Question 1

Which of the following best describes the smallest unit of life?

Accepted Answer

A cell, because it can carry out all life processes independently.

Question 2

Which of the following is NOT a component of the scientific method?

Accepted Answer

Proof

Question 3

A scientist wants to test the effect of sunlight on plant growth. She sets up two groups: one receives sunlight, the other does not. What is the independent variable in this experiment?

Accepted Answer

Exposure to sunlight

Question 4

Which statement about scientific theories is correct?

Accepted Answer

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

Question 5

Which of the following is a property shared by all living things?

Accepted Answer

Ability to reproduce

Question 6

Which domain of life includes organisms with cells that lack a nucleus?

Accepted Answer

Bacteria

Question 7

In a controlled experiment, why is a control group necessary?

Accepted Answer

To compare results and determine the effect of the independent variable

Question 8

Which of the following best illustrates the theme 'structure and function are related' in biology?

Accepted Answer

The shape of red blood cells allows them to carry oxygen efficiently.

Question 9

Which of the following is an example of the transfer and transformation of energy and matter in living systems?

Accepted Answer

A plant absorbing sunlight and converting it to chemical energy during photosynthesis.

Question 10

Which statement about evolution is correct?

Accepted Answer

Evolution explains the diversity and unity of life.

Question 11

Natural selection can best be described as:

Accepted Answer

The process by which individuals with advantageous traits survive and reproduce more successfully.

Question 12

Which of the following is a unifying theme of biology?

Accepted Answer

Life depends on the flow of information.

Question 13

A student claims that a scientific hypothesis must be proven true. Which of the following best corrects this misconception?

Accepted Answer

A hypothesis must be testable and falsifiable, but it is never proven true beyond all doubt.

Question 14

Which of the following best describes an observational study?

Accepted Answer

A study where the researcher observes and records data without intervention.

Question 15

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

Accepted Answer

$y = mx + b$

Question 16

Which of the following is NOT one of the three domains of life?

Accepted Answer

Protista

Question 17

A biologist is studying the interconnectedness of living systems. Which scenario best illustrates this concept?

Accepted Answer

A bee pollinating flowers, which helps plants reproduce and provides food for the bee.

Question 18

Which of the following is a correct statement about the scales of life?

Accepted Answer

Organs are made up of tissues.

Question 19

Which of the following is a real-world example of the flow of information in living systems?

Accepted Answer

DNA being transcribed into RNA, which is then translated into proteins.

Question 20

Which of the following statements about the scientific method is correct?

Accepted Answer

The results of an experiment are used to support or refute the hypothesis.

General Biology: Foundations, Scientific Method, and Unifying Themes

Study Guide - Practice Questions

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