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CLEP Natural Sciences Exam Practice Test 2
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Related test: CLEP Natural Sciences Exam Practice Test 1

CLEP Natural Sciences Exam Practice Test 2
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20 Questions

1. According to the Second Law of Thermodynamics, which of the following will occur if a person holds a piece of ice in their hand?
2. An electrical system has 23 amperes of current and 5 ohms of resistance. Which of the following expressions can be used to correctly calculate its voltage?
3. All of the following taxa contain the species Pycnopodia helianthoides, the sunflower sea star. Which taxon contains the largest number of species?
4. According to the Second Law of Thermodynamics, which of the following will occur if a person holds a piece of ice in their hand?
5. Which best describes the chromosomes in metaphase of meiosis I?
6. Which organelle is found in both plant and animal cells?
7. Birds, reptiles, and dinosaurs belong to the same taxon, while mammals do not. Reptiles and dinosaurs have three-chambered hearts, while birds and mammals have four-chambered hearts. Which features are analogous?
8. Birds, reptiles, and dinosaurs belong to the same taxon, while mammals do not. Reptiles and dinosaurs have three-chambered hearts, while birds and mammals have four-chambered hearts. Which features are analogous?
9. Which describes a correct sequence of events in Earth’s history?
I First eukaryotes appear
II Atmospheric oxygen levels increase.
III First tetrapods appear
IV.Plants colonize land
10. The hormone that suppresses the growth of a plant’s side shoots is produced in the
11. An archaeologist discovers a fossil of a marine organism with a protective outer shell. The oldest this fossil could possibly be is
12. How much energy is needed to convert 5 grams of water at 35°C into steam?
13. Which organelle is found in both plant and animal cells?
14. Two fruit flies, each heterozygous for two genes, are crossed. What proportion of the offspring is expected to have one dominant and one recessive trait
15. Which hormone decreases bone density?
16. Which of the following elements would have the smallest atomic radius?
17. Which hormone decreases bone density?
18. A scientist is trying to determine whether a compound is ionic or molecular. Which of the following would be LEAST helpful in terms of making this determination?
19. Which best describes the chromosomes in metaphase of meiosis I?
20. Which of the following equations would be the BEST one to use to calculate the distance an object traveled if it was dropped and took 10 seconds to reach the ground?

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