Pregnancy Test Mechanism

Part of Monoclonal Antibodies · Section 6 of 17

DiagramUnit: Infection & ResponseGCSE

This diagram covers Pregnancy Test Mechanism within Monoclonal Antibodies for GCSE Biology. Production and medical applications of identical antibodies, hybridoma cells, diagnostics It is section 6 of 17 in this topic. Focus on the labels, the relationships between parts, and the explanation that turns the diagram into an exam-ready answer.

Pregnancy Test Mechanism

Painted cross-section of a pregnancy test stick showing the three zones: sample pad receiving urine with hCG hormones, mobile antibodies with blue dye tags binding hCG, and test + control lines showing blue bands when positive.
Pregnancy Test Strip Sample Pad (urine) Conjugate Pad (colored antibodies) Test Line (immobilized anti-hCG) Control Line (always appears) Absorbent Pad hCG hCG hCG hCG hormones (if pregnant)

Practice questions for Monoclonal Antibodies

What does the term 'monoclonal antibody' mean?

  • A. Identical antibodies produced from a single clone of cells
  • B. Antibodies that target many different antigens
  • C. Antibodies produced by many different cells
  • D. Antibodies that come from multiple animal species
1 markfoundation

Explain why hybridoma cells are needed to produce monoclonal antibodies.

3 marksstandard

Quick recall flashcards

What are myeloma cells?
Immortal cancer cells that divide continuously and are used to create hybridoma cells
What is hCG?
Human chorionic gonadotrophin - a hormone only produced during pregnancy, detected by pregnancy tests

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