Topscore BIO Test 2

[Rezdawg]

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Can someone help me out with this question...

#4 If a Eukaryotic cell has a diameter 10 times that of a bacterial cell, proportionally, how much more surface area would a eukaryotic cell have?

The answer is 100 times the surface area. This should be in the math section dammit!! 😀

Also, question 28...The first genetic material was most likely? Answer is RNA polymer. For some reason, my thinking was that DNA would be first since RNA is transcribed from DNA. I havent really found an answer in my study materials.

Thanks.

 

[dane4695]

I remember getting #4 and thinking that question was bogus. I'm assuming they want you to relate volume 4/3piR^3 with 4piR^2 , but that requires that you assume the cell is completely spherical, which is far from true. If you use that method you should get the right answer, but I don't like that question, especially since one of the answers is "cannot determine".

As far as RNA polymers, I recall reading in schaums, perhaps under the evolution or origin of life section where it stats that RNA was the first genetic material... so that's correct.

 

[Rezdawg]

Thanks Dane. Yeah, you are right, since one of the choices is "Cannot determine", I figured that it was the correct choice since we really dont know the shape of the cells. I call B.S. on that one and I will go ahead and award myself the point because the computer cheated. 😀

 

[ScottW3]

I call B.S. on that one and I will go ahead and award myself the point because the computer cheated. 😀

I used that strategy quite a bit on TS. Too bad it didn't work so well on the actual DAT. 🙂

 

[Rezdawg]

I used that strategy quite a bit on TS. Too bad it didn't work so well on the actual DAT. 🙂

AA: 22 96.1
Bio: 22 96.5
GC: 23 93.8
OC: 22 91.8
TS: 22 96.6

Oh, I'd say it worked out quite well for you. 🙂

 

[ScottW3]

but it was so much easier to say "Dumb question.....next." 😀