They also exert a global effect on the biosphere because the balance of components of the Earth's atmosphere depends to a great extent on the photosynthetic activities of some plankton.
A continuing rise in greenhouse gases, notably carbon dioxide, due to human activity is a major contributing factor to the record warm year along with a strong El Nino developing in the Pacific Ocean – a periodic, natural variation in sea-surface temperatures that can exert a global impact on the weather.
Halpin Tsai and percolation model analyses of the results suggest that the crystalline regions exert a global influence on the elastomer structure.
At the molecular level, the reward signal is postulated to be a neurotransmitter such as dopamine, which exerts a global modulatory action on prefrontal synaptic efficacies, either via volume transmission or via targeted synaptic triads.
Although HIV-1 does not exert a global control over the activity of the cellular RNAi pathway, regulatory events triggered by viral infection and replication can result in the up- or down-regulation of the expression of numerous miRNAs [22], [23] and we expect that this plays an important role in shaping the outcome of viral infection.
This observation has led to the suggestion that sugars may exert a global control on amino acid metabolism (Matt et al., 1998).
These results indicate that mitotic nuclei lacking integrated centrosomes exert a global negative control over mitotic progression, and that there exists an endoduplication pathway that can be triggered to generate additional centrosomes.
These data indicate that while TIMP1, TIMP2 and TIMP3 exert a global impact altering the overall structure and function of the LV myocardium, the function of TIMP4 appears to be localized to the infarcted myocardium.
7 Some transcription factors can exert a global influence on gene expression and cell phenotype in the liver, including members of the PPAR and CEBP transcription factor families and regulators of the circadian clock (e.g., CLOCK/BMAL) involved in control of hepatic metabolism and bile synthesis.
This includes MYCN exerting a more global effect on transcription by influencing states of chromatin structure [11], as well as the recruitment of methyltransferase DNMT3a to the c-MYC-MIZ1 complex [25].
