Question

How many molecules of CO2 are needed to generate one molecule of glucose?

A. 2
B. 3
C. 4
D. 5
E. 6

Answer 1

Six molecules of carbon dioxide (CO2) combine with six molecules of water (H2O) in the presence of sunlight to produce one molecule of glucose (C6H12O6) and six molecules of oxygen (O2).

Step-by-step explanation:

The equation provided shows that six molecules of carbon dioxide (CO2) combine with six molecules of water (H2O) in the presence of sunlight to produce one molecule of glucose (C6H12O6) and six molecules of oxygen (O2). This can be seen in the balanced equation for photosynthesis, which shows that six carbon dioxide molecules combine with six water molecules in the presence of sunlight to produce one glucose molecule and six oxygen molecules. Conversely, in cellular respiration, one molecule of glucose reacts with six molecules of oxygen to yield six molecules of CO2 and six molecules of H2O.Therefore, the answer is option E, 6.