Nutrients are present in all the fruits but in different quantities. Hence, it is essential to be aware of the nutritional value of fruits before we add them to our health routine. Green apple vs Lemon Nutrition will help you choose the best fruit among the two. Carbs in Green apple and Lemon are 13.81 g and 9.30 g respectively. The protein content of Green apple and Lemon is 0.30 g and 1.10 g. Protein to carb ratio of any fruit must be approximately 1.34. Protein to carb ratio of Green apple is 0.02 and in Lemon, it is 0.12. Nutritional value of fruits is incomparable to other food items. They provide all the vital nutrients required for proper functioning of our body.