Table of Contents
What is the complex of DNA and associated proteins in the eukaryotic cell?
Chromatin is a complex of DNA and proteins that forms chromosomes within the nucleus of eukaryotic cells.
What is the difference in the organization of DNA in chromosomes between prokaryotes and eukaryotes?
The main difference between prokaryotic and eukaryotic chromosomes is that the prokaryotic chromosomes are short, circular DNA molecules whereas the eukaryotic chromosomes are long, linear molecules. Furthermore, prokaryotic chromosomes occur in the cytoplasm while eukaryotic chromosomes occur inside the nucleus.
What is the complex of protein and DNA that make up the chromosome called?
chromatin
Chromosomes are made up of a DNA-protein complex called chromatin that is organized into subunits called nucleosomes.
Is a DNA-protein complex that makes up eukaryotic chromosomes quizlet?
The DNA- protein complex found within eukaryotic chromosomes is termed chromatin.
What is a key difference between prokaryotic and eukaryotic chromosomes quizlet?
What are the key differences between prokaryotic and eukaryotic chromosomes? Prokaryotes have a single circular chromosome that is attached at one site to the cell membrane, whereas eukaryotic cells have free-floating linear chromosomes within a cell nucleus.
How do prokaryotic and eukaryotic chromosomes differ quizlet?
What is the difference between prokaryotic chromosomes and eukaryotic chromosomes? Prokaryotic cells have a single circular chromosomes attached to the cell membrane, while eukaryotic cells contain free-floating linear chromosomes within a nucleus.
What are the differences between the structure of DNA in eukaryotic nuclei and that in bacteria?
What are the differences between the structure of DNA in eukaryotic nuclei and that in bacteria? a) Eukaryotic DNA is double stranded, while prokaryotic DNA is single stranded.
How DNA a gene and a chromosome differs from each other?
Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person’s genes. Genes are contained in chromosomes, which are in the cell nucleus.
What are the defining features of eukaryotic chromosomes?
Eukaryotes have [1] a membrane-bound nucleus, [2] intracellular organelles, and [3] a cytoskeleton • Most eukaryotes undergo sexual reproduction •The genome size of eukaryotes spans a wider range than that of most prokaryotes • Eukaryotic genomes have a lower density of genes • Prokaryotes are haploid; eukaryotes have …
What is a eukaryotic chromosome made of?
Each eukaryotic chromosome is composed of DNA coiled and condensed around nuclear proteins called histones. Humans inherit one set of chromosomes from their mother and a second set from their father.
How the structure of a prokaryotic chromosome differs from the structure of a eukaryotic chromosome?
What is a major difference between eukaryotic DNA?
Prokaryotic DNA vs Eukaryotic DNA
| Prokaryotic DNA | Eukaryotic DNA |
|---|---|
| Occurrence | |
| Occurs as a covalent closed circular form of DNA. | Occurs as a linear form of DNA with two ends. |
| Size | |
| The size of the DNA is less than 0.1 pg in prokaryote. | The size of the DNA is high, usually more than 1 pg. |
How do eukaryotes differ from prokaryotes?
The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. The nucleus is where eukaryotes store their genetic information.
What are the differences between the structure of DNA in eukaryotic nuclei and that in bacteria quizlet?
Are DNA and chromosomes the same thing?
DNA (deoxyribonucleic acid) is the cell’s genetic material, contained in chromosomes within the cell nucleus and mitochondria. Except for certain cells (for example, sperm and egg cells and red blood cells), the cell nucleus contains 23 pairs of chromosomes. A chromosome contains many genes.
What is the relationship between DNA and chromosome?
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 does DNA form chromosomes in eukaryotic cells?
Before a eukaryotic cell divides, each chromosome duplicates, forming two identical sister chromatids joined together lengthwise with their strongest connection at the centromere. Before mitosis begins, a cell’s DNA replicates itself, making an identical copy of each chromosome.
What is the difference between histones and chromatin?
Chromatin- The complex of DNA and proteins that make up eukaryotic chromosomes; often used to refer to the diffuse, very extended form taken by chromosomes when a cell is not dividing. Histones- A small protein molecule associated with DNA and important in DNA packing in the eukaryotic chromosome.
What is the difference between histones and nucleosomes?
Histones- A small protein molecule associated with DNA and important in DNA packing in the eukaryotic chromosome. Nucleosomes- The bead-like unit of DNA packing in a eukaryotic cell; consists of DNA wound around a protein core made up of eight histone molecules.
What are nucleosomes and sister chromatids?
Nucleosomes- The bead-like unit of DNA packing in a eukaryotic cell; consists of DNA wound around a protein core made up of eight histone molecules. Sister chromatids- One of the two identical parts of a duplicated chromosome in a eukaryotic cell.
Why is the eukaryotic genome so complicated?
Much of the complexity of eukaryotic genomes thus results from the abundance of several different types of noncoding sequences, which constitute most of the DNA of higher eukaryotic cells. Introns and Exons