Nuclear Envelope Quiz
24 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the function of the nuclear envelope?

  • Stores excess genetic material
  • Synthesizes proteins for the cell
  • Provides energy for the cell
  • Regulates the passage of substances into and out of the nucleus and protects the genetic material (correct)

What are the components of the nuclear envelope?

  • Mitochondria and lysosomes
  • Endoplasmic reticulum and Golgi apparatus
  • Ribosomes and vesicles
  • Outer nuclear membrane and inner nuclear membrane (correct)

What is the function of the nuclear pore complex?

  • Forms tiny holes in the nuclear envelope to allow molecules to pass between the nucleus and the cytoplasm (correct)
  • Regulates the cell's metabolism
  • Stores excess proteins for the cell
  • Produces energy for the cell

What is the relationship between the outer nuclear membrane and the rough endoplasmic reticulum (RER)?

<p>The outer nuclear membrane is continuous with the rough endoplasmic reticulum (C)</p> Signup and view all the answers

What is the composition of the nuclear pore complex?

<p>Over 30 different proteins (C)</p> Signup and view all the answers

What lines the inner surface of the nuclear envelope?

<p>Nuclear lamina, a network of protein filaments (D)</p> Signup and view all the answers

What regulates the size of the pore opening in the nuclear envelope?

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

What allows molecules to pass between the nucleus and the cytoplasm?

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

What is the function of the inner nuclear membrane?

<p>Continuous with the nuclear lamina (C)</p> Signup and view all the answers

What is the function of the outer nuclear membrane?

<p>Continuous with the rough endoplasmic reticulum and studded with ribosomes (A)</p> Signup and view all the answers

What allows molecules such as RNA and proteins to pass between the nucleus and the cytoplasm?

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

What regulates the passage of substances into and out of the nucleus?

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

What is the role of the nuclear lamina?

<p>Provide structural support for the nucleus and help organize the nuclear envelope and chromatin (C)</p> Signup and view all the answers

Which proteins compose the nuclear lamina?

<p>Lamin A, lamin B, and lamin C (C)</p> Signup and view all the answers

What is the basic unit of chromatin?

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

What is the role of the nucleolus?

<p>Site of ribosome biogenesis (D)</p> Signup and view all the answers

What is the composition of the RNA in the nucleolus?

<p>Ribosomal RNA (rRNA) (A)</p> Signup and view all the answers

What is the function of the nucleolus in protein synthesis?

<p>Essential for making ribosomes and synthesizing proteins (B)</p> Signup and view all the answers

What is the function of chromatin organization?

<p>Important for gene regulation and makes it more difficult for transcription factors to access the DNA (B)</p> Signup and view all the answers

What is the composition of the DNA in the nucleolus?

<p>Ribosomal DNA (rDNA) (B)</p> Signup and view all the answers

Which structure is formed by the compaction of nucleosomes?

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

What is the role of the nuclear lamina in nuclear import and export?

<p>Plays a role in nuclear import and export (D)</p> Signup and view all the answers

What is the function of chromatin compaction?

<p>Makes DNA more compact to fit into the nucleus (B)</p> Signup and view all the answers

What is the highest-order structure of chromatin?

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

More Like This

Nuclear Envelope Quiz
24 questions
Estructura de la envuelta nuclear
45 questions
Cell Biology: Nuclear Structure and Function
40 questions
Use Quizgecko on...
Browser
Browser