Question 1

Which of the following is NOT considered a fundamental characteristic of living organisms?

Accepted Answer

They can survive indefinitely without acquiring energy or elements.

Question 2

A scientist observes that a certain type of mold only appears in food that has been exposed to air. Which step of the scientific method is the scientist performing if they propose that 'mold spores in the air cause food spoilage'?

Accepted Answer

Formulating a hypothesis

Question 3

Which of the following best describes a scientific theory?

Accepted Answer

A rigorously tested and widely supported explanation for a broad set of observations

Question 4

In Pasteur's experiment testing the 'all-cells-from-cells' hypothesis, what was the key variable manipulated?

Accepted Answer

Exposure of the broth to air

Question 5

Which of the following statements correctly distinguishes between correlation and causation?

Accepted Answer

Causation means that one event directly produces another, while correlation means two events occur together but may not be related.

Question 6

A group of ants with artificially lengthened legs (stilts) overshoot their nest when returning from a food source. What does this experimental result support?

Accepted Answer

Ants estimate distance by counting steps and stride length.

Question 7

Which of the following is an example of a null hypothesis in a study examining the effect of class attendance on student grades?

Accepted Answer

There is no effect of class attendance on a student's final grade.

Question 8

A researcher finds a strong positive correlation between the number of ice creams sold and the number of drowning incidents in a city. What is the most scientifically accurate conclusion?

Accepted Answer

There is a spurious correlation; both may be related to a third variable such as temperature.

Question 9

Which of the following best describes the process of science?

Accepted Answer

A systematic process involving observation, hypothesis formation, experimentation, and refinement of ideas.

Question 10

Which of the following is a key difference between primary and secondary scientific literature?

Accepted Answer

Primary literature is peer-reviewed and presents original research, while secondary literature summarizes scientific consensus from multiple studies.

Question 11

Which of the following is an example of a real-world application of the scientific method?

Accepted Answer

A doctor observes a pattern of symptoms, hypothesizes a disease, tests with lab work, and refines the diagnosis based on results.

Question 12

Which of the following best explains why the cell theory is considered a unifying theory in biology?

Accepted Answer

It is supported by a wide body of evidence and explains that all living things are composed of cells.

Question 13

A student claims that because organic food sales and autism rates have both increased over the past decade, one must cause the other. What scientific principle does this claim ignore?

Accepted Answer

The principle that correlation does not imply causation.

Question 14

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

Accepted Answer

Observation, hypothesis, experiment, data analysis, conclusion

Question 15

In the ant experiment, which group served as the control group?

Accepted Answer

Ants with normal legs (no modification)

Question 16

Which of the following is a characteristic of a good scientific hypothesis?

Accepted Answer

It is testable and falsifiable.

Question 17

A scientist wants to test if a new fertilizer increases plant growth. Which of the following would be the best experimental design?

Accepted Answer

Apply the fertilizer to one group of plants and compare their growth to a group that does not receive the fertilizer.

Question 18

Which of the following equations best represents the relationship between variables in a simple linear correlation study?

Accepted Answer

$$y = mx + b$$

Question 19

Which of the following is NOT a step in peer review of scientific literature?

Accepted Answer

Immediate publication without review

Question 20

Which of the following best describes why scientific knowledge is continuously refined?

Accepted Answer

Because new observations and experiments can lead to improved or revised explanations.

The Process of Science in Biology: Characteristics of Life and Scientific Inquiry

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