Yes, this is often the case, depending on the type of aircraft you are using. Generally speaking, when you start a flight in a modern aircraft, the engine, avionics, and other systems will come to life in readiness for your flight.
Here are some of the steps you should consider when starting up your flight:
Ensure that the seating and controls are set up properly.
Check your instruments and avionics to make sure they are in working order.
Put on your headset and ensure that all communication systems are connected and functioning.
Turn on the engine and check the gauges to make sure all systems are in working order.
Check the weather forecast and adjust the settings of your aircraft accordingly.
Perform any pre-flight checks and calibrations that are necessary to ensure the aircraft is safe and ready to fly.
Remember that different aircraft have different systems and processes for pre-flight checks, so make sure you read your owner’s manual for full details.
For more details on pre-flight checks, please see this article: https://www.avia-clinic.com/blog/the-basics-of-preflight-checks-for-an-aircraft/