Raspberry Lemon Loaf

1 3/4 cups all-purpose flour

1/2 cup granulated white sugar

2 teaspoons baking powder

1 teaspoon baking soda

1/2 teaspoon salt

1 cup low-fat, lemon- flavored yogurt

1/4 cup vegetable or canola oil

1 large egg

2 large egg whites

1 teaspoon finely grated lemon zest

1 cup fresh raspberries (or frozen)