Question 1

Which of the following best describes the scientific method as outlined in your notes?

Accepted Answer

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

Question 2

A scientist observes that a certain plant grows faster in sunlight than in shade. According to the scientific method, what is the next logical step?

Accepted Answer

Formulate a hypothesis explaining the observation.

Question 3

Which of the following is an example of a controlled experiment?

Accepted Answer

Testing the effect of fertilizer on plant growth by keeping all other variables constant except the amount of fertilizer.

Question 4

What is the primary purpose of a control group in an experiment?

Accepted Answer

To provide a baseline for comparison with the experimental group.

Question 5

Which of the following statements about hypotheses is correct?

Accepted Answer

A hypothesis must be testable and falsifiable.

Question 6

A researcher wants to test if a new drug lowers blood pressure. What is the independent variable in this experiment?

Accepted Answer

The administration of the new drug.

Question 7

Which of the following best defines a scientific theory?

Accepted Answer

A well-supported explanation that unifies a broad range of observations.

Question 8

In a study testing the effect of temperature on enzyme activity, which is the dependent variable?

Accepted Answer

The rate of enzyme activity.

Question 9

Why is it important for experiments to be repeatable?

Accepted Answer

To ensure that results are reliable and not due to random chance.

Question 10

Which of the following is NOT a characteristic of living organisms as discussed in your notes?

Accepted Answer

Lack of organization.

Question 11

A student claims that all living things must move. Based on your notes, how should this claim be evaluated?

Accepted Answer

It is incorrect because not all living things move, but all respond to stimuli.

Question 12

Which of the following best illustrates the application of the scientific method to a real-world medical problem?

Accepted Answer

A doctor observes a pattern of symptoms, forms a hypothesis about a disease, tests treatments, and analyzes the results.

Question 13

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

Accepted Answer

Measuring the height of a plant in centimeters.

Question 14

If an experiment's results do not support the hypothesis, what should a scientist do next?

Accepted Answer

Revise the hypothesis and conduct further experiments.

Question 15

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

Accepted Answer

A hypothesis is a testable prediction, while a theory is a well-supported explanation.

Chapter 2: The Chemical Context of Life - Study Notes

Study Guide - Practice Questions