B1.2 Animal and Plant cells

Question 1

What is the purpose of the nucleus?

Answer 1

➢ To control all the activities of the cell and is surrounded by the nuclear membrane
➢ It contains the genes on the chromosomes that carry the instructions for making the proteins needed to build new cells or new organisms

Question 2

What is the purpose of the cytoplasm?

Answer 2

➢ A liquid gel in which the organelle are suspended and where most of the chemical reactions needed for life take place

Question 3

What is the purpose of the cell membrane?

Answer 3

➢ Controls the passage of substances such as glucose and mineral ions into the cell
➢ Controls the movement of substances such as urea or hormones out of the cell

Question 4

What is the purpose of the mitochondria?

Answer 4

➢ Responsible for releasing energy for the cell

➢ Also where aerobic respiration takes place

Question 5

What is the purpose of the ribosomes?

Answer 5

Where protein synthesis takes place - making all the proteins needed in the cell

Question 6

What are plant cell walls made up of?

Answer 6

Cellulose that strengthens the cell and gives it support

Question 7

What are chloroplasts?

Answer 7

Are green parts of the plant - they are green because they contain the green substance chlorophyll

Question 8

What is permanent vacuole?

Answer 8

Space in the cytoplasm filled with cell sap - helps keep the cells rigid to support the plant