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CLEP Natural Science Practice Tests & Test Prep by Exam Edge - Review



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CLEP Natural Science - Reviews


   Excellent
Based on 170 reviews

Brenda H.


"I just passed the CLEP Math test on my first try! I was able to get six college math credits because of your practice tests.It would have cost me over $2000 if I didn't pass the CLEP and had to take those college classes. Thank you so much!"

Micheal S.


"Just wanted to send you a quick note to thank you for your wonderful practice test. I purchased a 10 test bundle for my daughter. She passed with a 57 on her first try."

Somi V.


"Your practice CLEP Math tests really helped worked. Before I found your website, I failed the real test by 4 points. After taking your practice tests and studying all of your explanations, I passed the real test by 5 points! I told all my friends about your website. Thank you!"

Sally


"I have Clepped out of 12 credit hours. Your practice test have made the process seem easy!"



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Exam Edge is an industry leader in online test prep. We work with institutional partners to offer a wide array of practice tests that will help you prepare for your big exam. No matter how niche your field of interest might be, we are here to help you prepare for test day.



See why our users from 154 countries love us for their exam prep! Including 170 reviews for the CLEP Natural Science exam.

Exam Edge is an industry leader in online test prep. We work with institutional partners to offer a wide array of practice tests that will help you prepare for your big exam. No matter how niche your field of interest might be, we're here to help you prepare for test day.

   Excellent -- Based on 170 reviews

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CLEP Natural Science - Test Reviews Sample Questions

A DNA molecule is unwound and is being replicated. What is the sequence of the new DNA molecule if the original DNA molecule is 5’-AGGTACCT-3’?

Correct Answer:
5’-aggtacct-3’


dna replication is a fundamental process in which the dna molecule unwinds and each strand serves as a template for the formation of a new complementary strand. to answer the question about what the sequence of the new dna molecule would be if the original dna molecule is 5’-aggtacct-3’, we need to understand the base pairing rules and the orientation of dna strands.

dna strands are antiparallel, meaning one strand runs in the 5' to 3' direction and the complementary strand runs in the 3' to 5' direction. each nucleotide in dna consists of a sugar, a phosphate group, and a nitrogenous base. the bases pair specifically according to the rules where adenine (a) pairs with thymine (t) and guanine (g) pairs with cytosine (c).

given the original dna molecule 5’-aggtacct-3’, the complementary strand, which must be antiparallel, would run in the 3' to 5' direction. to find the sequence of this strand, we apply the base pairing rules: - a pairs with t - g pairs with c - t pairs with a - c pairs with g

therefore, the complementary sequence to 5’-aggtacct-3’ running in the 3' to 5' direction would be 3’-tccatgga-5’. however, during dna replication, each of the original strands serves as a template for a new strand that is synthesized in the 5' to 3' direction. this means the new strand complementary to 3’-tccatgga-5’ would be synthesized as 5’-aggtacct-3’.

as a result, the sequence of the new dna molecule synthesized during replication, using the original strand 5’-aggtacct-3’ as the template, would indeed be 5’-aggtacct-3’. this sequence is identical to the original strand due to the specific base-pairing rules and the antiparallel nature of dna strands. this is an interesting property of palindromic sequences in dna, where the sequence reads the same forwards and backwards when considering base pairing.