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What do prokaryotic and eukaryotic cells use to turn certain genes on or off?
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∙ 11y ago
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Why do eukaryotic genes have introns but introns are absent from prokaryotic cells?
Look at the sheer amount of DNA that is contained into a eukaryotic gene (eukaryotes have more DNA to code for and so they can leave some of the DNA out, also look at the way the DNA is formed i.e. Eukaryotic genes are double stranded helixes and prokayrotic genes are a single strand of circular dna.
What makes it challenging to package gentic material in eukaryotic cells?
DNA is made up of thousands of genes. DNA is organized and packaged into structures called chromosomes. ... -A prokaryotic has a single circular molecule of DNA. What makes it challenging to package genetic material in eukaryotic cells?
Many biologist believe that having the genes of eukaryotic cells interrupted by introns?
true
What makes something complex?
because the organisms are special and sweet pickles are good.
Is chromosomes in eukaryotic plants and animals cells?
yes cromosomes are the material of the genes for myltiplication of the cells= produce new organisms
Where are ribosomes produced?
Ribosomes are made by genes in the nucleolus (which is inside the nucleus) in eukaryotic cells. In prokaryotic cells, the genes are found in the cytoplasm.
Where are the genes located?
Genes are DNA grouped together/organized on chromosomes which are found inside the nucleus of eukaryotic cells, and are found floating around in the cytoplasm as DNA in prokaryotic cells.
Do eukaryotic cells have genes?
All cells have genes
Why must certain genes in eukaryotic cells be present in multiple copies?
To produse RNA
What do the chromosomes of eukaryotic cell have more of than those of a prokaryotic cell?
Genes
Why do molecular biologists use yeast as opposed to bacteria for expressing genes of interest?
molecular biologists can avoid eukaryotic-prokaryotic incompatibility by using eukaryotic cells such as yeasts, rather than bacteria, as hosts for cloning and/or expressing eukaryotic genes of interest. source: Campbell Biology 7th edition
Why do eukaryotic genes have introns but introns are absent from prokaryotic cells?
Look at the sheer amount of DNA that is contained into a eukaryotic gene (eukaryotes have more DNA to code for and so they can leave some of the DNA out, also look at the way the DNA is formed i.e. Eukaryotic genes are double stranded helixes and prokayrotic genes are a single strand of circular dna.
The chromosomes of eukaryotic cells have more?
genes
Can prokaryotic Cells control the expression of their genes?
Yes.
What makes it challenging to package gentic material in eukaryotic cells?
DNA is made up of thousands of genes. DNA is organized and packaged into structures called chromosomes. ... -A prokaryotic has a single circular molecule of DNA. What makes it challenging to package genetic material in eukaryotic cells?
How are eukaryotes and prokaryotes the different?
Prokaryotic cells do not have a nucleus and eukaryotic cells do. The main difference to remember is that everything in a eukaryotic cell is much larger and more complex than what would be fouind in a prokaryotic cell. Bacteria is made of prokaryotic cells. Plants and animals are made of eukaryotic cells. In addition to not having a nucleus (the main difference), prokaryotes also have circular DNA while eukaryotes have linear DNA. As such, prokaryotes do not have okazaki fragments formed during DNA replication. Eukaryote genes have introns and exons while prokaryotes do not, and eukaryotes have more "junk" DNA in general.
What are the difference between a prokaryotic and eukaryotic cells?
A. Prokaryotic : Cell wall comprised of peptidoglycan Selectively permeable cytoplasmic membrane Rigid cell wall + outer membrane (Gram-neg) Protective capsule or slime layer External flagella or pili projections Single copy of chromosomal DNA; DNA is super coiled and circular Intracellular chromosomal and plasmid DNA Intracellular storage and gas vesicles (granules) Membrane bound organelles are absent Internal endospores in Clostridium and Bacillus sp. Nucleus not present 70S (cytoplasmic) ribosomes present as unbound forms B. Eukaryotic: Cell wall only present in algae (chitin) and plant (cellulose) cells Multiple copies of chromosomal DNA; DNA is linear Intracellular, membrane bound organelles present (mitochondria) Chromosomal DNA housed in nucleus 80S (larger) ribosomes present as unbound and bound forms Eukaryotic cells contain two important things that prokaryotic cells do not: a nucleus and organelles (little organs) with membranes around them. Although both eukaryotic and prokaryotic cells contain DNA, the DNA in eukaryotic cells is held within the nucleus. In prokaryotic cells, the DNA floats freely around in a unorganized manner. The organelles in eukaryotic cells allow them to perform more complex functions than prokaryotic cells, which don't have these little organs. Prokaryotic cells have a cell wall composed of peptidoglycan (amino acid and sugar). Some eukaryotic cells also have cells walls, but none that are made of peptidoglycan. The flagella in eukaryotic cells are different from the flagella in prokaryotic cells. Flagella are the structures that help cells move. The flagella in eukaryotic cells are composed of several filaments and are far more complex than the flagella in prokaryotic cells. All cells have their genes arranged in linear chains called chromosomes. But eukaryotic cells contain two (or more) copies of every gene. During reproduction, the chromosomes of eukaryotic cells undergo an organized process of duplication called mitosis.
