AEMCA Practice Exam

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Prepare for the AEMCA Exam with flashcards and multiple-choice questions, complete with hints and explanations. Get exam-ready today!

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What is the role of the nucleus in a cell?

It is the site of protein synthesis
It is where DNA is found that contributes genetic information
It controls cell division
It transports substances within the cell

The correct answer is: It is where DNA is found that contributes genetic information

The nucleus plays a crucial role in the cell, primarily functioning as the repository of genetic information. It contains the cell's DNA, which is organized into chromosomes and holds the instructions necessary for various cellular processes, including growth, development, and reproduction. By housing the genetic material, the nucleus not only protects DNA but also regulates gene expression, determining how and when specific proteins are produced. This function is essential for maintaining the cell’s identity and response to environmental signals. The other functions mentioned in the choices involve processes that take place within the cell, such as protein synthesis occurring in the ribosomes, while transport of substances is managed by the endoplasmic reticulum and other organelles. Cell division is regulated by various factors but is not solely controlled by the nucleus in isolation.