Comments on: biology!!!? http://www.sciencehound.org/biology-21/ Fri, 16 Sep 2011 00:01:24 +0000 hourly 1 By: Mary Alice Cullen http://www.sciencehound.org/biology-21/comment-page-1/#comment-1478 Mary Alice Cullen Thu, 22 Apr 2010 12:09:58 +0000 http://www.sciencehound.org/biology-21/#comment-1478 It's mostly a math question in its essence. These throw me off when they show up in Algebra because they're science, and vise versa.... An exponential expression thingy. I think. But here's how to do them. Or, actually, this specific one, but it's the same principle: after 3 hours there would be 64 bacteria. it doubles every half hour. 3 hours = 6 1/2 hours. so 2^6 = 64. after 12 hours there would be 16,777,216 bacteria. 12 hours = 24 1/2 hours. 2^24 = 16,777,216. Limiting factors could include inhospitable temperatures, insufficient food or space in which to grow. It’s mostly a math question in its essence. These throw me off when they show up in Algebra because they’re science, and vise versa…. An exponential expression thingy. I think. But here’s how to do them. Or, actually, this specific one, but it’s the same principle:

after 3 hours there would be 64 bacteria. it doubles every half hour. 3 hours = 6 1/2 hours. so 2^6 = 64.
after 12 hours there would be 16,777,216 bacteria. 12 hours = 24 1/2 hours. 2^24 = 16,777,216.

Limiting factors could include inhospitable temperatures, insufficient food or space in which to grow.

]]> By: milton b http://www.sciencehound.org/biology-21/comment-page-1/#comment-1479 milton b Thu, 22 Apr 2010 12:09:58 +0000 http://www.sciencehound.org/biology-21/#comment-1479 Every half hour the population of bacteria doubles, the math is simple you can do it. The two big limiting factory on bacterial growth are always food and space. Every half hour the population of bacteria doubles, the math is simple you can do it. The two big limiting factory on bacterial growth are always food and space.

]]> By: Josue http://www.sciencehound.org/biology-21/comment-page-1/#comment-1480 Josue Thu, 22 Apr 2010 12:09:58 +0000 http://www.sciencehound.org/biology-21/#comment-1480 3 hours = 64 bacteria 12 hours = 16777216 bacteria -temperature 3 hours = 64 bacteria
12 hours = 16777216 bacteria
-temperature

]]>