TLS Online TPP Program

#Id: 8127

#Section 2: General Biology

β-Carotene is the precursor of vitamin A1.
Oxidation at C-15 converts retinol to the aldehyde, retinal, and further oxidation produces retinoic acid, a hormone that regulates gene expression. 

TLS Online TPP Program

#Id: 8202

#Section 3: Genetics, Cellular and Molecular Biology

Most of the lysosome membrane proteins, are highly glycosylated, which helps to protect them from the lysosome proteases

TLS Online TPP Program

#Id: 2232

#Section 3: Genetics, Cellular and Molecular Biology

De novo genes -New Genes in organisms ranging from yeast to humans that did indeed originate from noncoding DNA,

TLS Online TPP Program

#Id: 8027

#Section 2: General Biology

UV absorption

TLS Online TPP Program

#Id: 8057

#Section 2: General Biology

Cysteine, tryptophan, and methionine are not common amino acids: together, they constitute approximately 5 percent of the amino acids in a typical protein. Four amino acids—leucine, serine, lysine, and glutamic acid—are the most abundant amino acids, constituting 32 percent of all the residues in a typical protein.