Humber Admissions Practice Test

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Prepare for the Humber Admissions Test with comprehensive quizzes. Test your knowledge with multiple choice questions and insightful explanations. Boost your confidence and readiness for exam day!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the role of the Golgi apparatus in a cell?

DNA replication
Modifying and packaging proteins
Energy production
Transport of substances

The correct answer is: Modifying and packaging proteins

The Golgi apparatus plays a crucial role in the processing and packaging of proteins that are synthesized in the cell. After proteins are produced in the rough endoplasmic reticulum, they are transported to the Golgi apparatus, where they undergo several modifications. These modifications can include the addition of carbohydrate groups (glycosylation), which helps in determining the destination and function of the proteins. Once the proteins are modified, the Golgi apparatus sorts and packages them into vesicles. These vesicles carry the proteins to their designated locations—either within the cell or for export outside the cell through exocytosis. This process of modification and packaging is essential for the proper functioning of the cell, ensuring that proteins reach their targets in the correct form and at the right time. The other options represent different cellular functions that are not associated with the Golgi apparatus. For instance, DNA replication occurs in the nucleus, energy production is primarily carried out by the mitochondria, and transport of substances may involve various organelles and cellular mechanisms but is not specifically handled by the Golgi apparatus.