Question 1

Which of the following best describes the primary goal of science?

Accepted Answer

To investigate and understand the natural world, explain events, and use those explanations to make useful predictions.

Question 2

A scientist observes that a certain plant grows faster in sunlight than in shade. She proposes that sunlight increases the rate of photosynthesis, leading to faster growth. What is her next step according to the scientific method?

Accepted Answer

Design and conduct a controlled experiment to test her hypothesis.

Question 3

Which of the following statements about scientific hypotheses is correct?

Accepted Answer

A hypothesis must be testable and supported or refuted by empirical evidence.

Question 4

Which of the following is an example of deductive reasoning?

Accepted Answer

All birds have feathers. This animal is a bird. Therefore, it has feathers.

Question 5

Which of the following best distinguishes a scientific theory from a scientific law?

Accepted Answer

A theory explains why phenomena occur, while a law describes what happens.

Question 6

A student claims that a certain energy drink improves athletic performance. Which step would make this claim scientific?

Accepted Answer

Designing an experiment to test the effect of the drink on performance using measurable data.

Question 7

Which of the following is an example of quantitative data?

Accepted Answer

The plant grew 5 centimeters in one week.

Question 8

Why is it important for scientific investigations to be ethical?

Accepted Answer

To ensure the safety and rights of participants and the integrity of the results.

Question 9

Which of the following best describes empirical evidence?

Accepted Answer

Evidence that is observable and measurable, and yields the same results regardless of who observes it.

Question 10

A researcher wants to test the hypothesis that caffeine increases heart rate. Which of the following would be the best experimental design?

Accepted Answer

Measure the heart rates of two groups, one given caffeine and one given a placebo, under identical conditions.

Question 11

Which of the following is NOT a characteristic of science?

Accepted Answer

It is based on unchangeable beliefs.

Question 12

Which of the following best explains why science invites criticism and peer review?

Accepted Answer

To ensure that results are reliable, unbiased, and can be replicated by others.

Question 13

Which of the following is an example of qualitative data?

Accepted Answer

The solution turned blue after the chemical was added.

Question 14

A scientific law can be best described as:

Accepted Answer

A description of an observed phenomenon that does not explain why it occurs.

Question 15

Which of the following is a key difference between science and pseudoscience?

Accepted Answer

Science relies on empirical evidence and can be tested, while pseudoscience cannot be reliably tested or disproved.

Question 16

Which of the following best illustrates the use of inductive reasoning?

Accepted Answer

Observing that several birds have feathers and concluding that all birds have feathers.

Question 17

Why is it important for scientific measurements to be accurate and precise?

Accepted Answer

To ensure that results are reliable and can be replicated by other scientists.

Question 18

A group of students is testing the effect of temperature on enzyme activity. They measure the reaction rate at 10 $$ ^\circ C$$, 20 $$ ^\circ C$$, 30 $$ ^\circ C$$, and 40 $$ ^\circ C. $$What type of data are they collecting?

Accepted Answer

Quantitative data

Question 19

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

Accepted Answer

Does increasing the amount of sunlight affect the growth rate of tomato plants?

Question 20

A scientist shares her experimental results with other researchers for review. This process is important because:

Accepted Answer

It allows others to evaluate, replicate, and validate the findings, strengthening scientific knowledge.

Nature of Science: Foundations and Scientific Method in Biology

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