OCR A Level Biology B (Advancing Biology)
OCR A Level Biology B (Advancing Biology) Kidney Functions and Malfunctions Exam Questions
Free OCR A Level Biology B (Advancing Biology) exam questions on Kidney Functions and Malfunctions, with mark schemes. Covers nephron structure, ultrafiltration, reabsorption, ADH, kidney failure, dialysis and transplants.
Kidney Functions and Malfunctions exam questions
1 question pack of real past exam questions with its mark scheme. Answer every question without notes, then mark your answers line by line against the mark scheme.
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A Level Biology Flashcards
Every answer is written in mark scheme wording, so you learn exactly what examiners give marks for. Pick your exam board, then test yourself with the questions on this page.
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About OCR A Level Biology B (Advancing Biology) Kidney Functions and Malfunctions
This topic covers the kidney.
What you need to know
- Nephron Glomerulus, Bowman's capsule, tubules and the loop of Henle.
- Processes Ultrafiltration and selective reabsorption.
- ADH Water balance control.
- Kidney failure Dialysis and transplants.
Common mistakes in Kidney Functions and Malfunctions
- Saying ADH dilutes urine.
- Forgetting proteins stay in the blood.
- Mixing dialysis types.
Try three Kidney Functions and Malfunctions exam-style questions
1. State where most water is reabsorbed. (1 mark)
Show the mark scheme answer
The proximal convoluted tubule.
2. Explain how dialysis removes urea. (2 marks)
Show the mark scheme answer
Blood flows next to dialysis fluid with no urea (1), so urea diffuses out through a partially permeable membrane (1).
3. Give one disadvantage of a transplant. (1 mark)
Show the mark scheme answer
Risk of rejection.
Kidney Functions and Malfunctions FAQs
What does this topic cover?
Nephron function, ADH and kidney failure.
Which practical links here?
Kidney dissection.
Why is countercurrent flow used in dialysis?
It maintains a concentration gradient.
Revise this topic with flashcards: A Level Biology Flashcards, with mark scheme answers for Anki and Quizlet.
