IBDP Biology Question Analysis Topic: Biology - Short Questions
Exam Questions:
1) Where is acrosome present in humans? Write its function.
2) Why is it desirable to use unleaded petrol in vehicles fitted with catalytic converters?
Answers:
For IBDP Biology, you should know:
1) In the sperm cells or spermatozoa of many animals, an organelle called the acrosome develops across the anterior half of the head. It resembles a cap and was developed from the Golgi.
Hyaluronidase and acrosin, two digestive enzymes, among others, are present in it. By dissolving the ovum's outer membrane (zona pellucida), they enable the haploid nucleus in the sperm to fuse with the haploid nucleus in the ovum.
2) The converter may quickly accumulate lead, poisoning the catalyst. The catalyst will therefore cease to function in a relatively short period of time. As a result, it is preferable to use unleaded fuel in cars that have catalytic converters.
Work hard for your IBDP Biology examination!
End of analysis. Great!
