Eukaryotic transcription is most often under positive regulation: A transcription factor is provided under tissue-specific control to activate a promoter or set of promoters that contain a common target sequence.

TLS Online TPP Program

#Id: 6883

#Unit 3. Fundamental Processes

Inactive X chromosome also becomes associated with PRC2 complexes, which catalyze the trimethylation of histone H3 lysine 27. This methylation results in association of the PRC1 complex and transcriptional repression

TLS Online TPP Program

#Id: 8199

#Unit 2. Cellular Organization

Lysosomes contain about 40 types of hydrolytic enzymes, All are acid hydrolases, work best at acidic pH including: proteases, nucleases, glycosidases, lipases, phospholipases, phosphatases, and sulfatases.

TLS Online TPP Program

#Id: 6009

#Unit 3. Fundamental Processes

TLS Online TPP Program

#Id: 9257

#Unit 6. System Physiology – Plant

Diurnal changes in xanthophyll content as a

function of PPFD

TLS Online TPP Program

#Id: 9513

#Unit 6. System Physiology – Plant

Bacteria frequently deploy a “quorum‐sensing” mechanism to facilitate successful colonization of plant tissue