Question 1

Which of the following is NOT considered a unifying theme of biology?

Accepted Answer

The supernatural origin of life

Question 2

Which of the following best describes the concept of 'emergent properties' in biological systems?

Accepted Answer

Properties that arise only when individual components interact at higher levels of organization

Question 3

A scientist is studying the effect of light on plant growth. She sets up two groups of plants: one exposed to sunlight and one kept in darkness. She measures the height of the plants after two weeks. In this experiment, what is the dependent variable?

Accepted Answer

The height of the plants

Question 4

Which of the following best illustrates the concept of homeostasis?

Accepted Answer

A human sweating to cool down when body temperature rises

Question 5

Which of the following statements about prokaryotic and eukaryotic cells is correct?

Accepted Answer

Prokaryotic cells do not have a nucleus, while eukaryotic cells do

Question 6

Which of the following is an example of a positive feedback mechanism in biology?

Accepted Answer

Blood clotting after an injury

Question 7

A researcher hypothesizes that a certain gene is responsible for antibiotic resistance in bacteria. Which of the following would be the best experimental approach to test this hypothesis?

Accepted Answer

Compare the growth of bacteria with and without the gene in the presence of antibiotics

Question 8

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

Accepted Answer

A hypothesis is a specific, testable statement, while a theory is a broad explanation supported by a large body of evidence

Question 9

Which of the following is an example of biological evolution?

Accepted Answer

A population of insects developing resistance to a pesticide over several generations

Question 10

Which of the following best describes the role of decomposers in an ecosystem?

Accepted Answer

They recycle nutrients by breaking down dead organisms

Question 11

A student claims that mixing the chemical components of a chloroplast in a test tube will result in photosynthesis. Why is this claim incorrect?

Accepted Answer

Photosynthesis requires the specific arrangement and interaction of components within the chloroplast

Question 12

Which of the following is an example of a negative feedback mechanism?

Accepted Answer

The regulation of blood sugar levels by insulin and glucagon

Question 13

Which of the following best describes the relationship between DNA, genes, and chromosomes?

Accepted Answer

Chromosomes are made of DNA, which contains genes

Question 14

Which of the following is an example of an organism responding to a stimulus?

Accepted Answer

A plant's roots growing downward due to gravity

Question 15

Which of the following best describes the difference between reductionism and systems biology?

Accepted Answer

Reductionism reduces complex systems to simpler components, while systems biology studies the interactions among those components

Question 16

Which of the following best explains why life expectancy in the United States has increased over the past century?

Accepted Answer

Advances in medical technology and public health

Question 17

In a controlled experiment, which variable is deliberately changed to test its effect?

Accepted Answer

Independent variable

Question 18

Which of the following best describes the flow of energy in an ecosystem?

Accepted Answer

Energy flows one-way from the sun to producers to consumers and is eventually lost as heat

Question 19

Which of the following is the correct order of biological organization from smallest to largest?

Accepted Answer

Molecule → Cell → Tissue → Organ → Organ system → Organism

Question 20

Which of the following best describes the role of feedback mechanisms in biological systems?

Accepted Answer

They regulate processes to maintain stability or amplify responses as needed

Themes of Biology and Scientific Inquiry: Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards