Answer:
D 2 million years is the answer
Explanation:
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Answer:
The correct answer is: Uncontrolled release of digestive enzymes into the duodenum.
Explanation:
- SER or the Smooth Endoplasmic Reticulum is the major location in the cells where fatty acids and steroid molecules are produced.
- These fatty acid molecules form the structure of the various membranes in the cell, including the plasma membrane and organelle membrane.
- The membrane system of the cells gives them a structural integrity.
- Disruption of the SER of the pancreatic acinar cells by a toxin will prevent the synthesis of lipid molecules which forms the membranes in the cell.
- This will cause the membrane to lose its integrity, fluidity, flexibility and the ability to prevent unregulated movement of molecules across them.
- The digestive enzymes need to secreted by the pancreatic acinar cells into the duodenum only when food is available in the duodenum for digestion.
- But loss of the ability of the plasma membrane of the pancreatic acinar cells to regulate the flow of molecules across itself (due to disruption in the lipid production by SER) causes the unregulated flow of digestive enzymes out of the cells into the duodenum as soon as they get produced.
Mitochondria are postulated to have been primarily acquired via endosymbiosis.
<h3>What is endosymbiosis?</h3>
Endosymbiosis is a process in which the association of a symbiont within a host organism occurs, it had been postulated that the eukaryotic cell as it is known was due to the association of several organisms within oneself and that each of these contributed abilities differentiated within the cell, and this is how organelles such as mitochondria or chloroplasts were then obtained. This postulate is known as the endosymbiotic origin theory of eukaryotes.
Thanks to endosymbiosis, the eukaryotic cell as we know it can carry out processes such as cellular respiration or photosynthesis.
The reasons why it is believed that the mitochondria come from the process of endosymbiosis is that it has its own DNA that is different from the nuclear DNA, showing that it has a different origin from the rest of the cell and also that it has its own replication material, which is different from other cells.
Therefore, we can confirm that mitochondria are postulated to have been primarily acquired via endosymbiosis.
To learn more about endosymbiosis visit: brainly.com/question/14930259
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