Nucleus Knowledge-Based Download PDF

Questions

1. 1.

   In eukaryotic cells, what is the term for the complex of nuclear DNA packaged with histone proteins found within the nucleoplasm during interphase?

   • A) Chromatin
   • B) Centrosome
   • C) Nucleoid
   • D) Kinetochore
2. 2.

   In eukaryotic cells, the outer membrane of the nuclear envelope is physically continuous with the membrane of which organelle?

   • A) Golgi apparatus
   • B) Lysosome
   • C) Rough endoplasmic reticulum
   • D) Peroxisome
3. 3.

   Which structural component lines the inner surface of the inner nuclear membrane, is composed of intermediate filaments, and provides mechanical support to maintain the shape of the nucleus?

   • A) The nuclear lamina
   • B) The nucleoplasm
   • C) The central spindle
   • D) The rough endoplasmic reticulum
4. 4.

   Which structure spans the inner and outer membranes of the nuclear envelope to regulate the selective transport of macromolecules, such as proteins and RNA, between the nucleoplasm and the cytoplasm?

   • A) Nuclear lamina
   • B) Nuclear pore complex
   • C) Nucleosome
   • D) Kinetochore
5. 5.

   Which of the following functions is carried out specifically by the nucleolus within the eukaryotic nucleus?

   • A) Synthesizing ribosomal RNA and assembling the subunits of ribosomes
   • B) Translating mature mRNA transcripts directly into functional polypeptides
   • C) Synthesizing membrane phospholipids and storing intracellular calcium ions
   • D) Sorting, modifying, and packaging newly formed proteins for secretion