosynthesis

Question 10

plastids- chromoplasts

Answer 10

1. gives fruits and flowers red, orange and yellow colour

Question 11

plastids- leucoplasts

Answer 11

1. become specialised to store food in form of starch, lipids or proteins

Question 12

vacuoles

Answer 12

1. cell sap causes turgor pressure, giving plant rigidity
2. cell sap contains anthocyanins- give flowers and fruit blue and purple colour

Question 13

vacuoles- contractile vacuoles

Answer 13

1. osmoregulation (controls cell’s water balance)

Question 14

vacuoles- food vaccuoles

Answer 14

1. play role in digestion and storage of food

Question 15

vacuoles- vesicles

Answer 15

1. transport substances from golgi body to other parts inside and outside cell

Question 16

vacuoles- lysosomes

Answer 16

1. play role in food disgestion in unicellular animals

Question 17

centrosomes

Answer 17

1. play role in formation of spindle during mitosis