Hahaha! While chromosomes are called DNA molecules, nucleotides are also called DNA molecules. Sorry I forgot about that. Here's an easier to understand explanation (not originally mine)....
How many DNA molecules are in a chromosome?
Each chromosome contains a single very long, linear DNA molecule. In the smallest human chromosomes this DNA molecule is composed of about 50 million nucleotide pairs; the largest chromosomes contain some 250 million nucleotide pairs. The diploid human genome is thus composed of 46 DNA molecules of 24 distinct types.
How many strands of DNA are chromosomes made of?
two
Most of humans’ DNA is typically packaged into 46 chromosomes located in the cell’s nucleus, which is a specialized compartment for storing DNA. Each of the chromosomes in the nucleus is made up of two linear DNA strands wrapped around each other.
Is a chromosome a single DNA molecule?
Each chromosome contains a single double-stranded piece of DNA along with the aforementioned packaging proteins. This condensed form is approximately 10,000 times shorter than the linear DNA strand would be if it was devoid of proteins and pulled taut.
What are DNA chromosomes made of?
A structure found inside the nucleus of a cell. A chromosome is made up of proteins and DNA organized into genes. Each cell normally contains 23 pairs of chromosomes.
How much DNA is in a single chromosome?
One chromosome has 2 strands of DNA in a double helix. But the 2 DNA strands in chromosomes are very, very long. One strand of DNA can be very short – much shorter than even a small chromosome. Strands of DNA are made by joining together the 4 DNA bases in strings.
What is a single molecule of DNA called?
DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C).
How many strands of DNA are in each cell?
At least 4,600 trillion. Each diploid cell in the human body consists of 46 strands of DNA, each representing each of the 46 chromosomes in the cell.
What do atoms make up DNA?
DNA, which stands for deoxyribonucleic acid, resembles a long, spiraling ladder. It consists of just a few kinds of atoms: carbon, hydrogen, oxygen, nitrogen, and phosphorus. Combinations of these atoms form the sugar-phosphate backbone of the DNA — the sides of the ladder, in other words.
How is DNA related to chromesomes?
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.
How many DNA strands are in one chromosome?
One chromosome has 2 strands of DNA in a double helix. But the 2 DNA strands in chromosomes are very, very long. One strand of DNA can be very short – much shorter than even a small chromosome.