Question 1

Which of the following best describes the difference between evidence and inference in the scientific method?

Accepted Answer

Evidence consists of observations and measurements, while inference is the logical conclusion drawn from evidence.

Question 2

A scientist wants to test the effect of sunlight on plant growth. She sets up two groups of plants: one group receives sunlight, and the other is kept in darkness. What is the independent variable in this experiment?

Accepted Answer

The exposure to sunlight

Question 3

Which of the following is NOT a requirement for something to be considered alive according to the seven pillars of life described by Koshland?

Accepted Answer

Ability to move

Question 4

In a controlled experiment, why is it important to keep all conditions except the independent variable constant?

Accepted Answer

To ensure that the dependent variable is not affected by other factors

Question 5

Which of the following best illustrates deductive reasoning in biology?

Accepted Answer

Starting with the general principle that all cells come from pre-existing cells and predicting that a new cell in a tissue must have arisen from another cell

Question 6

Which of the following statements about scientific hypotheses is correct?

Accepted Answer

A hypothesis is a testable explanation for an observation.

Question 7

A student claims that evolution and natural selection are synonymous. Which statement best evaluates this claim?

Accepted Answer

The claim is incorrect because evolution refers to change in populations over time, while natural selection is one mechanism that drives evolution.

Question 8

Which of the following is an example of a dependent (response) variable in a scientific experiment?

Accepted Answer

The rate of product formation in an enzyme-catalyzed reaction

Question 9

Which of the following best describes the cyclic nature of the scientific method?

Accepted Answer

Scientists may revisit and revise hypotheses and experiments based on new evidence.

Question 10

Darwin’s theory of evolution explains both the unity and diversity of life. Which statement best illustrates this concept?

Accepted Answer

Living organisms share fundamental characteristics but have diversified through adaptation to different environments.

Question 11

A scientist collects the following data on enzyme activity at different temperatures: 10°C, 20°C, 30°C, and 40°C. She observes that activity increases up to 30°C, then decreases at 40°C. What inference can she make from this evidence?

Accepted Answer

Enzyme activity peaks at an optimal temperature and decreases beyond that point.

Question 12

Which of the following is a scientific theory?

Accepted Answer

A well-supported and widely accepted explanation for a broad range of phenomena

Question 13

Which equation best represents the relationship between independent and dependent variables in a simple linear experiment?

Accepted Answer

$$y = mx + b$$

Question 14

A controlled experiment is designed to test the effect of fertilizer on plant growth. Which of the following would be the best control group?

Accepted Answer

Plants that receive no fertilizer

Question 15

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

Accepted Answer

How does temperature affect the rate of photosynthesis in plants?

Question 16

Which of the following best describes the role of data in scientific inquiry?

Accepted Answer

Data are used to support or refute hypotheses.

Question 17

Which of the following is an example of an emergent property at the cellular level?

Accepted Answer

The ability of a cell to regulate its internal environment through homeostasis

Question 18

Which statement about hypotheses is most accurate?

Accepted Answer

Hypotheses can be supported or refuted by evidence, but never absolutely proven.

Question 19

Which of the following is NOT a step in the scientific method?

Accepted Answer

Ignoring contradictory evidence

Question 20

Which of the following best explains how DNA is related to both the unity and diversity of life?

Accepted Answer

DNA provides a universal genetic code, but variations in sequences lead to diversity among organisms.

Introduction to Biology: Scientific Inquiry, Life, and the Nature of Science

Guida di studio - Domande di pratica

Study guide - Flashcard