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TLS Online TPP Program

#Id: 8871

Until Mitotic CDKs is not active, the activatory protein phosphatase, Cdc25, is phosphorylated, bound and inhibited by phosphoserine/threonine-binding protein 14-3-3.

#Unit 2. Cellular Organization #Steps in cell cycle, regulation and control of cell cycle #Part B Pointers
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TLS Online TPP Program

#Id: 5276

#Unit 7. System Physiology – Animal

When the L-type calcium channels become inactivated at about the same time, greatly increased numbers of potassium channels open.
TLS Online TPP Program

#Id: 5277

#Unit 7. System Physiology – Animal

Large quantities of positive potassium ions diffuse out of the SA node.
TLS Online TPP Program

#Id: 5278

#Unit 7. System Physiology – Animal

Potassium channels remain open for another few tenths of a second, with resultant excess negativity inside the fiber; this process is called hyperpolarization.
TLS Online TPP Program

#Id: 5279

#Unit 7. System Physiology – Animal
TLS Online TPP Program

#Id: 5280

#Unit 7. System Physiology – Animal

The effects of the autonomic nervous system on heart rate are called  chronotropic effects.
TLS Online TPP Program

#Id: 5281

#Unit 7. System Physiology – Animal

Positive chronotropic effects are increases in heart rate.