In prokaryotes, the circular chromosome
What is the difference between prokaryotic and eukaryotic chromosomes 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 major differences between prokaryotic and eukaryotic chromosomes?
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.
What is one difference between a bacterial chromosome and a eukaryotic chromosome?
What is the major difference between bacterial chromosomes and eukaryotic chromosomes?
Bacteria have a single circular chromosome whereas eukaryotes have several linear chromosomes
.
How does the structure of a prokaryotic chromosome differ from the structure of a eukaryotic chromosome?
How do the structure and location of a prokaryotic chromosome differ from that of a eukaryotic chromosome?
A prokaryotic chromosome is circular and is attached to the inside of the cell membrane
. Eukaryotic chromosomes are rod-shaped, have histones and nonhistone proteins, and are found in the nucleus.
What is the main reason why eukaryotes have linear chromosomes?
In general, the factors which led to the evolution of linear chromosomes in eukaryotes are not well understood.
One potential selective pressure in favor of linear chromosomes relates
to the size of an organism’s genome: linear chromosomes may make transcription and replication of large genomes easier.
What are the two main components of eukaryotic chromosomes?
Centromeres and telomeres
are two essential features of all eukaryotic chromosomes.
What are the two major macromolecules found in chromosomes?
DNA and histone proteins
are packaged into structures called chromosomes.
How many chromosomes do prokaryotes have?
Most prokaryotic cells have just
one chromosome
, so they are classified as haploid cells (1n, without paired chromosomes).
Which is not true for prokaryotic chromosomes?
Prokaryotes do not contain nucleus or other membrane bounded organelles
. The term “prokaryotes” actually means “before nucleus”. Chromosome is stored in a special area called nucleoid. … However, prokaryotes do not contain histones (with a few exceptions).
Which chemical makes up most of a chromosome?
Each chromosome is made of
protein
and a single molecule of deoxyribonucleic acid (DNA).
How many chromosomes are in prokaryotic and eukaryotic cells?
Always two to many chromosomes per cell
. Eukaryotic chromosomes are larger than that of prokaryotes. Prokaryotic chromosome contains a covalently closed circular DNA (cccDNA).
Do prokaryotes have DNA?
Most prokaryotes carry a small amount of genetic material in the form of a single molecule, or chromosome,
of circular DNA
. The DNA in prokaryotes is contained in a central area of the cell called the nucleoid, which is not surrounded by a nuclear membrane.
What is the structure of a prokaryotic chromosome?
In prokaryotes,
the circular chromosome is contained in the cytoplasm in an area called the nucleoid
. In contrast, in eukaryotes, all of the cell’s chromosomes are stored inside a structure called the nucleus. Each eukaryotic chromosome is composed of DNA coiled and condensed around nuclear proteins called histones.
What are chromosomes made up?
A chromosome is made up of
proteins and DNA organized into genes
. Each cell normally contains 23 pairs of chromosomes.
Where is DNA in eukaryotic cells?
The nucleus
is particularly important among eukaryotic organelles because it is the location of a cell’s DNA.
