Science Assessment ~ Items ~ BF039008

A boy eats a sandwich for lunch. After several hours, the food is in the small intestine where it is absorbed into the body after having been chemically broken down. If we could now examine the blood in the microscopically small blood vessels (capillaries) approaching and moving away from his small intestine, what would we find?

There would be more molecules from food in the blood approaching the small intestine than in the blood moving away from the small intestine.
There would be fewer molecules from food in the blood approaching the small intestine than in the blood moving away from the small intestine.
There would be about the same number of molecules from food in the blood approaching the small intestine and in the blood moving away from the small intestine.
There would be no molecules from food in the blood approaching the small intestine and no molecules from food in the blood moving away from the small intestine. Even though molecules from food are absorbed from the small intestine into the body, they do not enter the blood.

Details
Performance
NGSS

Topic: Human Body Systems
Correct Answer: B
Misconceptions

Distribution of Responses

Chart showing distrubtion of responses for Item BF039008

Students Responding Correctly

Group	Correct	Total	Percent
Overall	1157	3211	36%
Grades
6–8	659	1992	33%
9–12	497	1206	41%
Gender
Male	606	1582	38%
Female	531	1565	34%
Primary Language
English	1051	2842	37%
Other	90	293	31%

View data table

Disciplinary Core Ideas: LS1.A In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.

Science Assessment

Item BF039008: After a boy eats a sandwich, there are fewer molecules from food in the blood approaching the digestive tract and more molecules from food in the blood moving away from the digestive tract.