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.
How to Run APK Files on an Android SDK. An Android APK file contains all the open-source Java files used to set up and run the Google Android app. You can extract these files and load them into your local Android SDK, which is installed in the Eclipse application.