Windows 7 Supports BitLocker Encryption?

Or, Does BitLocker work on Windows 7?

Or, How to use BitLocker on Windows 7 professional?

Or, BitLocker Drive Encryption option not found in Windows 7 Professional OS.

Descriptions:

BitLocker is not supported on Windows 7 Professional Operating System. To use BitLocker encryption, you must be using Windows 7 Ultimate or Windows 7 Enterprise.

You may refer below KB of Microsoft to know more about about BitLocker compatibility and configurations prerequisites.

https://technet.microsoft.com/en-us/library/dd835565(v=ws.10).aspx