Typical apples contain 84% water, 14% carbohydrates and 0.5% fat, a total of 98.5% content in the apple while the rest are possibly some fibers like the skin and solids that cannot be eaten such as seeds. To calculate the calorie content of the apple on the basis of 255 g, know first the weight of carbohydrates and fats in the apple and find their contribution to energy burned and water cannot be burned since it does not contain a carbon atom
Carbohydrate content : ((255 g*0.14)* 4 cal/g = 142.9 cal
Fat content : ((255 g*0.005)*9 cal/g = 11.475 cal
Total: 154.375 cal on a 255 g apple
For Patient A since they have been Vaccinated, the immune system will already know what the virus looks like and train itself to combat that specific strain of infection and be able to combat it immediately.
Person B will have to go through the process of the white blood cells combating, T cells, B cells, Macrophages, and getting sick since their body doesn't know how to combat it, after the infection the body will keep a save of the strain for later use.
The answer is D i think lol
