B1.2 Animal and Plant cells Flashcards
What is the purpose of the nucleus?
➢ 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
What is the purpose of the cytoplasm?
➢ A liquid gel in which the organelle are suspended and where most of the chemical reactions needed for life take place
What is the purpose of the cell membrane?
➢ 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
What is the purpose of the mitochondria?
➢ Responsible for releasing energy for the cell
➢ Also where aerobic respiration takes place
What is the purpose of the ribosomes?
Where protein synthesis takes place - making all the proteins needed in the cell
What are plant cell walls made up of?
Cellulose that strengthens the cell and gives it support
What are chloroplasts?
Are green parts of the plant - they are green because they contain the green substance chlorophyll
What is permanent vacuole?
Space in the cytoplasm filled with cell sap - helps keep the cells rigid to support the plant
