The two types of bacteria are archaebacteria and eubacteria.
What characteristics distinguish these two groups from the other kingdoms?
These two groups are different from other kingdoms because all cells in these kingdoms are single-celled organisms whose organelles are not membrane bounds. They are also microscopically small.
What is the average size of a bacterium?
An average bacterium is about 1-2 micrometres long.
How many prokaryote species have been discovered? How many are estimated to exist?
Scientists have discovered 10 000 prokaryotic species but estimate that about 90 000 more exist.
What is a pathogen? Are all bacteria pathogenic? List some examples of bacterial diseases.
A pathogen is a bacteria or virus which causes disease, but not all bacteria are pathogenic. …show more content…
Infectious bacteria cause disease by releasing toxins. These toxins are either released during the cell’s lifetime or when the cell dies.
Use the diagram given to describe antibiotic resistance. The red cells represent bacteria resistant to antibiotics, and the green cells represent bacteria who cannot survive antibiotics. If a sample of bacteria (1), with a mixture of antibiotic resistant and non-antibiotic resistant cells, infect an organism using antibiotics, those cells who cannot survive antibiotics will die. The resistant bacteria (2) will survive and reproduce more antibiotic resistant bacteria. The new population (3) is more resistant to antibiotics, and will produce an even more antibiotic resistant population.
Why is antibiotic resistance an issue?
Antibiotic resistance bacteria do not respond to antibiotics, making antibiotics ineffective, and greatly limiting the options of disease treatment.
How long ago were Archaebacteria first discovered?
Carl Woese, a microbiologist, discovered Archaebacteria in 1977.
What are the four types of Archaebacteria (group Euryarchaeota)? List their key features including
What characteristics distinguish these two groups from the other kingdoms?
These two groups are different from other kingdoms because all cells in these kingdoms are single-celled organisms whose organelles are not membrane bounds. They are also microscopically small.
What is the average size of a bacterium?
An average bacterium is about 1-2 micrometres long.
How many prokaryote species have been discovered? How many are estimated to exist?
Scientists have discovered 10 000 prokaryotic species but estimate that about 90 000 more exist.
What is a pathogen? Are all bacteria pathogenic? List some examples of bacterial diseases.
A pathogen is a bacteria or virus which causes disease, but not all bacteria are pathogenic. …show more content…
Infectious bacteria cause disease by releasing toxins. These toxins are either released during the cell’s lifetime or when the cell dies.
Use the diagram given to describe antibiotic resistance. The red cells represent bacteria resistant to antibiotics, and the green cells represent bacteria who cannot survive antibiotics. If a sample of bacteria (1), with a mixture of antibiotic resistant and non-antibiotic resistant cells, infect an organism using antibiotics, those cells who cannot survive antibiotics will die. The resistant bacteria (2) will survive and reproduce more antibiotic resistant bacteria. The new population (3) is more resistant to antibiotics, and will produce an even more antibiotic resistant population.
Why is antibiotic resistance an issue?
Antibiotic resistance bacteria do not respond to antibiotics, making antibiotics ineffective, and greatly limiting the options of disease treatment.
How long ago were Archaebacteria first discovered?
Carl Woese, a microbiologist, discovered Archaebacteria in 1977.
What are the four types of Archaebacteria (group Euryarchaeota)? List their key features including