Preheat oven to 350°
Place the Tbsp of lemon juice in the bottom of a cup measure, then fill the rest of the cup with milk for a total of 1 cup. Set aside for a few minutes.
In a mixing bowl, whisk together the whole wheat flour, AP flour, baking soda, baking powder and salt.
Add the milk mixture, sugar, egg and molasses and whisk together by hand until just combined.
Pour the mixture into a greased and floured loaf pan, (or just use the non-stick spray that has the flour in it already), and bake immediately at 350 for 50-60 mins. (It is done when toothpick comes out clean from center.)
Let it sit in the pan on a cooling rack for 15 minutes then remove the bread from the pan and let cool directly the remaining time on a cooling rack.