Zoology Lecture 4: The Cell Organelles - The Nucleus
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Questions and Answers

What is the function of the nucleolus?

  • Producing ribosomal RNA (rRNA) (correct)
  • Synthesizing messenger RNA (mRNA)
  • Translating mRNA into proteins
  • Exporting proteins outside the cell

Where is ribosomal RNA (rRNA) made according to the text?

  • Mitochondria
  • Nucleus (correct)
  • Cytoplasm
  • Endoplasmic reticulum

Which structures carry out protein synthesis?

  • Lysosomes
  • Golgi apparatus
  • Ribosomes (correct)
  • Nucleus

Where do proteins synthesized by free ribosomes end up according to the text?

<p>Cytoplasm (A)</p> Signup and view all the answers

What is the main function of the nucleus in a cell?

<p>Making messenger RNA (mRNA) (D)</p> Signup and view all the answers

What is the role of ribosomes in protein synthesis?

<p>Translating genetic message into proteins (B)</p> Signup and view all the answers

What is the primary function of the nucleus in a eukaryotic cell?

<p>Genetic information storage (B)</p> Signup and view all the answers

Which type of cells lacks a nucleus?

<p>Red blood cells (B)</p> Signup and view all the answers

What is the role of the nuclear lamina in a eukaryotic cell?

<p>Maintaining shape of the nucleus (C)</p> Signup and view all the answers

Which organelle surrounds the nucleus and separates its contents from the cytoplasm?

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

Where is the genetic information stored in a eukaryotic cell?

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

What is the function of the nucleolus in a eukaryotic cell?

<p>Ribosome assembly (A)</p> Signup and view all the answers

What is the function of the nuclear envelope?

<p>Regulating the entry and exit of most proteins and RNAs (C)</p> Signup and view all the answers

What is the role of the nuclear lamina?

<p>Maintaining the shape of the nucleus by supporting the nuclear envelope (C)</p> Signup and view all the answers

Where is ribosomal RNA (rRNA) assembled?

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

Which structure separates the internal compartment of the endoplasmic reticulum from the cytosol?

<p>Cisternal space (D)</p> Signup and view all the answers

What is the function of the pore complex?

<p>Regulating the entry and exit of most proteins and RNAs (D)</p> Signup and view all the answers

Which structure functions as a framework of fibers extending throughout the nuclear interior?

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

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