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Item EB057001: Some of the molecules from milk a nursing infant drinks are changed into new molecules that become part of its body structures.

How does a nursing infant use the carbon-based molecules from milk to grow?

  1. Some of the molecules from milk are changed into new molecules that become part of the baby’s body structures.
  2. Some of the molecules from milk become part of the baby’s body structures, but these molecules are not changed into new molecules.
  3. The molecules from milk are all converted to energy for growth, so none of the molecules becomes part of the baby’s body structures.
  4. The molecules from milk are all converted to waste materials that leave the body, so none of the molecules becomes part of the baby’s body structures.

Pre-Test

Distribution of responses
Answer Choice
Overall
Grades
Gender
Primary Language
 
n = 277
6–8
n = 0
9–12
n = 254
Male
n = 145
Female
n = 100
English
n = 244
Other
n = 13
A. Some of the molecules from milk are changed into new molecules that become part of the baby’s body structures. 27% NAN% 27% 32% 19% 27% 23%
B. Some of the molecules from milk become part of the baby’s body structures, but these molecules are not changed into new molecules. 19% NAN% 20% 16% 27% 20% 23%
C. The molecules from milk are all converted to energy for growth, so none of the molecules becomes part of the baby’s body structures. 44% NAN% 44% 40% 48% 44% 54%
D. The molecules from milk are all converted to waste materials that leave the body, so none of the molecules becomes part of the baby’s body structures. 9% NAN% 9% 12% 6% 9% 0%

Post-Test

Distribution of responses
Answer Choice
Overall
Grades
Gender
Primary Language
 
n = 312
6–8
n = 0
9–12
n = 283
Male
n = 170
Female
n = 106
English
n = 262
Other
n = 16
A. Some of the molecules from milk are changed into new molecules that become part of the baby’s body structures. 36% NAN% 37% 37% 35% 39% 13%
B. Some of the molecules from milk become part of the baby’s body structures, but these molecules are not changed into new molecules. 18% NAN% 19% 22% 13% 18% 38%
C. The molecules from milk are all converted to energy for growth, so none of the molecules becomes part of the baby’s body structures. 37% NAN% 37% 32% 44% 36% 50%
D. The molecules from milk are all converted to waste materials that leave the body, so none of the molecules becomes part of the baby’s body structures. 8% NAN% 7% 8% 8% 7% 0%