OCR A Level Biology A
OCR A Level Biology A Hormonal Communication Exam Questions
Free OCR A Level Biology A exam questions on Hormonal Communication, with mark schemes. Covers endocrine glands, the pancreas, blood glucose control, diabetes and the adrenal glands.
Hormonal Communication 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.
StemUp mark scheme flashcards
OCR A Level Biology A H420 Flashcards (Anki & Quizlet)
Every answer is written in mark scheme wording, so you learn exactly what examiners give marks for. Use them on Anki or Quizlet, then test yourself with the questions on this page.
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About OCR A Level Biology A Hormonal Communication
This topic covers hormones as chemical messengers.
What you need to know
- Endocrine system Glands secrete hormones into the blood.
- Adrenal glands Cortex and medulla hormones, including adrenaline.
- Blood glucose Insulin and glucagon from the islets of Langerhans.
- Diabetes Type 1 and type 2 and their treatments.
Common mistakes in Hormonal Communication
- Confusing glucagon and glycogen.
- Saying insulin is released by alpha cells.
- Mixing type 1 and type 2 causes.
Try three Hormonal Communication exam-style questions
1. Describe how insulin lowers blood glucose. (2 marks)
Show the mark scheme answer
Increases glucose uptake by cells (1) and conversion of glucose to glycogen (1).
2. Name the cells that secrete glucagon. (1 mark)
Show the mark scheme answer
Alpha cells.
3. Describe how beta cells release insulin. (2 marks)
Show the mark scheme answer
Glucose enters and is respired, raising ATP and closing K⁺ channels (1); depolarisation opens Ca²⁺ channels triggering exocytosis (1).
Hormonal Communication FAQs
What does Hormonal Communication cover?
Endocrine glands, blood glucose and diabetes.
Which practical links here?
Examining pancreatic tissue.
How is type 1 diabetes treated?
Insulin injections.
Revise this topic with flashcards: OCR A Level Biology A H420 Flashcards, with mark scheme answers for Anki and Quizlet.
