Explanation
Normally amino acids have an "R" group connected to the center carbon. The presence of the R group means you have 4 distinct groups bonded to the carbon (amine, acid, H, and R). When you have 4 different things on a carbon that makes it chiral and gives it optical activity (stereoisomerism). With glycine the R group is actually just hydrogen, which means there are only three distinct things bound to that carbon (amine, acid, and 2 H's), hence glycine won't be chiral or show optical activity.
Oxytocin is a harmone not an enzyme.
Animals like cows need rumen microorganisms to survive. Even though cows eat grass, they can’t digest it on their own. This is because cows can’t make the enzymes needed to break down some parts of plant cells. For example, cows can’t digest cellulose. To do this, they need an enzyme called cellulase. This is why the microorganisms are so important- they produce the cellulase and other enzymes necessary to break down the parts of plant cells that the cow can’t digest.
Lysine is a base, it contains two basics groups, they are arginine and histidine
Denaturation of protiens involves the disruption and possible destruction of both secondary and tertiary structures. Since denaturation reactions not strong enough to break the peptide bonds, the primary structure (sequence of amino acids) remains the same after a denaturation process.
There are 20 naturally occurring amino acids.
Hence the maximum number of tripeptides that can be obtained = (20)3= 8000
Essential amino acids cannot be made by the body. As a result, they muct come from food. The 9 essential amino acids are : histidine, isoleucine, lrucine, lysine, methionine, phenyl alanine, theonine, tryptophain and valine.
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