The low photosystem II activity in the bundle sheath also minimizes the Rubisco oxygenation reaction.

TLS Online TPP Program

#Id: 1890

#Unit 4. Cell Communication and Cell Signaling

Two distinct selection processes are required:

 • Positive selection, which selects for those thymocytes bearing receptors capable of binding self-MHC molecules, resulting in MHC restriction

• Negative selection, which selects against thymocytes bearing high-affinity receptors for self-MHC/peptide complexes, resulting in self-tolerance.

TLS Online TPP Program

#Id: 3085

#Unit 3. Fundamental Processes

Long filaments form when septum formation is inhibited, but chromosome replication is unaffected.

TLS Online TPP Program

#Id: 3029

#Unit 3. Fundamental Processes

The oriCsystem, named for the bacterial origin, basically involves the association of the DnaG primase with the protein complex at the replication fork.

TLS Online TPP Program

#Id: 6866

#Unit 3. Fundamental Processes

HP1 (heterochromatin protein 1) is one of the most important Su(var) proteins. The HP1 chromodomain binds to histone H3 that is trimethylated at lysine 9 (H3K9me3).

TLS Online TPP Program

#Id: 8345

#Unit 2. Cellular Organization