Answer:
Endoplasmic reticulum
Explanation:
The endoplasmic reticulum makes an extensive internal system of membranes in the eukaryotic cells. It makes a system of tubes and sacs that run throughout the cytoplasm. The ER is connected to the nuclear envelop also and serves in the transport of substances and proteins throughout the cells with the help of transport vesicles. For instance, the proteins formed on the surface of rough ER are packed in vesicles that bud off from the surface of rough ER and are carried to the Golgi apparatus for processing.
Answer:
Hypothesis: If mucus production in the submucosal layer of the esophagus is insufficient, cell longevity is affected, because it interferes with the quality of connective tissue.
Explanation:
In a scientific research the hypothesis is an assumption, a possibility that will justify the purpose of the scientific research and will help in the establishment of all the steps of this research, so that it is possible to determine if the hypothesis is true or false. In other words, we can say that the hypothesis must be formulated as an assumption, before the research that will prove it or not.
An example of a hypothesis about research on the longevity of cells that line the esophagus is: "If mucus production in the submucosal layer of the esophagus is insufficient, cell longevity is affected, because it interferes with the quality of connective tissue."
It creates competition for food and other resources.
