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DNA need to change periodically from a long double-helix chromatin molecule into a tightly wound-up chromosome?
When the DNA is an open chromatin molecule, portions of it are actively being transcribed by mRNA. The cell will then be using those instructions to manufacture amino acid chains and proteins. When the DNA winds up into a condensed chromosome it is preparing for mitosis, which would be very difficult to occur if the DNA were all stretched out.
What else can I help you with?
Is chromatin a chromosome consisting of two chromatids held together by a centromere?
No, chromatin is the complex of DNA and protein that makes up a chromosome. Chromosomes consist of a single DNA molecule (or two chromatids) that are held together by a centromere during cell division.
How many DNA molecule in a chromatid?
Each chromosome is originally made of one DNA molecule.
Molecules consisting of DNA plus proteins?
Chromatin is the complex of DNA and proteins found within the nucleus of a cell. It helps regulate gene expression and forms chromosomes during cell division. The proteins associated with DNA in chromatin include histones and non-histone proteins.
Describe the structure of eukaryotic chromosomes?
Eukaryotic chromosomes consist of a DNA-protein complex that is organized in a compact manner which permits the large amount of DNA to be stored in the nucleus of the cell. The Chromatin and Nucleosome are two of the most important parts.
In order for the DNA molecule to get short and fat to become a chromosome it must first wrap around small molecules called?
In order for DNA to exist in the condensed, super-coiled form, it must wrap around proteins called histones
What is a chemical found within each chromosome?
DNA (deoxyribonucleic acid) is the chemical found within each chromosome. It is a molecule that carries the genetic instructions for the development, functioning, growth, and reproduction of all known living organisms.
What is a single molecule of DNA and associated proteins?
A single molecule of DNA consists of a double helix structure made up of nucleotides. Associated proteins, such as histones, help package and organize the DNA into chromatin. Together, the DNA and proteins form chromosomes within the nucleus of a cell.
Is chromatin a chromosome consisting of two chromatids held together by a centromere?
No, chromatin is the complex of DNA and protein that makes up a chromosome. Chromosomes consist of a single DNA molecule (or two chromatids) that are held together by a centromere during cell division.
What molecule makes up a chromatid?
Chromatin
what organic molecule is found in the chromatin of cells?
DNA and protein
What is the building block of a chromosome?
The building blocks of a chromosome are DNA molecules. DNA is wrapped around proteins called histones to form chromatin, which then condenses to form the structure of a chromosome. Each chromosome contains a single long DNA molecule with many genes.
A molecule of DNA is packaged and carried by a larger molecule called a?
Chromosome
What is the What is the difference between chromatin and nucleotide?
A nucleotide is only one unit of the structure of DNA/RNA, consisting of a phosphate group, a sugar, and a base (adenine, guanine, cytosine, thymine, or uracil).Chromatin however is the complex of DNA and protein that composes a chromosome.
What is the large molecule found in a chromosome?
GENETICS
Known as one DNA molecule stretched out?
A stretched out DNA molecule is referred to as chromatin. Chromatin is the material that makes up chromosomes, and consists of DNA wrapped around histone proteins. It is found in the nucleus of eukaryotic cells.
What is a list of the 3 parts of a chromosome?
Telomere - The ends of the chromosome. Centromere - The primary constriction of the chromosome. Chromatid - A single molecule of DNA. The centromere also divides the chromosome into a short arm (p) and a long arm (q).
What is the difference between a chromosome and a DNA molecule?
The difference between a chromosome and a DNA molecule is that a chromosome is a single DNA molecule associated with proteins and a DNA molecule is a long thin molecule that stores genetic information.
