TLS Online TPP Program

#Id: 2728

#Unit 12. Applied Biology

Which one of the following can be used as a selection marker for developing transgenic plants?

green fluorescent protein

β-glucuronidase

β-galactosidase

hygromycin phosphotransferase

 

TLS Online TPP Program

#Id: 5884

#Unit 3. Fundamental Processes

All prokaryotic and eukaryotic DNA polymerases share the same fundamental type of synthetic activity -an antiparallel synthesis from 5’ to 3’ from a template that is 3’ to 5’. This means adding nucleotides one at a time to a 3’–OH end.

TLS Online TPP Program

#Id: 944

#Unit 5. Developmental Biology

In Sea urchin,

Sperm-activating peptides provide direction to sperm during chemotaxis.

TLS Online TPP Program

#Id: 7781

#Unit 2. Cellular Organization

A structural motif repeated several times within the Y-complex is closely related to a structure found in the COPII proteins that drive the formation of coated vesicles within cells.

TLS Online TPP Program

#Id: 5025

#Unit 3. Fundamental Processes

Bacteria have two links between replication and cell growth:

• The frequency of initiation of cycles of replication is adjusted to fit the rate at which the cell is growing. 

• The completion of a replication cycle is connected with division of the cell.