MEGA
Energy in Biology
The process of photosynthesis converts light energy to stored chemical energy by converting carbon dioxide plus …
Item EB020002: The reactants of photosynthesis have less energy than the products.
Photosynthesis is a chemical reaction that occurs in a plant as the sun shines on it. Which of the following graphs compares the amount of energy in the photosynthesis reaction system before the reaction occurs (only reactant molecules are present) and the amount of energy in the system after the reaction occurs (only product molecules are present)?
Pre-Test
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 120 |
6–8 n = 0 |
9–12 n = 112 |
Male n = 67 |
Female n = 41 |
English n = 106 |
Other n = 5 |
||
| A. |
 |
15% | NAN% | 15% | 22% | 5% | 15% | 0% |
| B. |
 |
28% | NAN% | 29% | 27% | 29% | 28% | 40% |
| C. |
 |
34% | NAN% | 33% | 25% | 44% | 34% | 20% |
| D. |
 |
23% | NAN% | 23% | 25% | 22% | 23% | 40% |
Post-Test
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 144 |
6–8 n = 0 |
9–12 n = 135 |
Male n = 85 |
Female n = 43 |
English n = 122 |
Other n = 9 |
||
| A. |
|
11% | NAN% | 9% | 11% | 12% | 8% | 11% |
| B. |
|
56% | NAN% | 57% | 54% | 60% | 58% | 33% |
| C. |
|
21% | NAN% | 22% | 21% | 21% | 20% | 56% |
| D. |
|
13% | NAN% | 12% | 14% | 7% | 13% | 0% |