What are the reactants of cellular respiration?
a) atp and water
b) sugar and oxygen
c) nadph and hydrogen
d) carbon dioxide and water

Hi, Xodanielaa!
B)Sugar and oxygen
Glucose and oxygen are the reactants of cellular respiration!
Sugar=glucose.
I hope this helps;)

B) would be the right one! since sugar (glucose) broken down to provide energy for respiration.
whereas D) the reactants are  for photosynthesis! 
:)

A serving size is the amount of food that you should eat. It’s determined by how nutritional a food is. If it is healthy and has less calories, it’s serving size would be larger than if it was unhealthy will more calories. Serving sizes are not the same for every food because each food has its own nutritional values and calories.