Brassinosteroids, like gibberellins, suppress photomorphogenesis in the dark.

TLS Online TPP Program

#Id: 3043

#Unit 3. Fundamental Processes

The gap is filled by DNA polymerase I; pol A mutants fail to join their Okazaki fragments properly. 

TLS Online TPP Program

#Id: 4014

#Unit 7. System Physiology – Animal

Membrane ion channels that play important roles in generation of the action potential:

T (transient) channels 

L (long-lasting) channels Voltage gated potassium ion channel

TLS Online TPP Program

#Id: 3198

#Unit 3. Fundamental Processes

Errors in replication and damage to DNA have two consequences;
One is, of course, the introduction of permanent changes to the DNA (mutations), which can alter the coding sequence of a gene or its regulatory sequences.
The second consequence is that some chemical alterations to the DNA prevent its use as a template for replication and transcription

TLS Online TPP Program

#Id: 9580

#Unit 11. Evolution and Behavior

Devonian - First amphibian and first seed plant appear, and insects Mass extinction late in period

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#Id: 6378

#Unit 2. Cellular Organization

The lac operon has three paradoxes

if the operon is in a repressed state, how does the inducer enter the cell to start the process of induction

 If the operon is in a repressed state, how Repressor is removed with allolactose 

 How is allolactose synthesized in Repressed state Answer is Leaky Expression