Podcast
Questions and Answers
What is the role of the fibrillar centre within the nucleolus?
What is the role of the fibrillar centre within the nucleolus?
- Site of rRNAs synthesis (correct)
- Site of RNA polymerase I activity
- Site of ribosomal subunits assembly
- Site of pre-rRNA processing
Where are the genes for 5.8S, 18S, and 28S rRNAs located in humans?
Where are the genes for 5.8S, 18S, and 28S rRNAs located in humans?
- On chromosome 1
- In the granular component of the nucleolus
- In the nucleolus
- On the short arm of acrocentric chromosomes (correct)
What happens to the nucleolus at the beginning of mitosis?
What happens to the nucleolus at the beginning of mitosis?
- Increases in size
- Transfers 5S rRNA outside the nucleus
- Disassembles (correct)
- It begins to reassemble
What is the function of nuclear speckles?
What is the function of nuclear speckles?
Where are ribosomal proteins synthesized before they are transported to the nucleolus?
Where are ribosomal proteins synthesized before they are transported to the nucleolus?
What is the primary role of Cajal bodies?
What is the primary role of Cajal bodies?
How do nucleoli typically form after cell division?
How do nucleoli typically form after cell division?
Where are 5S rRNA genes located and what RNA polymerase transcribes them?
Where are 5S rRNA genes located and what RNA polymerase transcribes them?
What happens in nuclear stress bodies during cellular stress?
What happens in nuclear stress bodies during cellular stress?
What happens to nucleoli at the beginning of mitosis and telophase?
What happens to nucleoli at the beginning of mitosis and telophase?
What is the main function of the nucleus in a cell?
What is the main function of the nucleus in a cell?
Which organelle is the nucleus NOT directly connected to?
Which organelle is the nucleus NOT directly connected to?
What happens to the nucleus during cell division?
What happens to the nucleus during cell division?
Which part of the nucleus contains the genetic material?
Which part of the nucleus contains the genetic material?
What is the function of the inner nuclear membrane?
What is the function of the inner nuclear membrane?
Which organelle shares a membrane structure with the outer nuclear membrane?
Which organelle shares a membrane structure with the outer nuclear membrane?
What is the nuclear envelope made up of?
What is the nuclear envelope made up of?
What is the function of nuclear pores?
What is the function of nuclear pores?
What is the role of nucleoporins within the nuclear pore complex?
What is the role of nucleoporins within the nuclear pore complex?
How do small water-soluble molecules pass through the nuclear pores?
How do small water-soluble molecules pass through the nuclear pores?
What is the primary function of nuclear lamina?
What is the primary function of nuclear lamina?
Which structure plays a vital role during prophase of mitotic division?
Which structure plays a vital role during prophase of mitotic division?
What is found in the nuclear interior of a cell?
What is found in the nuclear interior of a cell?
Which structure is involved in intense rRNA transcription and ribosomal subunit assembly?
Which structure is involved in intense rRNA transcription and ribosomal subunit assembly?
'Nuclear bodies' within the nucleus are best described as areas that:
'Nuclear bodies' within the nucleus are best described as areas that:
'Importins' and 'exportins' are primarily involved in:
'Importins' and 'exportins' are primarily involved in:
What is the function of central transport channels in nuclear pores?
What is the function of central transport channels in nuclear pores?
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