AQA GCSE Biology Paper 1 Topics 1-4

AQA GCSE Biology Paper 1 Topics 1-4 Name the main organelles in an animal cell: ️ nucleus cytoplasm cell membrane ribosomes mitochondria What organelles does a plant cell have but animal cell doesn't? ️ chloroplast cell wall vacuole What organelles does a Bacteria cell have? ️ no nucleus circular strand of DNA rings of plasmid cell wall cell membrane What is a eukaryotic cell? ️A cell that contains a nucleus Give an example of a eukaryotic cell: ️ Animal cell Plant cell What is a prokaryotic cell? ️Single cells of bacteria that has its DNA in a loop not inclosed in a nucleus Give an example of a prokaryotic cell: ️ Bacteria Archaeans What is the function of a chloroplast? (plant cell only) ️ photosynthesis contain chlorophyll which absorbs light needed for photosynthesis What is the function of cell wall? (plant cell only) ️supports the cell - strengthens it What us the function of a vacuole? (plant cell only) ️ contains cell sap - helps to make the cell RIGID weak solution of sugars and salts What is the function of a nucleus? ️ contains DNA controls the cell What is the function of mitochondria? ️ aerobic respiration respiration transfers energy that the cell needs to work What is the function of ribosomes? ️ proteins are made here What is the function of cell membrane? ️ controls what goes in and out holds the cell together What is the function of cytoplasm? ️ chemical reaction take place here contains enzymes What is the function of a plasmid? ️They are involved in the genetic exchange What is cell differentiation? ️The process in which cells change to become specialised to its job. What are the types of specialised cells? (6) ️ sperm cell nerve cell muscle cell root hair cell xylem cell phloem cell What is the function of the sperm cell? and what is it specialised for? ️To get male DNA to the female DNA specialised for reproduction How is sperm cell specialised for its job? ️ long tail + streamlined head for sw