Answer:
Explanation:
The phospholipid bilayer is also known as the cell membrane. It covers cells and regulates the transport of substances. Certain ones can pass and others cannot, depending on certain factors like size and polarity.
Smaller substances tend to diffuse or move across the membrane quite easily. However, larger molecules have a much harder time. Many depend on special proteins embedded in the membrane. These are called transport proteins and they form a channel so large molecules can still move in or out of the cell.
So, salt, water, and fats do not contribute to the movement of larger molecules, but <u>channel or transport proteins do and choice A is correct. </u>
The number of organsims at each levels, so there are more producer than herbivores, more herbivores than carnivores and so on...
In the context of protein digestion, protein breakdown into its amino acid constituents is completed by <u>proteases </u><u>produced in the small intestine</u>
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- Protein-degrading enzymes are referred to as proteases. These enzymes are produced by bacteria, fungus, plants, and mammals.
- Proteins in the body or on the skin are broken down by proteolytic enzymes.
- This may aid in digestion or the breakdown of proteins that contribute to inflammation and pain.
- The small intestine, pancreas, and stomach all manufacture protease.
- The stomach and small intestine are where the majority of chemical reactions take place.
- Pepsin is the primary digestive enzyme that targets proteins in the stomach.
- Proteases are released by the pancreas into the proximal small intestine, where they combine with proteins that have already been altered by gastric secretions and break them down into amino acids, which are then absorbed and utilized by the body as necessary.
learn more about proteases here:
brainly.com/question/24155941
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