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TLS Online TPP Program

#Id: 2986

In E. coli., DNA polymerase III, a multisubunit protein, is the replication polymerase responsible for de novo synthesis of new strands of DNA. 

#Unit 3. Fundamental Processes #Fidelity of replication #Part B Pointers
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TLS Online TPP Program

#Id: 4037

#Unit 7. System Physiology – Animal

Acetylcholine (ACh), released from parasympathetic nerve fibers, activates muscarinic (M2) receptors in the SA node.
TLS Online TPP Program

#Id: 4038

#Unit 7. System Physiology – Animal

activation of the M2 receptors decreases cyclic adenosine 3′,5′-monophosphate (cAMP) in the cells, and this slows the opening of Ca 2+ channels.
TLS Online TPP Program

#Id: 4039

#Unit 7. System Physiology – Animal

βγ subunit of a G protein, open a special set of K + channels. The resulting IKAch slows the depolarizing effect of Ih .
TLS Online TPP Program

#Id: 4040

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

#Id: 4041

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

#Id: 5255

#Unit 7. System Physiology – Animal

The heart consists of two kinds of muscle cells:

Contractile cells

Conducting cells