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.

TLS Online TPP Program

#Id: 8097

#Section 2: General Biology

Dipalmitoylphosphatidylcholine (DPPC) is the major lipid of lung surfactant, the protein–lipid mixture that is essential for normal pulmonary function.

TLS Online TPP Program

#Id: 8330

#Section 3: Genetics, Cellular and Molecular Biology

TLS Online TPP Program

#Id: 9197

#Section 3: Genetics, Cellular and Molecular Biology

Stabilized natural selection

Favor intermediate phenotype but eliminate lower and higher-grade phenotype

It introduced homogeneity in the population

Exp - clutch size of birds that lay too many or too few eggs per nest have lower fitness values than do those that lay an intermediate number of eggs

TLS Online TPP Program

#Id: 8653

#Section 3: Genetics, Cellular and Molecular Biology

Degradation of Sic1 is induced by its phosphorylation by G1/S phase CDKs.

TLS Online TPP Program

#Id: 10349

#Section 2: General Biology