This is the content of the pop-over!
  
Exam Edge Dark Logo Exam Edge Dark Logo
Business
Healthcare
Education
World


Recent Searches
Try searching for

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



** Sample images, content may not apply to your exam **

The best test prep involves studying both the subject matter and the exam itself! Read on for CLEP Natural Science FAQs and other test information.

Our practice tests are designed to help you master both the subject matter and the art of test-taking. Created to mimic the real exam, our practice tests feature:

  • Instant access to your online practice tests - available 24/7
  • Timed, untimed, and "study guide" modes
  • Detailed explanations for each question
  • 10 online practice exams - That's 1,200 unique questions

Not ready to purchase our complete practice tests yet? Start with a CLEP Natural Science FREE Practice Test first!

Excellent

  
170 reviews


Select Quantity

Buy one or save big with a Multi Test Value Pack for the CLEP Natural Science exam.

All transactions
secured and encrypted
All prices are
in US dollars
Get Instant Online Access Now!

Additional test information
Back To General Exam Info

Why should I use Exam Edge to prepare for the CLEP Natural Science Exam?


FAQ's for Exam Edge CLEP Natural Science practice tests

We have ten great reasons why Exam Edge is the #1 source on the internet when it comes to preparing for CLEP Natural Science test:

  • Comprehensive content: Exam Edge's CLEP Natural Science practice tests are created specifically to prepare you for the real exam. All our CLEP Natural Science practice test questions parallel the topics covered on the real test. The topics themselves are covered in the same proportions as the real test too, based on outlines provided by the College Level Examination Program in their CLEP Natural Science test guidelines.

  • Realistic practice: Our CLEP Natural Science practice exams are designed to help familiarize you with the real test. With the same time limits as the real exam, our practice tests enable you to practice your pacing and time management ahead of test day.

  • Detailed explanations: As you complete your practice tests, we show you which questions you answered correctly and which ones you answered incorrectly, in addition to providing you with detailed step-by-step explanations for every single CLEP Natural Science practice exam question.

  • Performance insights: After you complete a practice test, we provide you with your raw score (how many you answered correctly) and our estimate of the CLEP Natural Science score you would have received if you had taken the real test.

  • Ease of access: Because all our practice tests are web-based, there is no software to install. You can take CLEP Natural Science practice exams on any device with access to the internet, at any time.

  • Flexible use: If you must pause while taking one of our practice tests, you can continue right where you left off. When you continue the test, you will start exactly where you were, and with the same amount of time you had remaining.

  • Thousands of unique questions: We offer 10 different online practice exams with 1,200 unique questions to help you prepare for your CLEP Natural Science !

  • Low cost: The cost of ordering 5 practice tests is less than the cost of taking the real CLEP Natural Science test. In other words, it would be less expensive to order 5 practice tests than to retake the real CLEP Natural Science exam!

  • Our trusted reputation: As a fully accredited member of the Better Business Bureau, we uphold the highest level of business standards. You can rest assured that we maintain all of the BBB Standards for Trust.

  • Additional support: If you need additional help, we offer specialized tutoring. Our tutors are trained to help prepare you for success on the CLEP Natural Science exam.

What score do I need to pass the CLEP Natural Science Exam?

To pass the CLEP Natural Science test you need a score of 50.

The range of possible scores is 20 to 80.

How do I know the practice tests are reflective of the actual CLEP Natural Science ?

At Exam Edge, we are proud to invest time and effort to make sure that our practice tests are as realistic as possible. Our practice tests help you prepare by replicating key qualities of the real test, including:

  • The topics covered
  • The level of difficulty
  • The maximum time-limit
  • The look and feel of navigating the exam
We have a team of professional writers that create our CLEP Natural Science practice test questions based on the official test breakdown provided by the College Level Examination Program. We continually update our practice exams to keep them in sync with the most current version of the actual certification exam, so you can be certain that your preparations are both relevant and comprehensive.

Do you offer practice tests for other College Level Examination Program subjects?

Yes! We offer practice tests for 5 different exam subjects, and there are 65 unique exams utilizing 5750 practice exam questions. Every subject has a free sample practice test you can try too!
CLEP Biology Practice Tests
CLEP Chemistry Practice Tests
CLEP Mathematics Practice Tests
CLEP Natural Science Practice Tests
CLEP Spanish Practice Tests

To order full-length tests, or take a sample test, for a different subject: Click on ' Name on the Exam Name' You will be take to the orders page

How do I register for the real College Level Examination Program?

For up-to-date information about registration for the College Level Examination Program, refer to the College Level Examination Program website.

CLEP Natural Science - FAQ Sample Questions

One way to think of pKa values is that they represent the pH at which a functional group is protonated or not. Consider the amino acid lysine shown with its various pKa values. At what pH is the molecule maximally protonated?

Correct Answer:
1


to understand when the amino acid lysine is maximally protonated, it's important to consider the ph in relation to its pka values. the pka value of a molecule is indicative of the ph at which half of the species is deprotonated (loses a proton) and the other half remains protonated. lysine has three key functional groups each with a different pka: the alpha-carboxyl group (pka ≈ 2.2), the alpha-amino group (pka ≈ 9.1), and the side chain amino group (pka ≈ 10.5).

at very low ph values, all these groups accept protons due to the high concentration of h+ ions in the solution. as the ph of the solution increases and approaches each pka value, the respective groups begin to lose protons. at a ph lower than the lowest pka (around 2.2 for the carboxyl group), all the groups will be fully protonated because the ph is below the pka of all functional groups. this means the carboxyl group is in the form of –cooh, and both the alpha-amino and the side chain amino groups are in the form of –nh3+.

therefore, to find the ph at which lysine is maximally protonated, we look for a ph value that is below the lowest pka of the amino acid. in the case of lysine, since the lowest pka is about 2.2, a ph significantly lower than this, such as ph 1, guarantees that all functional groups (carboxyl, alpha-amino, and side chain amino groups) are in their protonated forms. thus, at a ph of 1, lysine is maximally protonated with its carboxyl group as –cooh and both amino groups as –nh3+.