1 Core concepts in biology

Practice questions on Core concepts in biology

• Explain how the structure of an enzyme allows it to carry out its function, and describe w… (5 marks, Explain)
• Meiosis and mitosis are both types of cell division that occur in the human body. Compare … (5 marks, Compare)
• The cell membrane is described as a selectively permeable barrier. Explain how the cell me… (5 marks, Explain)
• A student places a piece of potato tissue into a concentrated sugar solution and leaves it… (5 marks, Explain)
• Proteins are made from chains of amino acids. A student tests two food samples for the pre… (5 marks, Explain)
• Explain how the cell membrane controls the movement of substances into and out of a cell. … (5 marks, Explain)
• Catalase is an enzyme found in liver cells that breaks down hydrogen peroxide into water a… (5 marks, Explain)
• Explain how a change in pH above and below the optimum affects the action of an enzyme. (5 marks, Explain)
• During the cell cycle, DNA replication occurs in the nucleus before a cell can divide. Exp… (5 marks, Explain)
• Explain how increasing temperature affects the rate of an enzyme-controlled reaction, both… (5 marks, Explain)
• Describe the roles of mitosis and cell differentiation in the growth and development of a … (5 marks, Describe)
• Proteases and lipases are enzymes found in the digestive system. Explain how the structure… (5 marks, Explain)
• Explain why prokaryotic cells, such as bacteria, are different from eukaryotic cells in te… (5 marks, Explain)
• Stem cells can be used in medicine to treat a range of diseases. Explain the benefits and … (5 marks, Explain)
• DNA is a polymer that forms a double helix structure. Describe the structure of DNA and ex… (5 marks, Describe and Explain)
• Meiosis and mitosis are both types of cell division. Compare meiosis and mitosis in terms … (5 marks, Compare)
• Explain how a change in pH away from the optimum affects the ability of an enzyme to break… (5 marks, Explain)
• Stem cells can be used in medicine to treat a range of diseases. Evaluate the use of embry… (5 marks, Evaluate)
• Cancer can develop when cells undergo uncontrolled growth and division. Explain how a muta… (5 marks, Explain)
• A student investigating cell division found that cells in the meristems of plant roots div… (5 marks, Explain)