HiSET Science Practice
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HiSET Science Practice
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25 Questions

1. Mark and Nancy both take three measurements of the length of a pencil that is 15.1 cm. Mark records 15.0, 15.0, and 15.1 cm. Nancy records 15.1, 15.2, and 15.2 cm. Which of the following statements is true about Mark and Nancy's measurements?
2. A total solar eclipse can be observed only by viewers located:
3. Which the following nucleotide sequences of an mRNA molecule specifies the end of a protein chain?
4. The mitochondria:
5. All living organisms on Earth utilize:
6. Which of the following statements about galaxies is true?
7. The major advantage of sexual reproduction over asexual forms is that:
8. Which part of the cell serves as the control center for all cell activity?
9. Isotopes are two atoms of the same element that have different _____. They have the same number of _____, but a different number of _____.
10. Of the following, the blood vessel containing the least-oxygenated blood is:
11. The Earth's magnetic field protects it from:
12. The structure of the Milky Way galaxy is best described as:
13. Which of the following animals displays the greatest fitness?
14. A normal human sperm must have:
15. Which of the following structures contains DNA?
16. The majority of weather phenomena occur in which part of the Earth's atmosphere?
17. Which of the following do catalysts alter to control the rate of a chemical reaction?
18. Which of the following describes one responsibility of the integumentary system?
19. How does meiosis differ from mitosis?
20. During the anaphase of mitosis, the _________________, originally in pairs, separate from their daughters and move to the opposite ends (or poles) of the cell.
21. The process of changing from a liquid to a gas is called ________?
22. Chromosomes are located within the:
23. What are groups of cells that perform the same function called?
24. The pilot of an eastbound plane determines wind speed relative to his aircraft. He measures a wind velocity of 320 km/h, with the wind coming from the east. An observer on the ground sees the plane pass overhead, and measures its velocity as 290 km/h. What is the wind velocity relative to the observer?
25. The cell depicted is a(n):

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