Nucleus and Its Functions

This video from 2 Minute Classroom explains the structure and function of the nucleus in eukaryotic cells. It covers the nucleus's role in housing DNA, directing ribosome synthesis, and gene expression. The nuclear envelope's protective function is highlighted, along with the nucleolus's role in ribosome assembly. The video also discusses DNA's organization into chromosomes and chromatin. Viewers are encouraged to subscribe for more educational content.

What is the primary function of the nucleus in eukaryotic cells?

• To transport nutrients

• To digest cellular waste

• To house and protect DNA

• To produce energy

Which process occurs within the nucleus?

• Photosynthesis

• Protein synthesis

• Transcription

• Glycolysis

What is the nuclear envelope?

• A single membrane surrounding the nucleus

• A double membrane with nuclear pores

• A protein layer protecting the nucleus

• A lipid bilayer without pores

Why does DNA never leave the nucleus?

• It is bound to the nuclear envelope

• It is too large to exit

• It needs to be protected from nuclease enzymes

• It is constantly being replicated

What is the nucleolus primarily responsible for?

• Ribosome assembly

• DNA replication

• Protein synthesis

• Cell division

Where is the nucleolus located?

• In the nuclear envelope

• In the nucleoplasm

• In the cytoplasm

• In the endoplasmic reticulum

What happens to DNA when the cell is preparing to divide?

• It forms chromatin

• It forms chromosomes

• It exits the nucleus

• It is destroyed

What is chromatin?

• A tightly packed form of DNA

• A protein that synthesizes DNA

• A loosely packed form of DNA wrapped around histone proteins

• A type of RNA