Photo AI
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 drug that is designed to bind to ZP3 would
Answer
To determine the correct answer, we need to analyze the function of ZP3 and the nature of a drug that would bind to it. ZP3 acts as a receptor for sperm, meaning any drug binding to it must interact specifically with this protein.
- An enzyme (Option A) would typically catalyze a reaction and wouldn't necessarily bind in the manner described.
- A drug that has the same shape as ZP3 (Option B) could theoretically bind to it, but this does not directly relate to the fertilization process or the intended effect of the drug.
- Inhibiting fertilization (Option C) implies that the drug's purpose could be to stop sperm from binding to the egg, which would align with a drug designed to affect the binding.
- Disrupting hormone production (Option D) is unrelated to ZP3's function as a receptor.
Therefore, the most relevant choice that matches the description and implications in the context of fertilization is C. inhibit fertilisation of the egg.