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.
A PUK is a security key for your phone. A Pin Unlock Key (PUK) is a code assigned to your cell phone's SIM card by your service provider. You must enter the correct six digit code in order to return the phone back to service. Your service provider can help you get the right PUK code for your SIM card. Check your online billing account to see if there is an option for resetting your SIM card. Search for Unblock SIM card or Reset SIM card.. If your service provider has this option available, follow the instructions to obtain your PUK.