The pH range for an acid is pH < 7 with the strength increasing downwards so an acid with pH 1 is much stronger than one with 6.
The range for a Base is pH > 7 with the strength increasing with number thus a substance with pH 14 is much stronger than a substance of pH 8.
With that said, <span>
A solution with a pH of 13 would be a
STRONG BASE (alkali since it is in solution).
Additional: I attached a pH scale so that at any point in time you can check the pH scale and match it to the substance given and tell whether it is a strong or weak base or acid.
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Answer:
It means that the cell membrane only lets some molecules/substances through the phospholipid bilayer.
Explanation:
The right option is; b. exocytosis
These digestive enzymes are excreted from pancreas cells by exocytosis.
Exocytosis is a form of active transport in which a cell exports molecules such as enzymes, and neurotransmitters out of the cell by using vesicular transport. Exocytosis is used by many cells because it allows the movement of large molecules through the cell membrane. Cells of the pancreas synthesize digestive enzymes that help in digestion through exocytosis.