Question 1

Which of the following is NOT a fundamental property of life as described in the course materials?

Accepted Answer

Life is always multicellular and cannot exist as a single cell.

Question 2

A student wants to test whether adding fertilizer increases the growth of tomato plants. She sets up two groups: one with fertilizer and one without. What is the independent variable in this experiment?

Accepted Answer

The presence or absence of fertilizer.

Question 3

Which of the following best describes the role of a control group in a scientific experiment?

Accepted Answer

It is used to compare results and determine if the experimental variable caused a change.

Question 4

According to the forgetting curve, what percentage of information is typically forgotten within one hour of learning?

Accepted Answer

$$50\%$$

Question 5

Which study pattern, as shown in the diagrams, is most effective for long-term retention of information?

Accepted Answer

Spacing study sessions out over time (distributed practice).

Question 6

In the scientific method, what is the correct order of steps?

Accepted Answer

Observation, Hypothesis, Prediction, Experiment, Conclusion

Question 7

Sam wants to test if baking powder makes a cake airy and light. What should his control group be?

Accepted Answer

Cake recipe without baking powder

Question 8

Which of the following best describes a dependent variable?

Accepted Answer

The variable that responds to changes in the independent variable.

Question 9

A biologist observes that her neighbor’s tomato plants are healthier than hers. She hypothesizes that soil type is the cause. Which of the following is a prediction she could make?

Accepted Answer

If I change my soil to match my neighbor’s, my tomato plants will become healthier.

Question 10

Which of the following is an example of a hypothesis?

Accepted Answer

Adding fertilizer increases plant growth.

Question 11

Which of the following best explains why biologists use figures and graphs?

Accepted Answer

To visually explain complicated mechanisms and data.

Question 12

In a graph showing the effect of fertilizer on plant growth, which axis should represent the amount of fertilizer added?

Accepted Answer

The horizontal (x) axis

Question 13

Which of the following is NOT a recommended study practice for success in biology?

Accepted Answer

Cramming all material the night before the exam.

Question 14

A student claims that falling behind in class does not affect performance. Based on the data presented in the course, how would you respond?

Accepted Answer

Falling behind makes it harder to do well, as shown by actual student data.

Question 15

Which of the following best describes the cell in the context of life?

Accepted Answer

The cell is the smallest unit of life.

Question 16

Which of the following is a real-world example of a control group?

Accepted Answer

A group of patients receiving a placebo in a drug trial.

Question 17

Which of the following is an example of a dependent variable in a plant growth experiment?

Accepted Answer

The height of the plants measured after two weeks.

Question 18

Which of the following best describes the process of self-replication in living organisms?

Accepted Answer

The ability to produce identical copies of themselves.

Question 19

Which of the following is a key reason why it is important to seek help early in a biology course?

Accepted Answer

Because biology concepts build on each other, and confusion can compound over time.

Question 20

Which of the following best describes the relationship between independent and dependent variables in an experiment?

Accepted Answer

The dependent variable changes in response to the independent variable.

Introduction to Biology and the Scientific Method

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