Neurons generally have four important zones:

A dendritic zone, where multiple local potential changes generated by synaptic connections are integrated. a site where propagated action potentials are generated. an axonal process that transmits propagated impulses to the nerve endings the nerve endings, where action potentials cause the release of synaptic transmitters.

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#Unit 9. Diversity of Life Forms

They ingest and digest food (holozoic), hence they are heterotrophic. Higher forms show elaborate sensory and neuromotor systems. Majority of them are motile.

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#Unit 3. Fundamental Processes

While DnaA has a weak intrinsic activity that converts the ATP to ADP, this is enhanced by a factor termed Hda.

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#Unit 7. System Physiology – Animal

DOPA is converted to dopamine in the cytoplasm of the cells by DOPA decarboxylase (amino acid decarboxylase)

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#Unit 6. System Physiology – Plant

Two additional proteins and two histone deacetylase enzymes (HDA6 and HDA19) act as co-repressors along with the JAZ–COI1 complex and are instrumental in maintaining the chromatin in an inactive state.

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#Id: 6311

#Unit 3. Fundamental Processes

he consequences of arrest can be catastrophic if the gene being transcribed is essential as no product will be made by the arrested polymerase, and that same enzyme will cause a roadblock to other polymerases attempting to transcribe the same gene.The cell has machinery that removes the arrested polymerase and at the same time recruits repair enzymes (in particular, the endonuclease Uvr(A)BC); the repair that follows is called transcription-coupled repair. Both polymerase removal and repair enzyme recruitment are performed by a single protein called TRCF.