Amphitrichous....they have a single flagellum from both ends.
Answer:
The correct answer is: translesion.
Explanation:
Also called DNA polymerase V, the translesion polymerase is responsible for the repair of the DNA in prokaryotes like Escherichia coli.
These special enzymes repair DNA lesion during DNA replication. If the enzyme fails, the damage in the DNA can lead to the death of the cell.
Replication in prokaryotes is much more prone to errors than replication in eukaryotes, one of the reasons being this polymerase not being as effective as the polymerase in charge of repairing eukaryotic DNA, the DNA polymerase beta.
Answer:
a. Oxygen performs an essential role in the mentioned microbial cell in a manner that it takes part in the procedure of glycolysis, Krebs cycle, and electron transport chain, which eventually assists in the production of energy from food substrates and this generation of energy helps the cell to survive.
In the existence of oxygen, sugar gets dissociated through glycolysis to generate pyruvate, which again in the existence of oxygen is transformed into acetyl CoA. This moves into the Krebs cycle and gets dissociated to water and carbon dioxide generating ATP through ETC. This generation of ATP helps the cell to survive.
In low oxygen surrounding or in the absence of oxygen, some of the aerobic microbes can switch their respiratory pathway and carry on the process of fermentation and anaerobic respiration to produce energy and thrive. However, the mentioned microbial cell, which when it comes in contact with the low oxygen environment cannot carry out fermentation process and would die eventually.
b. This organism can be classified as obligate aerobes as they always need oxygen and do not possess the tendency to carry out the process of anaerobic respiration or fermentation under the absence of oxygenic environment.
Explanation:
1. cell membranes are partialy permeable, only allowing passage to some certain molecules.
2. diffusion is the movement of molecules across partially permeable membrane down concentration gradient.
3. the molecules are too big to pass through partially permeable membrane. the concentration of the molecule might be higher in the cell than in the solution/surroundings.
