topic 2 - cells and their organisation Flashcards
levels of organisation in organisms
- organelles
- cells
- tissues
- organs
- systems
what are the cell structures in an animal cell?
- nucleus
- cytoplasm
- cell membrane
- mitochondria
- ribosomes
what are the cell structures in a plant cell?
- nucleus
- cytoplasm
- cell wall
- cell membrane
- mitochondria
- ribosomes
- chloroplasts
- large permanent vacuole
what is the function of the nucleus?
to store DNA. it is the cell’s control centre
what is the function of the cytoplasm?
where all the chemical reactions in the cell take place
what is the function of the cell wall?
to keep the cell stable. it helps protect the internal contents of the cell.
what is the function of the cell membrane?
regulates the movement of substances in and out of the cells
what is the function of the mitochondria?
where energy synthesis occurs
what is the function of the ribosomes?
the site of protein synthesis
what is the function of the chloroplasts?
the site of photosynthesis for a plant
what is the function of the vacuole?
to store waste, food and water for a cell. it also provides structure for it.
