Question 1

Which of the following best describes an emergent property in biological systems?

Accepted Answer

A property that results from the arrangement and interaction of parts within a system.

Question 2

In the hierarchy of biological organization, which level immediately precedes the 'organ system'?

Accepted Answer

Organ

Question 3

A scientist wants to test the effect of a new drug on blood pressure. She randomly assigns subjects to two groups: one receives the drug, the other receives a placebo. What type of variable is the drug treatment?

Accepted Answer

Independent variable

Question 4

Which of the following statements about hypotheses is correct?

Accepted Answer

A hypothesis is a proposed explanation that can be tested.

Question 5

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

Accepted Answer

Ability to photosynthesize

Question 6

A researcher collects data on plant growth under different light conditions. She uses a bar graph to display the average height of plants in each group. What is the main advantage of using a bar graph in this scenario?

Accepted Answer

It visually compares discrete categories of data.

Question 7

Which of the following best describes the scientific method?

Accepted Answer

A flexible process involving observation, hypothesis formation, experimentation, and analysis.

Question 8

In a controlled experiment, why is it important to have a control group?

Accepted Answer

To compare the effects of the independent variable against a baseline.

Question 9

Which of the following is an example of a quantitative observation?

Accepted Answer

The plant grew 5 cm in one week.

Question 10

A scientist is testing whether fertilizer affects tomato yield. She measures the number of tomatoes produced per plant. What is the dependent variable in this experiment?

Accepted Answer

Number of tomatoes produced per plant

Question 11

Which of the following best explains why larger sample sizes increase the reliability of scientific results?

Accepted Answer

They reduce the impact of random variation.

Question 12

Which of the following is a primary source in scientific literature?

Accepted Answer

An original research article presenting new experimental data.

Question 13

Which of the following is an example of a positive control in an experiment?

Accepted Answer

A group that receives a treatment known to produce a specific effect.

Question 14

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

Accepted Answer

Observation, Hypothesis, Experiment, Conclusion

Question 15

A scientist wants to determine if a new antibiotic is effective against a bacterial infection. She treats one group of patients with the antibiotic and another group with a placebo. What is the placebo group used for?

Accepted Answer

To test the effectiveness of the antibiotic compared to no treatment.

Question 16

Which of the following best describes a theory in science?

Accepted Answer

A well-supported explanation based on a large body of evidence.

Question 17

Which of the following is an example of an ecosystem?

Accepted Answer

All living and nonliving components in a pond.

Question 18

Which of the following is a critical aspect of scientific thinking?

Accepted Answer

Evaluating evidence and questioning assumptions.

Question 19

A scientist collects data on the effect of temperature on enzyme activity. She finds that enzyme activity increases with temperature up to a point, then decreases. Which graph would best represent this relationship?

Accepted Answer

A curve that rises and then falls.

Question 20

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

Accepted Answer

The coordinated contraction of heart muscle cells to pump blood.

Chapter 1: An Introduction to the Science of Life – Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards