Pregnancy tests involve applying urine to a test stick; if HCG is present, enzymes attached to antibodies release a dye in the reaction zone and control zone, indicating a positive result.
Las pruebas de embarazo implican aplicar orina a una tira reactiva; si hay HCG, las enzimas unidas a los anticuerpos liberan un tinte en la zona de reacción y la zona de control, lo que indica un resultado positivo.
| Original | 1) [[oc1::Urine is applied to the exposed end of the stick and travels up the absorbant fibres]] 2) [[oc2::Urine will reach the reaction zone first, where antibodies that have enzymes that can turn on dye molecules attached to them bind to the HCG hormone]] 3) [[oc3::The urine will carry the hormones, to the test strip, where there are more antibodies for HCG stuck down to it, so it can't move, forming a sandwich assay]] 4) [[oc4::The attached enzyme releases the dye ]] 5) If no HCG is present, [[oc5::dye will not be released as it can't stick to the test stick]] 6) [[oc6::Unbound antibodies from the reaction zone should end up at the control zone and release more dye, if not, the test was faulty]] |
|---|---|
| Title | Pregnancy Tests |
| Sources | https://youtu.be/aOfWTscU8YM?t=58 |
| Settings | 1,1,0 | n,n,n,n |
| Text1 | 1) Urine is applied to the exposed end of the stick and travels up the absorbant fibres 2) ... 3) ... 4) ... 5) If no HCG is present, ... 6) ... |
| Text2 | 1) Urine is applied to the exposed end of the stick and travels up the absorbant fibres 2) Urine will reach the reaction zone first, where antibodies that have enzymes that can turn on dye molecules attached to them bind to the HCG hormone 3) ... 4) ... 5) If no HCG is present, ... 6) ... |
| Text3 | 1) ... 2) Urine will reach the reaction zone first, where antibodies that have enzymes that can turn on dye molecules attached to them bind to the HCG hormone 3) The urine will carry the hormones, to the test strip, where there are more antibodies for HCG stuck down to it, so it can't move, forming a sandwich assay 4) ... 5) If no HCG is present, ... 6) ... |
| Text4 | 1) ... 2) ... 3) The urine will carry the hormones, to the test strip, where there are more antibodies for HCG stuck down to it, so it can't move, forming a sandwich assay 4) The attached enzyme releases the dye 5) If no HCG is present, ... 6) ... |
| Text5 | 1) ... 2) ... 3) ... 4) The attached enzyme releases the dye 5) If no HCG is present, dye will not be released as it can't stick to the test stick 6) ... |
| Text6 | 1) ... 2) ... 3) ... 4) ... 5) If no HCG is present, dye will not be released as it can't stick to the test stick 6) Unbound antibodies from the reaction zone should end up at the control zone and release more dye, if not, the test was faulty |
| Full | 1) Urine is applied to the exposed end of the stick and travels up the absorbant fibres 2) Urine will reach the reaction zone first, where antibodies that have enzymes that can turn on dye molecules attached to them bind to the HCG hormone 3) The urine will carry the hormones, to the test strip, where there are more antibodies for HCG stuck down to it, so it can't move, forming a sandwich assay 4) The attached enzyme releases the dye 5) If no HCG is present, dye will not be released as it can't stick to the test stick 6) Unbound antibodies from the reaction zone should end up at the control zone and release more dye, if not, the test was faulty |
Tags: b3, bio, monoclonal-antibodies
Learn with these flashcards. Click next, previous, or up to navigate to more flashcards for this subject.
Next card: Cancer cells antigens called tumour markers
Previous card: Hormone called hcg found in the urine pregnant women
Up to card list: GCSE Biology 9-1 AQA Higher