How does archaebacteria differ from other bacteria?
Archaebacteria differ from other bacteria in having a different cell wall structure and this feature is responsible for their survival in extreme conditions. > Cell membrane structure: the archaebacteria do not contain peptidoglycan in their wall but possess lipids in their membrane like that of eukaryotes.
What are the main differences between archaea bacteria and eukarya?
There are three domains of life: Bacteria (also known as Eubacteria), Archaea, and Eukarya. The Bacteria and Archaea are made up entirely of microorganisms; the Eukarya contains plants, animals, and microorganisms such as fungi and protists.
Can we differentiate eubacteria and archaebacteria based on cell wall structure and composition?
The cell walls of archaebacteria are distinctive from those of eubacteria. Archaebacterial cell walls are composed of different polysaccharides and proteins, with no peptidoglycan. Many archaebacteria have cell walls made of the polysaccharide pseudomurein.
Which of the following is the identification feature to differentiate archaebacteria from eubacteria?
> Option D – The cell membrane in archaebacteria is made of glycerol-ether lipid and in eubacteria it is made up of glycerol-ester lipid. Ether lipids present in the cell membrane of archaebacteria are more resistant this is why they survive in harsh conditions.
Which structure performs the function of mitochondria in bacteria?
Mesosomes perform the function of mitochondria in bacteria. This is because mesosomes are analogous to the eukaryotic mitochondria and mesosomes also help in carrying out the respiration in the bacteria.
Which one is not true for mycoplasma?
They are pleomorphic as they do not have a cell wall. They can even survive without oxygen. As the cell wall is absent the outer boundary is formed by the plasma membrane. They are not sensitive to penicillin as they do not have a cell wall and they are pathogenic in animals and plants causing pleuropneumonia disease.
Which disease is caused by mycoplasma?
Mycoplasma pneumoniae Infection The most common illness caused by these bacteria, especially in children, is tracheobronchitis (chest cold). Lung infections caused by M. pneumoniae are sometimes referred to as “walking pneumonia” since symptoms are generally mild.
Can mycoplasma survive without oxygen?
Mycoplasma spumans is a species of bacteria in the genus Mycoplasma. Mycoplasma are the smallest bacterial cells yet discovered, can survive without oxygen and are typically about 0.1 μm in diameter.
Which is correct about mycoplasma?
Mycoplasma is the simplest and the smallest of the free living prokaryotes. They were discovered in pleural fluid of cattle suffering from pleuropneumonia. They are often called PPLO (Pleuropneumonia like organisms). Due to the absence of cell wall, the organisms can change their shape and are pleomorphic.
Can mycoplasma survive?
It is significant that mycoplasmas can survive in liquid nitrogen even without cryopreservation. While mycoplasmas do not proliferate in liquid nitrogen, they are able to contaminate cell cultures stored in liquid nitrogen.
What is the genetic material in Mycoplasma?
The mycoplasma genome is typically prokaryotic, consisting of a circular, double stranded DNA molecule. The Mycoplasma and Ureaplasma genomes are the smallest recorded for any self-reproducing prokaryote (Table 37-1).
How do mycoplasma survive without a cell?
Because of the absence of cell walls, Mycoplasma have a spherical shape and are quickly killed if placed in an environment with very high or very low salt concentrations.
Is mycoplasma a virus or bacteria?
Mycoplasma is a bacteria (or germ) that can infect different parts of your body. Which body part is affected–your lungs, skin, or urinary tract, depends on which type of mycloplasma bacteria is causing your infection. All mycloplasma infections have one thing in common though.
What are the symptoms of mycoplasma?
What are the symptoms of mycoplasma infection? Typical symptoms include fever, cough, bronchitis, sore throat, headache and tiredness. A common result of mycoplasma infection is pneumonia (sometimes called “walking pneumonia” because it is usually mild and rarely requires hospitalization).
What are 2 ways bacteria cause disease?
Bacteria cause disease by secreting or excreting toxins (as in botulism), by producing toxins internally, which are released when the bacteria disintegrate (as in typhoid), or by inducing sensitivity to their antigenic properties (as in tuberculosis).
What are the major diseases related to bacterial infection?
Bacteria cause many common infections such as pneumonia, wound infections, bloodstream infections (sepsis) and sexually transmitted diseases like gonorrhea, and have also been responsible for several major disease epidemics.
What is the most common disease caused by bacteria?
Common pathogenic bacteria and the types of bacterial diseases they cause include:
- Escherichia coli and Salmonella cause food poisoning.
- Helicobacter pylori cause gastritis and ulcers.
- Neisseria gonorrhoeae causes the sexually transmitted disease gonorrhea.
- Neisseria meningitidis causes meningitis.
Which is not bacterial disease?
Note: Influenza is not categorised under bacterial disease as it is caused by a virus known as flu or influenza virus. This virus has RNA as its genome.