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Oksanka [162]
3 years ago
13

How is viral reproduction different from that of cell-based organisms?

Biology
1 answer:
uranmaximum [27]3 years ago
3 0
Viruses cannot reproduce independently; cell based organisms can reproduce independently.
This is the difference.
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g protein-activated inwardly rectifying potassium channels mediate depotentiation of long-term potentiation
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Long-term potentiation (LTP) is considered a cellular correlate of learning and memory. The presence of G protein-activated inwardly rectifying K(+) (GIRK) channels near excitatory synapses on dendritic spines suggests their possible involvement in synaptic plasticity. However, whether activity-dependent regulation of  channels affects excitatory synaptic plasticity is unknown. In a companion article we have reported activity-dependent regulation of GIRK channel density in cultured hippocampal neurons that requires activity oF receptors (NMDAR) and protein phosphatase-1 (PP1) and takes place within 15 min. In this study, we performed whole-cell recordings of cultured hippocampal neurons and found that NMDAR activation increases basal GIRK current and GIRK channel activation mediated by adenosine A(1) receptors, but not GABA(B) receptors. Given the similar involvement of NMDARs, adenosine  receptors, and PP1 in depotentiation of LTP caused by low-frequency stimulation that immediately follows LTP-inducing high-frequency stimulation, we wondered whether NMDAR-induced increase in GIRK channel surface density and current may contribute to the molecular mechanisms underlying this specific depotentiation. Remarkably, GIRK2 null mutation or GIRK channel blockade abolishes depotentiation of LTP, demonstrating that GIRK channels are critical for depotentiation, one form of excitatory synaptic plasticity.

Learn more about receptors here:

brainly.com/question/11985070

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8 0
2 years ago
External DNA is assimilated by a cell
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I think it’s d sorry if I’m wrong
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3 years ago
A nurse co worker who uses passive aggressive communication
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What happens when hydrogen ions combine with hydroxide ions
s2008m [1.1K]
  Hydrogen ion, or H-, creates water when combined with a hydroxide ion, OH+.
 
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I hope that I helped but if this still makes no sense, or if I haven't explained it as well, then please don't hesitate to ask further questions. Thank you.
 
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Explanation:

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