I think the correct answer from the choices listed above is option C. Plasmids are small DNA molecules within a cell that are important for bacteria because t<span>hey help in reproduction , antibiotic resistance, virulence and competition with other bacteria.</span>
<span>The immune system is a network of cells . Tissue,and organs that help defend the body.
Hope I helped! Have a great one!
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Answer:
Pepsinogen is produced by chief cells and is activated by hydrochloric acid secreted by parietal cells.
Explanation:
Pepsinogen is a proenzyme produced in the chief cells (that are located in the stomach lining) that, when gets activated, is transformed into pepsin - a peptidase with the function to degrade proteins into amino acids.
The reason why pepsinogen is released inactive is that it would break down all of the cell's proteins because of its proteolytic nature. For this reason, it is released as a proenzyme and gets activated when reaches the acidic environment provided by the hydrochloric acid secreted by the parietal cells, also in the stomach lining.
Anaphylaxis is a severe, potentially life-threatening allergic reaction. It can occur within seconds or minutes of exposure to something you're allergic to, such as peanuts or bee stings.
