Why do functions not work when I call them?

Projects Programming
3

W1KOK:
void loop() {

//digitalWrite(nose, HIGH);
turnNoseOn;

delay(500);

//digitalWrite(nose, LOW);
turnNoseOff;

delay(500);
}

Function calling in C requires () even if there are no arguments. Use:

 turnNoseOn(); 
turnNoseOff();