The phrase "activity and the extent" is correct and usable in written English.
It can be used when discussing the level or degree of involvement in a particular activity or subject matter.
Example: "The research focused on the activity and the extent of social media usage among teenagers."
Alternatives: "level of activity" or "degree of involvement".
The importance of this conformational activation is illustrated by the observation that mutagenesis of Arg283 and Glu295, which are >10 Å from the active site, dramatically decreases activity and the extent of conformational activation.
Figure 7C shows the result of the simulation where an inverse relation between basal level of Lyn activity, and the extent of its activation after BCR stimulation is clearly evident.
The paper finally discusses the notion of networking as a separate form of organisation of economic activity and the extent of its applicability to biotechnology.
This study examines the relationships between reported physical activity, and the extent of perceived support for physical activity in the physical and policy environment (e.g. facilities, programmes and other opportunities), and in the social environment.
Thus, in Trial 2, the effective concentration of 16 mg Se g−1 DW was used (~235 µmol L−1) to study changes of photosynthetic activity and the extent of Se incorporation into biomass under various light intensities (250, 500 and 750 µmol photons m−2 s−1).
First, if levQ is deleted levD promoter activity is lost, whereas loss of levT reduced levD promoter activity and the extent of reduction was dependent on the carbohydrate source.
The documents provided by the BND mole reportedly included papers on a German parliamentary panel that is investigating the NSA's mass surveillance activities and the extent of German cooperation in the snooping.
The relationship between decentralization of government activities and the extent of rent extraction by private parties is an important element in the recent debate on institutional design.
There was not a direct correlation between the levels of enzymatic activities and the extent of losses of wood weight or components.
Existing studies specific to DIRB-smectite interactions have focused on the relationship between microbial activities and the extent of Fe reduction, [6, 21] microbial growth, [20] and changes to the bulk physicochemical properties of clays.
Thus, we also measured students' reports of their own emotional and behavioral engagement and disaffection in the gardens, examining the extent to which students felt they were energized and enjoying themselves during activities and the extent to which they dedicated their full thoughts and efforts to SciLG tasks.
