In E. coli., DNA polymerases IV and V are involved in allowing replication to bypass certain types of damage and are called error-prone polymerases

TLS Online TPP Program

#Id: 7545

#Unit 6. System Physiology – Plant

GAI and RGA proteins normally act as repressors of gibberellin responses. Gibberellin acts indirectly through an unidentified signaling intermediate, which is thought to bind to the regulatory domains of the GAI and RGA Proteins. 

TLS Online TPP Program

#Id: 1768

#Unit 4. Cell Communication and Cell Signaling

Factors that promote tolerance rather than stimulation

a. High doses of antigen

b. Long-term persistence of antigen in the host

c. Intravenous or oral introduction

TLS Online TPP Program

#Id: 2146

#Unit 9. Diversity of Life Forms

Homoplasy is similarity arrived at via independent evolution.

TLS Online TPP Program

#Id: 7770

#Unit 2. Cellular Organization

The inner nuclear membrane contains proteins that act as binding sites for chromosomes and for the nuclear lamina.

TLS Online TPP Program

#Id: 10324

#Unit 4. Cell Communication and Cell Signaling

PD-1 has a structure similar to CTLA-4 and when activated negatively regulates T-cell function by inducing apoptosis of activated T cells.