Each chromosome in a eukaryotic cell is made up of DNA which is coiled and condensed around an octamer of basic proteins called histones.
What are eukaryotic chromosomes made up of?
Each eukaryotic chromosome is composed of DNA coiled and condensed around nuclear proteins called histones.
What macromolecule make up chromosomes?
Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
What is a eukaryotic chromosome made of quizlet?
Eukaryotic chromosomes are composed of chromatin, a complex of DNA and associated proteins. In fact, most eukaryotic chromosomes are about 60% protein and 40% DNA.
What are prokaryotic chromosomes made of?
Each chromosome contains a molecule of DNA that is supercoiled and compacted by nucleoid-associated proteins (NAPs). Prokaryotic cells may have only one chromosome, but that one chromosome is a very long DNA molecule that must be condensed to fit inside a tiny space.
Do prokaryotes and eukaryotes have ribosomes?
All ribosomes (in both eukaryotic and prokaryotic cells) are made of two subunits — one larger and one smaller. In eukaryotes, these pieces are identified by scientists as the 60-S and 40-S subunits. In prokaryotes, the ribosomes are made of slightly smaller subunits, called 50-S and 30-S.
Are nucleic acids macromolecules?
Nucleic acid is an important class of macromolecules found in all cells and viruses. The functions of nucleic acids have to do with the storage and expression of genetic information. Deoxyribonucleic acid (DNA) encodes the information the cell needs to make proteins.
Where and how are chromosomes formed?
Answer: 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 are chromosomes made up of Class 9?
Each chromosome is made up of two components (i) Deoxyribonucleic acid (DNA) (ii) Proteins (e.g.; his tones and acidic proteins) These consist of two (unreplicated) or four (duplicated) arms and a primary constriction or centromere which gives them a particular shape due to its position.
How are eukaryotic chromosomes different from prokaryotic?
Eukaryotic chromosomes are located within the nucleus, whereas prokaryotic chromosomes are located in the nucleoid. The key difference between prokaryotic and eukaryotic cells is that eukaryotic cells have a membrane-bound nucleus (and membrane-bound organelles), whereas prokaryotic cells lack a nucleus.
How many nucleotides make up a typical human 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.
What is Interphase quizlet?
Interphase. the resting phase between successive mitotic divisions of a cell, or between the first and second divisions of meiosis.