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Questions and Answers
What is the function of the nuclear lamina?
What is the function of the nuclear lamina?
- Aids in the bidirectional movement of molecules
- Transcribes rRNA and processes ribosomal subunits
- Maintains the shape and stability of the nuclear envelope (correct)
- Facilitates the import and export of macromolecules
Which component of the nucleus is responsible for rRNA synthesis?
Which component of the nucleus is responsible for rRNA synthesis?
- Dense fibrillar component
- Fibrillar centre (correct)
- Granular component
- Nuclear speckles
What is directly involved in the regulation of nuclear processes such as transcription and DNA replication?
What is directly involved in the regulation of nuclear processes such as transcription and DNA replication?
- Lamins (correct)
- TF factors
- Helicases
- Histones
What is the primary function of transport receptors like importins and exportins?
What is the primary function of transport receptors like importins and exportins?
What is the role of nuclear bodies within the nucleus?
What is the role of nuclear bodies within the nucleus?
Which molecules pass through specific aqueous channels in nuclear pore complexes passively?
Which molecules pass through specific aqueous channels in nuclear pore complexes passively?
What process results in the dissolution of the nuclear envelope during prophase of mitotic division?
What process results in the dissolution of the nuclear envelope during prophase of mitotic division?
What is the site of ribosomal subunits assembly within the nucleolus?
What is the site of ribosomal subunits assembly within the nucleolus?
Which structure binds DNA with the nuclear envelope?
Which structure binds DNA with the nuclear envelope?
What is attached to nuclear pores and integral proteins of the inner nuclear membrane?
What is attached to nuclear pores and integral proteins of the inner nuclear membrane?
What polymerase transcribes the 5S rRNA genes located on chromosome 1?
What polymerase transcribes the 5S rRNA genes located on chromosome 1?
When does the nucleolus disassemble and begin to reassemble?
When does the nucleolus disassemble and begin to reassemble?
Where are ribosomal proteins synthesized before being assembled with rRNAs to form ribosomal subunits?
Where are ribosomal proteins synthesized before being assembled with rRNAs to form ribosomal subunits?
What is the main function of nuclear speckles in the cell?
What is the main function of nuclear speckles in the cell?
Which nuclear bodies participate in the cellular response to stress like heat, chemicals, and ultraviolet light?
Which nuclear bodies participate in the cellular response to stress like heat, chemicals, and ultraviolet light?
What is the function of transcription factories within the nucleus?
What is the function of transcription factories within the nucleus?
Where do Cajal bodies primarily carry out their functions?
Where do Cajal bodies primarily carry out their functions?
What determines the size of the nucleolus in a cell?
What determines the size of the nucleolus in a cell?
'47S pre-rRNA' contains which types of rRNAs?
'47S pre-rRNA' contains which types of rRNAs?
What is the function of the nucleus in a cell?
What is the function of the nucleus in a cell?
Which part of the nucleus is involved in the exchange of molecules between the perinuclear space and the nuclear interior?
Which part of the nucleus is involved in the exchange of molecules between the perinuclear space and the nuclear interior?
What is the function of nuclear pores in the nuclear envelope?
What is the function of nuclear pores in the nuclear envelope?
Which structure spans the whole nuclear envelope and facilitates molecule exchange?
Which structure spans the whole nuclear envelope and facilitates molecule exchange?
What is the function of the nuclear lamina in relation to the nuclear envelope?
What is the function of the nuclear lamina in relation to the nuclear envelope?
How many nuclear pores does a typical mammalian cell contain in its nuclear envelope?
How many nuclear pores does a typical mammalian cell contain in its nuclear envelope?
What is the function of the nuclear interior referred to as nucleoplasm (karyoplasm)?
What is the function of the nuclear interior referred to as nucleoplasm (karyoplasm)?
Which part of the nucleus is continuous with the membrane of the endoplasmic reticulum?
Which part of the nucleus is continuous with the membrane of the endoplasmic reticulum?
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