Question 1

Which of the following best describes the primary focus of biology as a scientific discipline?

Accepted Answer

The scientific study of life and living organisms

Question 2

Which of the following is NOT a characteristic shared by all living organisms?

Accepted Answer

Ability to photosynthesize

Question 3

A scientist observes a new organism and notes that it is made of cells, can reproduce, and responds to its environment. Which property of life is the scientist still missing evidence for?

Accepted Answer

Growth and development

Question 4

Which of the following scenarios best illustrates the concept of homeostasis?

Accepted Answer

A human sweating to cool down on a hot day

Question 5

Which of the following statements about scientific theories is correct?

Accepted Answer

A scientific theory is a well-supported explanation based on a body of evidence.

Question 6

Which of the following best represents the correct order of the scientific method?

Accepted Answer

Observation, hypothesis, experiment, analysis, conclusion

Question 7

A researcher wants to test the effect of sunlight on plant growth. Which of the following is the best example of a controlled variable in this experiment?

Accepted Answer

The type of plant used in the experiment

Question 8

Which of the following is an example of a hypothesis?

Accepted Answer

If plants are given more sunlight, then they will grow taller.

Question 9

Which of the following best explains why viruses are not considered living organisms?

Accepted Answer

They cannot reproduce on their own without a host cell.

Question 10

Which of the following equations correctly represents the process of photosynthesis?

Accepted Answer

$$6CO_2 + 6H_2O \rightarrow C_6H_{12}O_6$ + 6O_2$$

Question 11

A student claims that all living things must be able to move. Which of the following best refutes this claim?

Accepted Answer

Plants are living but do not move from place to place.

Question 12

Which of the following best describes the relationship between a hypothesis and a theory?

Accepted Answer

A theory is a well-supported explanation that can arise from testing many hypotheses.

Question 13

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

Accepted Answer

Developing a vaccine to prevent disease

Question 14

Which of the following best describes the process of cellular respiration?

Accepted Answer

$$C_6H_{12}O_6$ + 6O_2 \rightarrow 6CO_2 + 6H_2O + Energy$$

Question 15

A patient is unable to maintain a stable internal body temperature. Which property of life is most directly affected?

Accepted Answer

Homeostasis

Question 16

Which of the following is the best example of adaptation in a population?

Accepted Answer

A population of insects developing resistance to a pesticide over generations

Question 17

Which of the following best describes the role of DNA in living organisms?

Accepted Answer

DNA stores genetic information necessary for growth and reproduction.

Question 18

Which of the following is an example of a multi-step scientific investigation?

Accepted Answer

Formulating a hypothesis, designing an experiment, collecting data, analyzing results, and drawing a conclusion.

Question 19

Which of the following best illustrates the concept of evolution by natural selection?

Accepted Answer

Individuals with traits better suited to their environment are more likely to survive and reproduce.

Question 20

Which of the following is a correct statement about the hierarchy of biological organization?

Accepted Answer

Organs are composed of tissues.

Introduction to Biology: The Study of Life

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