Aqa Gcse Combined Science Trilogy : Biology Paper 1 Exam Questions (319 Terms) With Verified Definitions Updated 2024

What is the test for lipids? {Ans: 1) Prepare a sample of the food you're testing, transfer about 5cm^3 into a test tube 2) Using a pipette to add 3 drops of Sudan III stain solution to the test tube and gently shake the tube 3) Sudan III stain solution stains lipids. If the sample contains lipids, the mixture will separate out into two layers. The top layer will be bright red. If no lipids are present, no separate layer will form at the top of the liquid}What can measles sometimes lead to? {Ans: Pneumonia or a brain infection called encephalitis}What gas diffuses out of the blood? {Ans: Carbon dioxide}What is the issue with using penicillin to treat gonorrhoea? {Ans: The bacteria is starting to get an antibiotic resistance towards the antibiotic}What is mitosis? {Ans: Part of the cell cycle where one set of new chromosomes is pulled to each end of the cell forming two identical nuclei during cell division}What is cell specialisation? {Ans: The process of cells as they develop depending on their location in a tissue or organ.}