The pH indicator phenol red is used for monitoring the status of the medium. This will change from red at pH 7.2–7.4 to yellow or fuchsia as the pH becomes either acidic or alkaline, respectively.

TLS Online TPP Program

#Id: 7913

#Unit 2. Cellular Organization

Matrix-targeting sequences

sequences for localizing proteins to mitochondria

TLS Online TPP Program

#Id: 7371

#Unit 5. Developmental Biology

The transcription factors encoded by the pair-rule genes activate the segment polarity genes, whose mRNA and protein products divide the embryo into 14-segment-wide units, establishing the periodicity of the embryo. 

TLS Online TPP Program

#Id: 355

#Unit 1. Molecules and their Interaction Relevant to Biology

Acetyl-CoA inhibits the transacetylase component whereas NADH inhibits the dihydrolipoyl dehydrogenase component. 

TLS Online TPP Program

#Id: 1881

#Unit 10. Ecological Principles

The propagule pressure hypothesis suggests invasives produce more progeny than some native species.

TLS Online TPP Program

#Id: 3319

#Unit 6. System Physiology – Plant

The energy stored in such a gradient, termed the proton-motive force.