Cell Nucleus Structure and Function

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Questions and Answers

Which structure contains the chromosomes in the form of chromatin?

  • Nucleus (correct)
  • Nuclear envelope
  • Nucleolus
  • Nucleoplasm

What is the function of nuclear pores?

  • Allow RNA, but not DNA, to pass through (correct)
  • Prevent RNA and DNA from passing through
  • Allow both RNA and DNA to pass through
  • Allow DNA, but not RNA, to pass through

Which type of chromatin is responsible for mRNA/tRNA transcription?

  • Nuclear envelope
  • Heterochromatin
  • Euchromatin (correct)
  • Nucleoplasm

What is the function of nucleolus in the nucleus?

<p>Synthesizing ribosomal RNA (r-RNA) and combining it with ribosomal protein to form ribosomes (C)</p> Signup and view all the answers

What is the function of nuclear pores in the nucleus?

<p>Allowing RNA, but not DNA, to pass through (C)</p> Signup and view all the answers

Where is chromatin located in the nucleus?

<p>Inside the nuclear envelope (B)</p> Signup and view all the answers

What happens to the nucleolus during mitosis?

<p>It disappears and then reappears in daughter cells (C)</p> Signup and view all the answers

What is the structure responsible for combining ribosomal RNA with ribosomal protein to form ribosomes?

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

What is the function of nucleolus in the nucleus?

<p>Synthesizing ribosomal RNA (r-RNA) and assembling ribosomes (A)</p> Signup and view all the answers

What is the role of euchromatin in the nucleus?

<p>Actively transcribing mRNA and tRNA (B)</p> Signup and view all the answers

What happens to the nucleolus during mitosis?

<p>It disappears, then reappears in daughter cells (D)</p> Signup and view all the answers

What is the function of nuclear pores in the nucleus?

<p>Allowing RNA, but not DNA, to pass through (C)</p> Signup and view all the answers

Where are the chromosomes located in the form of chromatin in the nucleus?

<p>Bathed in the nucleoplasm (B)</p> Signup and view all the answers

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