Used in pregnancy tests (Edexcel GCSE Biology): Quizzes
📚Quizzes
Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
What hormone do pregnancy tests detect in urine?
What hormone do pregnancy tests detect in urine?
HCG
When is HCG hormone produced in the body?
When is HCG hormone produced in the body?
Only during pregnancy
What are the monoclonal antibodies attached to in pregnancy test strips?
What are the monoclonal antibodies attached to in pregnancy test strips?
Blue beads
What is the key property that makes monoclonal antibodies useful for pregnancy tests?
What is the key property that makes monoclonal antibodies useful for pregnancy tests?
Specific binding to target molecules
What happens when HCG is present in urine during a pregnancy test?
What happens when HCG is present in urine during a pregnancy test?
HCG binds to antibodies on blue beads
What creates the visible blue line in a positive pregnancy test?
What creates the visible blue line in a positive pregnancy test?
Blue beads accumulating at test line
What happens to blue beads when no HCG is present?
What happens to blue beads when no HCG is present?
They don't get trapped at test line
How does urine move through a pregnancy test strip?
How does urine move through a pregnancy test strip?
It flows up through the materials
Why do monoclonal antibodies only bind to HCG in pregnancy tests?
Why do monoclonal antibodies only bind to HCG in pregnancy tests?
They have specific binding properties
What role do blue beads play in pregnancy tests?
What role do blue beads play in pregnancy tests?
Act as visual indicators
Besides pregnancy testing, what else are monoclonal antibodies used for?
Besides pregnancy testing, what else are monoclonal antibodies used for?
Measuring hormone levels in labs