The endoplasmic reticulum is only one component of a cell. 1  The following cell structures can also be found in a typical animal eukaryotic cell: 2  Centrioles - cylindrical groupings of microtubules found in animal cells but not plant cells. They help to organize spindle fibers during cell division.
Android application package (APK) is the package file format used by the Android operating system for distribution and installation of mobile apps and middleware. The files that contain the .apk file extension store the files that are needed to run a single Android application on an Android mobile device.
Definition of pK. pK is a negative logarithmic scale of any rate constant. One of the most important examples of pK is pK a, the scale of relative acid strength. pK a is the negative log of the acid dissociation constant (pKa=-log([A-][H+]/[HA])).The Henderson-Hasselbalch equation relates pK a and pH to the relative concentrations of an acid and conjugate base in solution (pH=pKa+log([A-]/[HA])) .ne of the most important examples of pK is pK a, the scale of relative acid strength.