The seed coat often contributes to the maintenance of dormancy by physically impeding the passage of water and gases to and from the embryo, by chemically inhibiting germination, and by mechanically restricting the growth of the embryo.
The presence of a tracheostomy physically impedes swallowing.
It is generally recognized that the existence of lignins in lignocelluloses restricts enzymatic saccharification by physically impeding the accessibility of cellulase to cellulose [ 10].
It is commonly assumed that the presence of lignin in biomass restricts enzymatic hydrolysis primarily by physically impeding the accessibility of cellulase to cellulose and unproductively binding cellulase.
Males engage in post-copulatory mate guarding [ 2] or block female copulatory openings to physically impede subsequent copulations [ 4] to achieve the latter.
Genetically manipulated mouse models might be used to test the hypothesis that mitochondrial proliferation, in the absence of respiratory dysfunction, can physically impede unloaded cardiomyocyte shortening.
The movement between these two states is thought to be controlled by a 'gate' which physically impedes the flow of ions in the closed state but which moves out of the way during the open state.
Subsequently, the ICLs physically impede the progress of the replication fork and transcriptional machinery causing replication stress and blocked transcription process, leading to activation of the intra-S checkpoint, and if the lesions are too extensive, induction of cell death [ 3].
The larger radicals physically impede access of the substrate to the active site.> The exact characteristics of the substrate specificity of T. molitor cathepsins are not yet known experimentally, so we performed in silico studies of their specificity.
We show that Hsp104 binds to the Aβ42 portion of AβMRF and may therefore physically impede interaction between Aβ42 and the factors that trigger degradation and disaggregation of the fusion protein.
