Entry Exam Category: High School Equivalency Exams
Course: General Education Development (GED)
Exam: GED Science and Practice Test
Practice Question
Extract
A researcher conducted an investigation about how the human body changes during exercise. The researcher's procedure is outlined below.
Experimental Procedure:
1. Observe and record the body temperature, breathing rate, and heart rate of a test subject at rest.
2. The subject jumps rope for 10 minutes.
3. Every two minutes, the researcher records the body temperature, breathing rate, and heart rate of the test subject.
4. Repeat procedure with additional subjects.
Experimental Procedure:
1. Observe and record the body temperature, breathing rate, and heart rate of a test subject at rest.
2. The subject jumps rope for 10 minutes.
3. Every two minutes, the researcher records the body temperature, breathing rate, and heart rate of the test subject.
4. Repeat procedure with additional subjects.
Which hypothesis is suitable for this investigation?
Answer Choices
- A: Body temperature, breathing rate, and heart rate depend on the health of the subject.
- B: Many of the body's systems respond to exercise.
- C: Body temperature, breathing rate, and heart rate increase with exercise.
- D: Subjects at rest have better health than subjects that exercise.
Correct Answer: C
Rationale: The procedure measures body temperature, breathing rate, and heart rate during exercise, directly testing if they increase.