Answer:
The correct answer is "negative".
Explanation:
At pH 2 the net charge of the R groups of all the amino acids that comprise the peptide in question would be positive. This happens because of the high content of protons in a solution of pH 2, a value that is below the isoelectric point of all the amino acids. Since the peptide would have a positive net charge, it would migrate to the negative terminal of the gel because opposite charges attract each other.
Solar, because they have mostly sunny days and very few clouds!
15)C
16)D because the function of mitochondria is providing energy
17)B cell wall
18)C cell membrane
19)C plantae
20)B cytoplasm
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