A. The firewall in a car or truck.
B. The pasta strainer i use to make macaronni and cheese.
C. A condom.
D. The great wall of china.
2007-03-01 08:44:31 · 4 answers · asked by judgemartiniz 5 in Science & Mathematics ➔ Biology
This question rocks socks.
2007-03-01 08:50:10 · update #1
A, C, and D are all impenetrable barriers. In order for something to penetrate the blood brain barrier, it has to be lipid soluble, and smaller than 500 u. While I don't think the strainer is a great example, because it doesn't address solubility of substances crossing the barrier, it's the best aswer you have.
So, the answer is B
2007-03-01 08:53:58 · answer #1 · answered by iammsblue 2 · 0⤊ 0⤋
Pasta collander. You might not think so from some of what you find on this site, but ordinarily the BBB lets through things like oxygen and glucose pretty darned freely.
2007-03-01 08:51:45 · answer #2 · answered by Anonymous · 0⤊ 0⤋
B
2007-03-01 10:31:42 · answer #3 · answered by Anonymous · 0⤊ 0⤋
B
2007-03-01 09:05:36 · answer #4 · answered by Diamond in the Rough 6 · 0⤊ 0⤋