OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Asn
|
|
|
Ser
|
|
|
Phe
|
|
|
Met
|
|
|
Tyr
|
Detailed explanation-1: -Methionine, cysteine, homocysteine, and taurine are the 4 common sulfur-containing amino acids, but only the first 2 are incorporated into proteins.
Detailed explanation-2: -Methionine and cysteine are the sulphur containing amino acids.
Detailed explanation-3: -Among all the amino acids, Cysteine is the only amino acid that contains sulfur in the side chain.
Detailed explanation-4: -Six amino acids have side chains that are polar but not charged. These are serine (Ser), threonine (Thr), cysteine (Cys), asparagine (Asn), glutamine (Gln), and tyrosine (Tyr). These amino acids are usually found at the surface of proteins, as discussed in the Proteins 2 module.
Detailed explanation-5: -Cysteine (Cys/C) is the only amino acid with a sulfhydryl group in its side chain.