Item BF018005: Small molecules like amino acids can pass through capillary walls but large molecules like proteins cannot.
What molecules can pass through the walls of microscopically small blood vessels (capillaries)?
- Both small molecules like amino acids and large molecules like proteins can pass through capillary walls.
 - Small molecules like amino acids can pass through capillary walls, but large molecules like proteins cannot.
 - Large molecules like proteins can pass through capillary walls, but small molecules like amino acids cannot.
 - Neither large molecules like proteins nor small molecules like amino acids can pass through capillary walls.
 
Answer Choice  | 
				Overall  | 
				Grades  | 
				Gender  | 
				Primary Language  | 
			|||
|---|---|---|---|---|---|---|---|
|   n = 1558  | 
								6–8 n = 1000  | 
				9–12 n = 554  | 
				Male n = 745  | 
				Female n = 782  | 
				English n = 1394  | 
				Other n = 134  | 
			|
| A. | 24% | 26% | 20% | 24% | 25% | 23% | 31% | 
| B. | 47% | 42% | 55% | 47% | 47% | 48% | 33% | 
| C. | 17% | 19% | 12% | 17% | 16% | 16% | 22% | 
| D. | 12% | 12% | 12% | 12% | 12% | 12% | 14% | 

