BIO173 The Nucleus in Eukaryotic Cells

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Questions and Answers

What is the main function of the nucleus in eukaryotic cells?

  • Store excess water to maintain cell shape
  • Directly synthesize all proteins in the cell
  • Isolate DNA from dangerous metabolic reactions in the cytoplasm (correct)
  • Help with energy production in the cell

How does the nuclear envelope contribute to DNA organization?

  • Provides attachment sites to help organize DNA (correct)
  • Stores excess energy for the cell
  • Facilitates protein synthesis within the nucleus
  • Creates a physical barrier between the nucleus and the cytoplasm

What is the function of the nuclear pores in the nuclear envelope?

  • Store excess nutrients for the nucleus
  • Prevent any substance from entering or leaving the nucleus
  • Facilitate selective transport of large molecules (correct)
  • Separate DNA from RNA molecules

Why is the nuclear envelope continuous with the endoplasmic reticulum?

<p>To facilitate communication between the nucleus and cytoplasm (A)</p> Signup and view all the answers

Which of the following is NOT a function of the nucleus in eukaryotic cells?

<p>Synthesizes carbohydrates for cellular energy (C)</p> Signup and view all the answers

What role does mRNA play in relation to the nucleus?

<p>Carries messages from the nucleus to the cytoplasm for protein synthesis (B)</p> Signup and view all the answers

What is the main function of the Nucleolus?

<p>Synthesizing ribosomal subunits (B)</p> Signup and view all the answers

Which of the following is NOT found in the Nucleoplasm?

<p>Lipids (C)</p> Signup and view all the answers

Where are the Ribosomal subunits synthesized?

<p>Nucleus (C)</p> Signup and view all the answers

What process takes place in the Ribosomes?

<p>Protein Synthesis (B)</p> Signup and view all the answers

Which evolutionary theory describes the large DNA virus infecting an Archaea cell?

<p>Viral Eukaryogenesis (B)</p> Signup and view all the answers

What is the role of the Exomembrane according to the text?

<p>Forming a second exterior membrane (Plasma Membrane) (B)</p> Signup and view all the answers

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