The coating of mouse eggs contains a protein, ZP3 - VCE - SSCE Biology - Question 9 - 2010 - Paper 1
Question 9
The coating of mouse eggs contains a protein, ZP3. Sperm must bind to ZP3 to be able to move through the coating to fertilise the egg.
A drug that is designed to bi... show full transcript
Worked Solution & Example Answer:The coating of mouse eggs contains a protein, ZP3 - VCE - SSCE Biology - Question 9 - 2010 - Paper 1
Step 1
A. be a type of enzyme.
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Answer
This option is incorrect because enzymes typically catalyze chemical reactions rather than bind specifically to receptors like ZP3.
Step 2
B. have the same shape as ZP3.
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Answer
This option is also incorrect. While a drug designed to interact with ZP3 would ideally have a complementary shape to bind effectively, it is not the best fit for the intended function of the drug.
Step 3
C. inhibit fertilisation of the egg.
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Answer
This is the correct answer. A drug that binds to ZP3 would prevent sperm from binding to the egg, thus inhibiting fertilization.
Step 4
D. disrupt hormone production throughout the body.
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Answer
This option is incorrect. The drug's function is specific to ZP3 binding and does not relate to hormone production, making it irrelevant to this context.
