Question 1

Which of the following best describes the scientific method?

Accepted Answer

A process involving observation, hypothesis formation, experimentation, data analysis, and conclusion.

Question 2

A scientist observes that a certain enzyme works faster at higher temperatures. She proposes that increasing temperature increases enzyme activity. What step of the scientific method is she performing?

Accepted Answer

Forming a hypothesis

Question 3

Which of the following is an example of a scientific law?

Accepted Answer

The total energy of the universe remains the same ($$\Delta E_{universe} = 0)$$

Question 4

What is the main difference between a scientific theory and a scientific law?

Accepted Answer

A theory explains observations, while a law describes a consistently observed phenomenon.

Question 5

Which assumption is NOT part of the scientific method?

Accepted Answer

Supernatural forces control natural events.

Question 6

A researcher collects data from an experiment and uses statistical analysis to interpret the results. Which step of the scientific method is this?

Accepted Answer

Data analysis

Question 7

Which of the following best illustrates the Second Law of Thermodynamics?

Accepted Answer

A hot cup of coffee cools down to room temperature over time, increasing the entropy of the system.

Question 8

If a scientist's experiment does not support her hypothesis, what is the most appropriate next step?

Accepted Answer

Revise the hypothesis based on the data and test again.

Question 9

Which of the following statements about scientific theories is TRUE?

Accepted Answer

They are explanations that have been thoroughly tested and are verifiable and reproducible.

Question 10

A student claims that the Third Law of Thermodynamics means that all motion stops at absolute zero. Which of the following best corrects this misconception?

Accepted Answer

The Third Law states that as temperature approaches absolute zero, entropy approaches a constant minimum, not that all motion stops.

Question 11

Which of the following best demonstrates the dynamic process of science?

Accepted Answer

Scientists continually ask questions and seek new answers as new evidence emerges.

Question 12

A group of scientists in different countries perform the same experiment and obtain similar results. Which assumption of the scientific method does this support?

Accepted Answer

People perceive natural events in similar ways.

Question 13

Which of the following is the correct sequence of steps in the scientific method?

Accepted Answer

Observation, Hypothesis, Experiment, Data Analysis, Conclusion

Question 14

A new drug is tested in a clinical trial. The results are analyzed and published. Other scientists repeat the experiment and get the same results. What does this demonstrate about scientific knowledge?

Accepted Answer

Scientific knowledge is verifiable and reproducible.

Question 15

Which of the following best describes entropy as it relates to the Second Law of Thermodynamics?

Accepted Answer

Entropy is a measure of disorder, and energy systems tend to increase entropy over time.

Question 16

A scientist claims to have discovered a new law of nature after a single experiment. Why is this claim scientifically invalid?

Accepted Answer

Scientific laws must be verified extensively over time and accepted by the scientific community.

Question 17

Which of the following is an example of applying the First Law of Thermodynamics in a biological system?

Accepted Answer

A human converts chemical energy from food into kinetic energy for movement, but the total energy remains constant.

Question 18

A student is designing an experiment to test the effect of light on plant growth. Which of the following would be the best hypothesis?

Accepted Answer

If plants are exposed to more light, then they will grow taller.

Question 19

Which of the following best explains why scientific knowledge is always subject to change?

Accepted Answer

New evidence and observations can lead to revised or new explanations.

Question 20

A researcher concludes that a new medication is effective after analyzing the data from a clinical trial. Which step of the scientific method is this?

Accepted Answer

Conclusion

Introduction to Science and the Scientific Method for Anatomy & Physiology

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