Cytochalasin D, an inhibitor of actin polymerization, also inhibits AUXIN efflux

TLS Online TPP Program

#Id: 5477

#Unit 7. System Physiology – Animal

Action potentials are propagated down the motoneuron, depolarize each adjacent region to threshold. Finally, the presynaptic terminal is depolarized, and this depolarization causes voltage-gated Ca2+ channels in the presynaptic membrane to open.

TLS Online TPP Program

#Id: 6756

#Unit 3. Fundamental Processes

Method for determining mRNA half-lives.

RNA polymerase II transcription is shut down, either by a drug or a temperature shift in strains with a temperature sensitive mutation in a Pol II gene. The levels of specific mRNAs are determined by northern blot or RT-PCR at various times following shutdown.

TLS Online TPP Program

#Id: 7236

#Unit 5. Developmental Biology

B cell

TLS Online TPP Program

#Id: 364

#Unit 1. Molecules and their Interaction Relevant to Biology

Pyruvate kinase acts in the nucleus to regulate the transcription of genes that respond to thyroid hormone. Glyceraldehyde 3-phosphate dehydrogenase moonlights both as uracil DNA glycosylase, effecting the repair of damaged DNA, and as a regulator of histone H2B transcription. 

TLS Online TPP Program

#Id: 8298

#Unit 1. Molecules and their Interaction Relevant to Biology

Lineweaver–Burk equation gives an unequal distribution of points and greater emphasis to the points at low substrate concentration that are subject to the greatest experimental error whilst the Eadie–Hofstee equation and the Hanes equation give a better distribution of points.