The P1 cell develops autonomously without the presence of AB, generating all the cells it would normally make, and the result is the posterior half of an embryo.

TLS Online TPP Program

#Id: 3322

#Unit 6. System Physiology – Plant

V-class proton pumps cannot acidify the lumen of an organelle because these pumps are electrogenic.

TLS Online TPP Program

#Id: 3323

#Unit 6. System Physiology – Plant

For each H+ pumped across, a negative ion (e.g., OH− or Cl−) will be “left behind” on the cytosolic face, causing a buildup of negatively charged ions there.

TLS Online TPP Program

#Id: 3324

#Unit 6. System Physiology – Plant

These oppositely charged ions attract each other on opposite faces of the membrane, generating a charge separation, or electric potential, across the membrane.

TLS Online TPP Program

#Id: 3325

#Unit 6. System Physiology – Plant

The proton-motive force— drives the synthesis of ATP as protons flow passively back into the matrix through a proton pore in ATP synthase.

TLS Online TPP Program

#Id: 3326

#Unit 6. System Physiology – Plant

Mitochondrial ATP synthase is an F-type ATPase and also called Complex V.

TLS Online TPP Program

#Id: 3327

#Unit 6. System Physiology – Plant

ATP synthase has two components; F1, a peripheral membrane protein, and Fo, oligomycin sensitive