AQA A-level BIOLOGY (7402/1) Paper 1 Mark SCHEME

AQA A-level BIOLOGY (7402/1) Paper 1 Mark scheme Describe eukaryotic cells - CAPITAL LETTERS They are complex cells and include all animal and plant cells, as well as all algae and fungi cells. What does it mean if a organism is eukaryotic? - CAPITAL LETTERS It is a multi-cellular organism that is made up of eukaryotic cells. What is an organelle? - CAPITAL LETTERS A part of a cell that plays a specific role. Name the organelles you might find in an animal cell - CAPITAL LETTERS 1)Plasma cell surface membrane 2)Rough/smooth endoplasmic reticulum 3)nucleus (nucleolus) 4)lysosome 5)ribosome 6)Golgi apparatus 7)cytoplasm 8)mitochondrion Name the organelles you might find in a plant cell - CAPITAL LETTERS 1)Plasma cell surface membrane 2)cellulose wall 3)chloroplast 4)rough/smooth endoplasmic reticulum 5)mitochondrion 6)Golgi apparatus 7)vacuole 8)cytoplasm 9)nucleus 10) ribosome How are algal cells similar to plant cells? - CAPITAL LETTERS They have the same organelles. How are fungal cells different to plant cells? - CAPITAL LETTERS Their cell walls are made of chitin, not cellulose. They don't have chloroplasts because they don't need to photosynthesise Describe the cell surface plasma membrane. Outline the functions. - CAPITAL LETTERS It is found on the inside of cells that also have a cell wall (plants), and is mainly made up of lipids and proteins. It controls the movement of substances in and out of the cell. It also has receptor molecules on it, to allow it to respond to chemicals like hormones. Name the components of the nucleus - CAPITAL LETTERS 1)nucleolus 2)nuclear envelope 3)nucleoplasm 4)nuclear pores 5)chromatin