This is a very interesting question that properly deserves a very scientific answer but I guess you want the simplified version. Basically, the way a strand or strands of DNA can fit inside nuclei has to do with something called "chromosome condensation". In non-scientific speak this means that the DNA is squashed together to make a much smaller and tighter package. As you have rightly guessed, nuclei of cells aren't particularly big, and it's even more amazing that not withstanding its size, DNA does actually get transferred between the inside and outside of the nucleus otherwise cell replication simply couldn't occur. Transit (movement) from the inside to the outside of the nucleus is facilitated through nuclear pores. Free DNA is comparatively very bulky and is at great risk of chemical attack from substances called enzymes. Since DNA contains the "blueprint" for the synthesis of all cellular components, it's therefore critical that these molecules are not damaged otherwise the messages and information that they carry could be disrupted. After cells divide, the DNA is therefore condensed (made smaller) into structures called chromosomes. These consist of the DNA strands and a substance called chromatin, the major component of which are proteins called histones. The chromatin assists with the process of folding up the free DNA into a smaller package.
The DNA molecule is tightly coiled around histone proteins to form chromatin. This chromatin is further packaged and organized into chromosomes. The chromosomes are contained within the nucleus of a cell, which is separated from the rest of the cell by a nuclear membrane. This organization helps protect and regulate access to the genetic material stored in DNA.
mRNA synthesis from a DNA strand occurs during the process of transcription inside the nucleus. RNA polymerase enzymes bind to the DNA template and synthesize a complementary RNA strand by adding nucleotides following the base-pairing rules (A-U, G-C). The mRNA strand then undergoes processing, including capping, splicing, and polyadenylation, before being transported out of the nucleus for translation into proteins.
DNA in eukaryotes is mostly found inside the nucleus. However there is a small amount of DNA contained in the mitochondria.
In eukaryotic cells, DNA is stored within the nucleus. The DNA is organized into chromosomes and is surrounded by a nuclear membrane. Proteins called histones help package the DNA into a compact structure called chromatin.
The nucleus is the large organelle responsible for producing and storing the cell's DNA. It acts as the control center of the cell, regulating gene expression and directing cellular activities. The DNA stored in the nucleus contains the instructions for making proteins necessary for cell function and growth.
Proteins are made using DNA. DNA is stored in nucleus
cromosomes
Transcription
mRNA synthesis from a DNA strand occurs during the process of transcription inside the nucleus. RNA polymerase enzymes bind to the DNA template and synthesize a complementary RNA strand by adding nucleotides following the base-pairing rules (A-U, G-C). The mRNA strand then undergoes processing, including capping, splicing, and polyadenylation, before being transported out of the nucleus for translation into proteins.
what is the meaning of chromosomes
In a eukaryotic cell the genetic material, DNA, is stored int he nucleus.
The Nucleus and mitochondria in eucaryotes
there is no DNA in the cell nucleus however the cell nucleus is important to replicating a cell in DNA strand. (it supprots the chromatin that replicates the DNA)
the nucleus
there is no DNA in the cell nucleus however the cell nucleus is important to replicating a cell in DNA strand. (it supprots the chromatin that replicates the DNA)
the nucleus stores all the genetic information (DNA)
DNA in eukaryotes is mostly found inside the nucleus. However there is a small amount of DNA contained in the mitochondria.
The cell part that contains the genes for heredity is the nucleus. Inside the nucleus, the genetic information is stored in the form of DNA molecules.