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Eukaryotic plasmids are small, circular DNA molecules found in the cytoplasm of eukaryotic cells. They often contain genes that provide benefits to the cell, such as antibiotic resistance or the ability to produce certain proteins. Plasmids can replicate independently of the cell's chromosomal DNA and are commonly used in genetic engineering and research.
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What is the small ring of DNA in bacteria?
Bacteria generally have one (and only one) circular chromosome. However, they can also contain smaller rings of DNA called plasmids. These plasmids are generally not essential to cellular functions, but serve a variety of purposes. For example, they can serve as cloning vectors.
A component of bacteria that are often used in biotechnology are?
Plasmids are a common component of bacteria used in biotechnology. They are circular molecules of DNA that can be engineered to contain specific genes for various biotechnological applications. Plasmids are easily manipulated and can be used to introduce new genetic information into bacteria for the production of proteins, enzymes, or other desired products.
What is the similar features that originated in a shared ancestor?
Homologous structures are features that originated in a shared ancestor, such as the bones in the limbs of vertebrates. These features may have different functions in modern organisms but have similar underlying structures due to their common ancestry.
What are the evolutionary relationships between prokaryotic and eukaryotic cells?
Mitochondria and chloroplasts have prokaryote-like features. For example, although most of the DNA in eukaryotic cells resides in the nucleus, both mitochondria and chloroplasts have DNA molecules in their inner compartments. Mitochondrial and chloroplastic ribosomes are similar to the ribosomes of prokaryotes. The endosymbiont theory proposes that eukaryotic organisms evolved from prokaryotic ancestors; this idea supports the notion that organelles evolved from prokaryotic organisms that originally lived inside larger cells, eventually losing the ability to function as autonomous organisms
Why do plasmids contain a gene for antibiotic resistance?
Plasmids contain antibiotic resistance genes because these genes provide a survival advantage to the bacteria in the presence of antibiotics. Bacteria can pick up plasmids with antibiotic resistance genes through horizontal gene transfer, allowing them to survive in environments with antibiotic exposure. This is a common mechanism for bacteria to acquire resistance traits and poses a challenge for antibiotic treatment.
What features is common to prokaryotic and eukaryotic cells?
cell membranes
What features are common to eukaryotic cells?
Some common features of eukaryotic cells include membrane-bound organelles, a nucleus that houses DNA, cytoskeleton for structural support and movement, and the ability to undergo mitosis or meiosis for cell division.
Do all microbes have plasmids?
No, not all microbes have plasmids. Plasmids are small, circular pieces of DNA that are separate from the microbial genome. While plasmids are common in many bacteria, they are not present in all microbes.
What do all eukaryotic have in common?
they are both equalThey ALL have DNA. (:All eukaryotic cells have a few things in common. The most common thing they have in common is structures.
Why have no operons been found in eukaryotic cells?
Operons are not common in eukaryotic cells because eukaryotic genes are typically regulated individually by diverse mechanisms such as transcription factors, enhancers, and silencers. Eukaryotic gene expression is more complex and often involves tissue-specific regulation, post-transcriptional modifications, and chromatin remodeling, which are not typical features of prokaryotic operons.
Microscopic organisms exhibiting some common features found only in animals?
Microscopic organisms exhibiting some common features found only in animals. Some of them include locomotion, feeding and using their structures for various functions.
What is the source of most plasmids used in genetic engineering?
plasmids are circular chains of DNA found in bacteria. genetic engineers remove the plasmids out of the bacteria and use enzyme to cut them where they want it cut. after they manipulate the plasmid, they reinsert into the bacteria to observe the changes that were made.The bacteria is usually the source of most of the plasmids that are used in genetic engineering.
Are vacuoles eukaryotic?
They are common to both.They are in prokariyotes too
Prokaryote and eukaryotic cells generally have in common?
Ribisomes
Do typhus cells have plasmids?
Typhus, caused by Rickettsia bacteria, does not involve typical "typhus cells," as these bacteria are obligate intracellular parasites. Rickettsia species do possess plasmids, although they are not as common or well-studied as those found in other bacteria. Plasmids in Rickettsia can carry genes that contribute to their virulence and adaptation to host environments. Thus, while Rickettsia may have plasmids, the term "typhus cells" is not applicable in the traditional sense.
Do all clinicaly isolated e.coli must be having plasmid?
Not all clinically isolated Escherichia coli (E. coli) strains possess plasmids. While many pathogenic strains, particularly those associated with virulence or antibiotic resistance, often carry plasmids, there are also strains without plasmids that can cause disease. Plasmids are more common in certain types of E. coli, such as those in the Enterobacteriaceae family, but they are not a universal feature of all isolates. Therefore, the presence of plasmids varies among different E. coli strains.
What is the small ring of DNA in bacteria?
Bacteria generally have one (and only one) circular chromosome. However, they can also contain smaller rings of DNA called plasmids. These plasmids are generally not essential to cellular functions, but serve a variety of purposes. For example, they can serve as cloning vectors.
