the samples have different glucose concentrations. This interpretation earns **B1**.","highlights":[{"text":"different concentrations of glucose","location":"specification"}]}]}],"generatedAt":"2026-07-22T08:52:43.400Z","modelVersion":"gpt-5.6-terra+diagrams-1","explanationVersion":"v3"},"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"546b457c-409c-46bb-a137-8ef8b29e7203","revisionId":"6638a525-51eb-4307-b94e-e93f18bc7bd5","questionNumber":null,"questionType":"LA","specification":"","difficulty":4,"difficultyBand":"medium","totalMarks":3,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"e2fae72c-f151-45d7-ac4c-776847e7cace","label":null,"content":"During a diagnostic urological procedure, a clinical tracer is detected leaving the renal pelvis of a patient.\n\nDescribe the subsequent pathway of this tracer as it is transported and excreted from the body.","markscheme":"- Identifies that the tracer travels from the renal pelvis/kidneys through the **ureters** B1\n- States that the tracer enters and is temporarily stored in the **(urinary) bladder** B1\n- Explains that the tracer is eliminated from the body via the **urethra** B1","marks":3,"order":0,"markingRubric":null,"explanation":{"methods":[{"id":"urinary_pathway","label":"Trace the urinary pathway","steps":[{"type":"text","order":1,"title":"Follow the ureters","content":"From the renal pelvis, the tracer travels down the **ureters**. These are tubes that carry urine from each kidney towards the bladder. Naming the ureters earns the first mark.","highlights":[{"text":"renal pelvis","location":"specification"}]},{"type":"text","order":2,"title":"Enter the bladder","content":"The tracer then enters the **urinary bladder**, where it is temporarily stored with the urine. Stating that it reaches the bladder earns the second mark.","highlights":[{"text":"tracer","location":"specification"}]},{"type":"text","order":3,"title":"Leave via urethra","content":"Finally, the tracer leaves the bladder through the **urethra** and is excreted from the body in urine. Naming the urethra as the exit route earns the third mark.","highlights":[{"text":"excreted from the body","location":"specification"}]}]}],"generatedAt":"2026-07-22T08:33:16.434Z","modelVersion":"gpt-5.6-terra+diagrams-1","explanationVersion":"v3"},"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"61cb6caf-ada6-4595-9a6a-07bf2de1a19c","revisionId":"6aa8bb39-93a8-4750-ab01-e9efbda07d46","questionNumber":null,"questionType":"LA","specification":"A healthy adult volunteer participates in a nutritional trial. At 0 minutes, they ingest a carbohydrate-rich meal replacement shake. The graph in Figure 1 shows the subsequent changes in the concentration of glucose in their blood plasma over the next 120 minutes.\n\n![Figure 1: Line graph showing blood glucose concentration over 120 minutes](https://assets.mathsgenie.co.uk/aqa-qb/a2bc1421-8c39-4d02-bdff-cd2263555fb5.png)","difficulty":5,"difficultyBand":"medium","totalMarks":2,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"baf9a6a7-7211-44ac-a2b7-c69a3f4f135b","label":null,"content":"Explain why the concentration of glucose in the blood plasma decreases between 30 minutes and 75 minutes.","markscheme":"- State that the increased blood glucose concentration is detected by the pancreas (or beta cells in the islets of Langerhans), which secretes/releases the hormone **insulin** into the bloodstream. M1\n- Explain that insulin increases the permeability of body cells to glucose (causing glucose to move from the blood into cells) OR activates enzymes that convert glucose into insoluble **glycogen** (glycogenesis) in the liver or muscle cells. A1","marks":2,"order":0,"markingRubric":null,"explanation":{"methods":[{"id":"insulin_control","label":"Insulin control of glucose","steps":[{"type":"text","order":2,"title":"Release insulin","content":"The pancreas detects the increased blood glucose concentration and releases **insulin** i

Blood glucose control, diabetes and the urinary system

Question 15

Blood glucose control, diabetes and the urinary system Questions

Blood glucose control, diabetes and the urinary system

Question 15

Blood glucose control, diabetes and the urinary system Questions