Podcast
Questions and Answers
What is the function of histone proteins in chromatin structure?
What is the function of histone proteins in chromatin structure?
- They play a role in DNA supercoiling and regulation of gene expression. (correct)
- They are responsible for DNA replication in the cell nucleus.
- They help in the formation of chromosomes during cell division.
- They are involved in the production of non-histone proteins.
What is the structure of chromatin in non-dividing cells?
What is the structure of chromatin in non-dividing cells?
- Formed of chromosomes before cell division.
- Visible by light microscope as regularly beaded thread.
- Not visible by light microscope but can be seen by electron microscope. (correct)
- Composed of only histone proteins and non-histone proteins.
What are the components of each chromatid in chromatin structure?
What are the components of each chromatid in chromatin structure?
- Two DNA molecules and histone proteins.
- Only histone proteins and non-histone proteins.
- Multiple DNA molecules and nucleosomes.
- A single DNA molecule, histone proteins, and non-histone proteins. (correct)
What is the length of DNA in each cell nucleus?
What is the length of DNA in each cell nucleus?
What role do histones play in chromatin structure?
What role do histones play in chromatin structure?
When does the chromatin form chromosomes?
When does the chromatin form chromosomes?
Which protein is attached to the linker DNA and facilitates the packing of nucleosomes into more compact structures?
Which protein is attached to the linker DNA and facilitates the packing of nucleosomes into more compact structures?
How many histones form each nucleosome?
How many histones form each nucleosome?
What is the function of linker or spacer DNA in the nucleosome structure?
What is the function of linker or spacer DNA in the nucleosome structure?
What is the shape assumed by the tightly packed nucleosomes that form a nucleofilament?
What is the shape assumed by the tightly packed nucleosomes that form a nucleofilament?
During which phase of the cell cycle does the DNA replicate to produce copies for both daughter cells?
During which phase of the cell cycle does the DNA replicate to produce copies for both daughter cells?
What happens in the G2 phase of the cell cycle?
What happens in the G2 phase of the cell cycle?
What is the waiting period known as, wherein each daughter cell divides again in embryonic or rapidly proliferating tissue?
What is the waiting period known as, wherein each daughter cell divides again in embryonic or rapidly proliferating tissue?
In which phase does cytokinesis pinch the cell in half, producing two daughter cells?
In which phase does cytokinesis pinch the cell in half, producing two daughter cells?
What do differentiated cells that have acquired their specialized function and form do?
What do differentiated cells that have acquired their specialized function and form do?
What do stem cells retain their potential to do?
What do stem cells retain their potential to do?
