TLS Online TPP Program

#Id: 9235

#Unit 6. System Physiology – Plant

The C4 pathway, involving mesophyll cells and bundle-sheath cells, predominates in plants of tropical origin. 

TLS Online TPP Program

#Id: 6113

#Unit 3. Fundamental Processes

In Escherichia coli, MutS scans the DNA, recognizing mismatches from the distortion they cause in the DNA backbone. 

MutS has an ATPase activity that is required for mismatch repair and recruits MutL, a second protein component of the repair system. MutL, in turn, activates MutH, an enzyme that causes an incision or nick on one strand near the site of the mismatch. Nicking is followed by the action of a specific helicase (UvrD) helicase unwinds the DNA, starting from the incision and moving in the direction of the site of the mismatch, and the filled in by DNA polymerase III

TLS Online TPP Program

#Id: 8536

#Unit 2. Cellular Organization

Plant cells rely extensively on augmin-dependent microtubule branching nucleation to organize the microtubule cytoskeleton because they lack centrosomes.

TLS Online TPP Program

#Id: 3175

#Unit 3. Fundamental Processes

Each set of ter sites allows a replication fork into the termination region, but does not allow it out the other side.For example, replication fork 1 can pass through terC and terB into the region, but it cannot continue past terE, -D, and -A. This arrangement creates a "replication fork trap."

TLS Online TPP Program

#Id: 7202

#Unit 5. Developmental Biology