Cells commit to a new cell division at a specific point in G1 known as START or the restriction point.

TLS Online TPP Program

#Id: 9416

#Unit 11. Evolution and Behavior

A trait can evolve by sexual selection if it increases a male’s overall fitness, even if it decreases survival.

Exaggerated secondary sexual traits are favored by sexual selection because they increase male mating success.

TLS Online TPP Program

#Id: 4565

#Unit 8. Inheritance Biology

Supplementary gene interaction (9:3:4)

TLS Online TPP Program

#Id: 8675

#Unit 1. Molecules and their Interaction Relevant to Biology

Insulin activates

GluT4

Hexokinase

Glycogen Synthase

TLS Online TPP Program

#Id: 3282

#Unit 3. Fundamental Processes

In Escherichia coli,  the complex of MutS and the mismatch-containing DNA recruits MutL, a second protein component of the repair system. 

TLS Online TPP Program

#Id: 4719

#Unit 13. Methods in Biology

Molecules such as FAD (flavin adenine dinucleotide), NADH and NADþ are important coenzymes of proteins involved in electron transfer reactions (RedOx reactions). They can be conveniently assayed by using their UV/Vis absorption: 438 nm (FAD), 340 nm (NADH) and 260 nm (NADþ).