Each DNA helicase moves along ssDNA in a defined direction. This property is referred to as the polarity of the DNA helicase. DNA helicases can have a polarity of either 5’->3’ or 3’->5’.

TLS Online TPP Program

#Id: 9705

#Unit 4. Cell Communication and Cell Signaling

The receptors for yeast α and a mating factors are coupled to the same trimeric G protein.

TLS Online TPP Program

#Id: 8586

#Unit 2. Cellular Organization

Inside the nucleus, SUN proteins bind to the nuclear lamina or chromosomes.

TLS Online TPP Program

#Id: 2525

#Unit 13. Methods in Biology

The PCR consists of three defined sets of times and temperatures, termed steps

denaturatio

Annealing 

extension

TLS Online TPP Program

#Id: 9583

#Unit 11. Evolution and Behavior

Triassic - First dinosaurs and mammal, Mass extinction near end of period

TLS Online TPP Program

#Id: 5634

#Unit 7. System Physiology – Animal

Rods 

Have low acuity or resolution

are sensitive to low-intensity light

receptors for night vision (scotopic vision)