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CLEP Natural Sciences Exam Practice Test
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The CLEP Natural Sciences Exam contains 120 multiple-choice questions and has a 90-minute time limit. 

CLEP Natural Sciences Exam Practice Test
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25 Questions

1. Yeast is placed in a container, and culture is added. If the population size is recorded over time and the data is plotted on a graph, the curve will likely be
2. Which of the following properties of sound is determined in part by the frequency of a sound wave?
3. The general form of a double displacement reaction is
4. A snowball is thrown straight up in the air at a speed of 1.8 meters/second. How long will it take for the snowball to fall back to the ground?
5. Which of the following components of the immune system produces antibodies?
6. Which of the following terms describes the chemical reaction shown below?
P2O5 + 3H2O → 2H3PO4
7. The specific heat capacity of a metal is 2.3 Joules/g°C. If 349 Joules of heat are added to the system and the temperature of the metal increases from 19°C to 57°C, what is the mass of the metal sample?
8. Which of the following planets has an atmosphere composed of hydrogen, helium, and methane; has a rotation time of 16 hours; and has 13 known moons?
9. Which of the following layers of Earth’s atmosphere is where the coldest spot on Earth can be found?
10. If a large population of plants decreased in size due to weather conditions, populations belonging to which of the following categories would be affected first?
11. A person driving in a car travels at a speed of 45 km/hour for 4 hours. The person then turns the car around and drives in the opposite direction at a speed of 55 km/ hour for 1.5 hours. What is the car’s total displacement in kilometers?
12. The name of the cell organelle that carries out protein synthesis is
13. Which of the following would be the complementary DNA strand for the following DNA sequence: ACG?
14. The unit used to measure electricity that is defined as the electrical current due to electrons with a certain charge moving past a given point in 1 second is
15. A scientist is studying an unknown chemical compound. The scientist observes that the compound has a high melting point and dissolves in water. This compound is most likely held together by which of the following types of bonds?
16. All of the following are true of organisms that belong to the kingdom Protista EXCEPT
17. All of the following statements are true of metamorphic rocks EXCEPT
18. Which of the following is true of the elementary particles known as quarks?
I.They are also known as hadrons.
II.The different types are called flavors.
III.They are positively charged.
19. Two species of cacti in the same desert are similar in appearance. If these plant species are unrelated, the theory that BEST explains why they are similar is
20. Which of the following is true of the nucleus of an atom?
I.It has a neutral charge.
II.It is surrounded by an electron cloud.
III.It represents about one-tenth of the atom’s total size.
21. All of the following organs are part of the digestive system EXCEPT the
22. In humans, the portion of the sperm cell that has digestive enzymes that aid in penetration of the ovum is the
23. Which of the following biological classifications is more general than order and more specific than kingdom?
24. During prenatal development in mammals, which of the following forms immediately after the morula?
25. Which of the following moon phases immediately follows a first quarter moon?

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