1.) A dipeptide containing valine and lysine has a net charge of _____ at pH 7.0
ID: 205411 • Letter: 1
Question
1.) A dipeptide containing valine and lysine has a net charge of _____ at pH 7.0
a.) 0 b.) -1 c.) +1 d.) -2 e.) +2
2.) A fusion protein can be synthesized to carry a specific tag, which is useful in identifying the proteins in various experiments. Fusion proteins with the FLAG epitope bind to specific anti-FLAG antibodies and carry this extra sequence: Asp-Tyr-Lys-Asp-Asp-Asp-Asp-Lys. At a pH of 7.0 the amino acids that would be charged in FLAG are: (select all that apply)
Asp, Glu, Lys, Tyr
3.) A membrane glycoprotein
a.) Has a covalently attached carbohydrate
b.) Cannot interact with the cytoskeleton
c.) Undergoes rapid flip flop
d.) Is also known as a raft
4.) A peptide built from three amino acids must have
a.) Three side chains
b.) Three carboxylate groups
c.) Three amino groups
d.) Three peptide bonds
5.) A protein built from 12 identical polypeptide chains
a.) Is encoded by a single gene
b.) Can mutate 12 times faster than a protein with one chain
c.) Must be an extracellular protein
d.) Can carry out 12 discrete functions
Explanation / Answer
Dear student,
Ans1:
Ans3: (a)
Ans2:
Following will have charge at pH 7: Asp, glu, lys.
A membrane glycoprotein
Has a covalently attached carbohydrate.
Ans:
4.) A peptide built from three amino acids must have
a.) Three side chains.
Ans 5:
a.) Is encoded by a single gene.
C) +1 is the net chargeRelated Questions
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