All of AQA GCSE Biology (9-1) - Paper 1 Questions and Answers

All of AQA GCSE Biology (9-1) - Paper 1 Questions and Answers What are the two types of microscopes? - Answer️️ -Light Microscope Electron Microscope What is the magnifying power of a light microscope? - Answer️️ -x 2,000 What is the magnifying power of an electron microscope? - Answer️️ -x 2,000,000 What is the resolving power? - Answer️️ -The ability to distinguish between two separate points What is the resolving power of light microscopes? - Answer️️ -200 nm What is the resolving power of electron microscopes? - Answer️️ -0.2 nm What are the advantages of light microscopes? - Answer️️ -1. living samples 2. can view samples in colour What are the disadvantages of electron microscopes? - Answer️️ -1. dead samples 2. samples in black and white What can they do with electron microscopes to make them coloured? - Answer️️ -Dye them or colour them in How do you work out magnification? - Answer️️ -Image size / Object size How do you work out image size? - Answer️️ -Magnification x Object size How do you work out object size? - Answer️️ -Image size / Magnification How do you convert cm to mm? - Answer️️ -x 10 How do you convert um (micrometres) to mm? - Answer️️ -/ 1000 How do you convert mm to um (micrometres)? - Answer️️ -x 1000 What does an animal cell contain? - Answer️️ -Cytoplasm, Nucleus, Ribosomes, Mitochondrion, Cell Membrane Where is the nucleus located in an animal cell? - Answer️️ -The centre What does the nucleus do? - Answer️️ -It controls the activities of the cell What is the role of the cytoplasm? - Answer️️ -Where chemical reactions take place Does an animal cell have a cell wall? - Answer️️ -No, it does not What is the role of the cell membrane? - Answer️️ -Controls the ENTRY and EXIT of SUBSTANCES inside the cell What is the role of mitochondria/on? - Answer️️ -Creates energy by aerobic respiration What does aerobic respiration mean? - Answer️️ -It requires oxygen What is the role of ribosomes? - Answer️️ -Where protein synthesis takes place What kind of shape is a plant cell? - Answer️️ -Rectangular What kind of shape is an animal cell? - Answer️️ -Circular What does a plant cell contain? - Answer️️ -Chloroplast Starch grain Cell Membrane Cell Wall Nucleus Mitochondrion Cytoplasm What is the role of the cell wall? - Answer️️ -Supports and protects the cell What is the role of the vacuole? - Answer️️ -contains cell sap Why is a plant cell rectangular? - Answer️️ -Due to the cell wall - strong Where is the nucleus placed in a plant cell? - Answer️️ -In one corner/side What is the role of chloroplasts? - Answer️️ -Full of a pigment called chlorophyll This is where photosynthesis takes place What are bacteria responsible for? - Answer️️ -Diseases such as tuberculosis, cholera. What does a bacterial cell contain? - Answer️️ -Pilli Plasmid Ribosomes Cytoplasm Plasma membrane Cell wall Capsule Bacterial Flagellum Nucleoid - circular DNA What is the purpose of a flagella to a bacterial cell? - Answer️️ -Helps it to move What is the crucial thing about a bacterial cell? - Answer️️ -There is no d