GCSE Biology: Hormones and Homeostasis

Hormonal coordination is dense with paired concepts — insulin and glucagon, type 1 and type 2 diabetes, FSH and LH — and GCSE questions are built to test whether you can keep each pair straight. This quiz works through every major pairing in the topic.

The foundations come first: homeostasis defined as maintaining a stable internal environment, and the endocrine glands correctly identified — pituitary, pancreas, thyroid — with a dedicated question on why the pituitary is called the master gland (it regulates other endocrine glands). Blood glucose control is tested in both directions: insulin released when glucose rises, promoting uptake and glycogen storage; glucagon released when glucose falls. The diabetes comparison follows with the distinction mark schemes reward — type 1 as an autoimmune failure to produce insulin, type 2 as the body's cells no longer responding to it, each with its matching treatment approach.

The menstrual cycle questions cover all four hormones by role: FSH maturing the egg follicle, LH triggering ovulation, oestrogen building the uterus lining, and progesterone maintaining it. These map directly onto the hormone-graph questions that appear on Higher tier papers. Contraception closes the reproductive section with the hormonal versus non-hormonal distinction, testing that condoms and copper IUDs sit on the non-hormonal side.

Every question is self-contained and each explanation names both halves of the relevant pairing — what the correct hormone does and what its counterpart does instead — which is exactly the comparative phrasing that turns a one-mark answer into full marks.

• Define homeostasis and identify the major endocrine glands
• Explain blood glucose control by insulin and glucagon
• Distinguish type 1 from type 2 diabetes in cause and treatment
• Assign FSH, LH, oestrogen and progesterone their roles in the menstrual cycle
• Classify contraception methods as hormonal or non-hormonal

Topic scope follows the homeostasis and response section of the Department for Education's GCSE combined science subject content: principles of homeostasis, the endocrine system, blood glucose control and diabetes, and hormones in human reproduction and contraception.