Does the nucleus contain chromosomes or chromatin?
In eukaryotes, however, genetic material is housed in the nucleus and tightly packaged into linear chromosomes. Chromosomes are made up of a DNA-protein complex called chromatin that is organized into subunits called nucleosomes.
Does the nucleolus contain DNA?
The nucleolus occupies up to about 25% of the volume of the cell nucleus. … It contains most of the cell’s genetic material, organized as multiple long linear DNA molecules in complex with a large variety of proteins, (histones) to form chromosomes.
Is chromatin found in plants or animals?
Chromatin is found in both plant and animal cells. The major difference between plant and animal cells is that plant cells have a cell wall and chloroplasts.
Are the chromosomes in the nucleus?
In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
What is the nucleus made of?
Atomic nuclei consist of electrically positive protons and electrically neutral neutrons. These are held together by the strongest known fundamental force, called the strong force. The nucleus makes up much less than . 01% of the volume of the atom, but typically contains more than 99.9% of the mass of the atom.