Today's violence was a sign of the growing escalation in the West Bank as Israel's search for the three Jewish seminary students entered its second week. Israel has alleged the three were abducted by the Islamic militant Hamas, but has offered no proof.
Over the past week, thousands of Israeli troops have searched hundreds of locations in the West Bank and arrested close to 300 Palestinians, many of them from the militant Hamas group.
In one raid, in the town of Dura near Hebron, Palestinian youths threw stones at soldiers, drawing army fire. A hospital official said 15-year-old Mohammed Dodeen was killed by a bullet in the chest.
The army also opened fire during a raid in the Qalandiya refugee camp, where three Palestinians were seriously wounded, said an official at a hospital in the nearby city of Ramallah. He said one was in the intensive care unit and two were in serious condition.
The army confirmed soldiers used life fire, saying troops were responding to life-threatening situations.
It said soldiers were engaged in sporadic confrontations during today's raids. It said Palestinians threw home-made explosives, firebombs, fireworks and stones. In Qalandiya, a soldier was lightly hurt by a grenade thrown at troops, the army said.