Match the following source of thermostable DNA polymerase with proofreading (3’−5’ exonuclease) activity;

DNA Polymerase	Sources
A- Tma	i) Pyrococcus furiosus
B- Deep VentTM	ii) Pyrococcus woesi
C- Tli	iii)  Thermotoga maritima
D- Pfu	iv) Pyrococcus sp.
E- Pwo	v) Thermococcus litoralis

#Question id: 4531

#Unit 3. Fundamental Processes

Specific elements called insulators control the actions of activators. When placed between an enhancer and a promoter,

#Question id: 4532

#Unit 3. Fundamental Processes

Locus control region, or LCR,

#Question id: 4533

#Unit 3. Fundamental Processes

When multiple activators work together, they often do so synergistically. That is, the effect of

#Question id: 4534

#Unit 3. Fundamental Processes

The yeast Saccharomyces cerevisiae divides by budding: instead of dividing to produce two identical daughter cells, the so-called mother cell buds to produce a daughter cell, The HO gene is expressed only in mother cells and only at a certain point in the cell cycle,

#Question id: 4535

#Unit 3. Fundamental Processes

The activators bind—and the enhanceosome forms—in a highly cooperative manner, ensuring that all three activators must be present. The following are three ways the regulators might be binding cooperatively:

I- Through direct protein–protein interactions between them

II- By changes in the DNA caused by binding of one protein helping binding of another;

III- By the fact that the activators all interact simultaneously with the coactivator.

#Question id: 4536

#Unit 3. Fundamental Processes

The human b-interferon gene is activated in cells upon viral infection through some activators, EXCEPT one