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.
up vote 2 down vote. APK (Android Package) file is a file format which is created by Google. This format is one of the group members of Executable Files (similar to EXE, MST, AIR). APK file extension is in the Open Handset Alliance which is a mobile phone platform based on Linux. This file extension is especially created when using Google's Android SDK.