TLS Online TPP Program

#Id: 2290

#Unit 3. Fundamental Processes

RNA polymerase holoenzyme binds DNA loosely at first

a. Binds at promoter initially

b. Scans along the DNA until it finds one

TLS Online TPP Program

#Id: 7270

#Unit 6. System Physiology – Plant

The binding of sugar phosphates, such as ribulose-1,5-bisphosphate, to rubisco prevents carbamylation. The sugar phosphates can be removed by the enzyme rubisco activase, in a reaction that requires ATP. The primary role of rubisco activase is to accelerate the release of bound sugar phosphates, thus preparing rubisco for carbamylation

TLS Online TPP Program

#Id: 3220

#Unit 4. Cell Communication and Cell Signaling

Direct-acting carcinogens

Highly reactive compounds that can react with and modify nucleotide bases in DNA so as to distort the normal pattern of base pairing

TLS Online TPP Program

#Id: 673

#Unit 3. Fundamental Processes

Shelterin functions to protect telomeres from DNA damage repair pathways and to regulate telomere length control by telomerase

TLS Online TPP Program

#Id: 3964

#Unit 7. System Physiology – Animal

Conducting cells are specialized muscle cells which function to rapidly spread action potentials over the entire myocardium.