Paper 2 (H) MS - PMT Predicted Paper 2025 - AQA Biology GCSE Questions and answers with 100% accuracy(Verified by professors)

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Paper 2 (H) MS - PMT Predicted Paper
2025 - AQA Biology GCSE Questions
and answers with 100%
accuracy(Verified by professors)




PMT Education
GCSE

, BIOLOGY

8461/2H
Paper 2 Higher Tier


Mark scheme
Predicted Paper 2025 (Based on AQA)

, https://bit.ly/pmt-25 3


1.1 The human endocrine system is a collection of glands that

produce and release hormones directly into the bloodstream.

What are hormones?

[2 marks]
Chemical messengers - 1 mark
Produced by glands - 1 mark
Transported in the bloodstream to target organs - 1 mark




1.2
Hormones play a vital role in maintaining homeostasis.
Define the term homeostasis.
[2 marks]
Homeostasis is the regulation of internal conditions - 1 mark
Maintains a stable internal environment despite external changes - 1
mark




1.3 Hypoglycaemia and hyperglycaemia are conditions where blood
sugar concentration may be too low or too high in an individual.

Explain how hormones would react to both conditions.
[3 marks]

Hypoglycaemia: Low blood sugar stimulates the pancreas to release
glucagon, which converts glycogen into glucose - 1 mark

Hyperglycaemia: High blood sugar stimulates the pancreas to release
insulin, which helps cells absorb glucose, lowering blood sugar - 1
mark




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