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GCSE Biology · key term
The amount of glucose in a given volume of blood.
Used by AQA, Edexcel and OCR
Specification 4.5.3.2 · Paper 2
The amount of glucose dissolved in a given volume of blood.
Revise: Blood Glucose ControlBlood glucose concentration can rise after eating carbohydrates and fall as cells use glucose, including during exercise. The pancreas monitors this concentration and releases hormones into the blood to help control it.
Specification 7.13, 7.14, 7.15, 7.16 · Paper 2
Write a linked sequence: raised blood glucose concentration → pancreas secretes insulin → greater glucose uptake and storage → blood glucose concentration falls.
Write the sequence in causal order: low blood glucose concentration → pancreas secretes glucagon → glucagon travels in the blood to the liver → glycogen is converted into glucose → glucose enters the blood → blood glucose concentration rises.
For the cause, link the steps clearly: the immune system destroys pancreatic beta cells → little or no insulin is produced → blood glucose concentration cannot be controlled normally.
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When it detects that blood glucose concentration is too high, it secretes the hormone insulin into the blood. The blood carries insulin to its target cells; insulin is the message that causes those cells to change their activity.
The concentration of the soluble sugar glucose in the blood; glucose is delivered to cells and used in respiration.
The amount of glucose present in a given volume of blood.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
The concentration of dissolved glucose in the blood.
Revise: InsulinThe brain and other body cells therefore need a dependable supply, but allowing the blood glucose concentration to rise too far can also disturb the conditions in which cells function.
The concentration of glucose dissolved in the blood.