Polar bears are listed in red as they are belong to Endangered Species. These species are gonna extincting due to gradual changes by environmental factors.
The functions that both the nerve cells and muscle cells
have in common are the following;
-
Both cells are excitable
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They both experience voltage difference in the
cell membrane
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The cell membrane of both of cells has electrochemical
impulses
A river that comes from rain, glaicers etc would be a good example of fresh water rivers. Cause the water is coming from something that is most likely been unthouched by man or has been filterd and cleaned from minerals in the ground.
The statement which best explains why Pepsin will not break down starch is that enzymes only work for specific substrates.
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What is an Enzyme?</h3>
This is referred to as a biological catalyst which helps to speed the rate of chemical reaction in the body by lowering the activation energy needed to start it up. it is also proteinous and can be denatured by heat and other substance such as chemicals.
They are also substrate specific which means they can't act on any type of substance. For example enzyme such as amylase acts on only starch while pepsin acts on only protein.
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