A) visual
<span>b) auditory </span>
<span>c) chemical </span>
<span>d) tactile </span>
It would be C. Carbohydrates, lipids, and proteins.
Why? Lipids store fat, carbohydrates regulate sugar and energy, and proteins do the functions of the cells.
Based on the 20 amino acids found in proteins, there are 6840 possible variations in a polymer composed of just three amino acids.
<h3>What are amino acids?</h3>
Amino acids are the molecules from which protein molecules are made from.
There are 20 common amino acids from which protein molecules are built up from.
The amino acids are joined one to another in the protein by peptide bonds.
In a polymer composed of three amino acids, the possible variations are calculated by permutation.
The possible variations are 20 permutation 3.
nPr = n!/(n - r)!
where n = 20 r = 3
nPr = 20!/(20 - 3)!
nPr = 6840
Therefore, there are 6840 possible variations in a polymer composed of just three amino acids.
Learn more about amino acids at: brainly.com/question/1302816
Anwser
<span>Enzymes act as catalysts that remain unmodified as they increase the rate of a chemical reaction</span>
True, because the kidneys filter out waste in most living things.
