MEGA
Energy in Biology
Cellular respiration is a chemical process in which the bonds between atoms of food molecules and oxygen molecul…
Item EB033003: When animals build body structures, the energy-releasing chemical reaction between glucose + oxygen to produce carbon dioxide + water transfers energy to the energy-requiring reaction between amino acids to build proteins + water.
An energy transfer model shows the direction of energy transfer between two systems. Each box in the model represents a system and the thick arrow between the boxes represents the direction of energy transfer. Each box represents a chemical reaction or process that either gives off or takes in energy. Processes that give off energy are represented with a curved arrow pointing down, and processes that take in energy are represented by a curved arrow pointing up.
Which of the following transfer models illustrates how an animal gets the energy needed to build body structures?
Pre-Test
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 139 |
6–8 n = 0 |
9–12 n = 131 |
Male n = 75 |
Female n = 52 |
English n = 123 |
Other n = 7 |
||
| A. |
 |
25% | NAN% | 24% | 21% | 23% | 25% | 0% |
| B. |
 |
25% | NAN% | 24% | 25% | 23% | 25% | 14% |
| C. |
 |
36% | NAN% | 37% | 41% | 35% | 34% | 86% |
| D. |
 |
14% | NAN% | 15% | 12% | 19% | 15% | 0% |
Post-Test
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 160 |
6–8 n = 0 |
9–12 n = 150 |
Male n = 94 |
Female n = 49 |
English n = 136 |
Other n = 10 |
||
| A. |
|
27% | NAN% | 25% | 30% | 18% | 26% | 10% |
| B. |
|
21% | NAN% | 21% | 16% | 24% | 21% | 20% |
| C. |
|
21% | NAN% | 21% | 21% | 22% | 20% | 40% |
| D. |
|
31% | NAN% | 33% | 33% | 35% | 33% | 30% |