Question 1

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

Accepted Answer

A property that arises from the arrangement and interaction of parts within a system, such as photosynthesis occurring only in an intact chloroplast.

Question 2

Which of the following is NOT one of the five unifying themes of biology?

Accepted Answer

Homeostasis

Question 3

A scientist observes that a certain plant species grows taller in sunlight than in shade. She hypothesizes that sunlight increases the rate of photosynthesis, leading to more growth. Which step of the scientific method is she performing?

Accepted Answer

Forming a hypothesis

Question 4

Which of the following statements about feedback mechanisms is correct?

Accepted Answer

Negative feedback reduces the initial stimulus, helping maintain homeostasis.

Question 5

In a controlled experiment investigating mouse coloration, which of the following is the dependent variable?

Accepted Answer

The rate at which mice are preyed upon

Question 6

Which of the following best illustrates the relationship between structure and function in biology?

Accepted Answer

The elongated shape of a nerve cell allows it to transmit electrical impulses over long distances.

Question 7

Which of the following is an example of inductive reasoning?

Accepted Answer

After observing that the sun rises in the east every morning, you conclude that the sun always rises in the east.

Question 8

Which of the following best describes the role of DNA in living organisms?

Accepted Answer

DNA contains the genetic instructions for the development, functioning, and reproduction of all living organisms.

Question 9

Which of the following is a correct application of the concept of natural selection?

Accepted Answer

A population of bacteria exposed to antibiotics over time becomes dominated by antibiotic-resistant individuals.

Question 10

Which of the following best explains why energy flows through an ecosystem rather than being recycled?

Accepted Answer

Some energy is lost as heat during each energy transfer, as described by the second law of thermodynamics: $$ \Delta S_{universe} \u003e 0 .$$

Question 11

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

Accepted Answer

Molecule, organelle, cell, tissue, organ, organism, population, community, ecosystem, biosphere

Question 12

Which of the following statements about scientific theories is TRUE?

Accepted Answer

A scientific theory is broader in scope than a hypothesis and is supported by a large body of evidence.

Question 13

Which of the following is an example of positive feedback in biological systems?

Accepted Answer

During childbirth, the release of oxytocin increases contractions, which in turn stimulates more oxytocin release.

Question 14

Which of the following best describes the difference between science and technology?

Accepted Answer

Science seeks to understand natural phenomena, while technology applies scientific knowledge for practical purposes.

Question 15

A researcher is studying the effect of a new fertilizer on plant growth. She sets up two groups: one receives the fertilizer, and the other does not. What is the independent variable in this experiment?

Accepted Answer

The application of the new fertilizer

Question 16

Which of the following is an example of deductive reasoning?

Accepted Answer

If all organisms are made of cells, and humans are organisms, then humans are made of cells.

Question 17

Which of the following best explains why reductionism is useful in biology?

Accepted Answer

It allows scientists to study complex systems by breaking them down into simpler components, such as analyzing the molecular structure of DNA to understand inheritance.

Question 18

Which of the following is a real-world example of how evolution explains both the unity and diversity of life?

Accepted Answer

All living organisms use DNA as their genetic material, but the specific sequences of DNA vary greatly among species.

Question 19

Which of the following best describes the relationship between science and society?

Accepted Answer

Science and technology are interdependent, with scientific discoveries leading to technological inventions that impact society.

Introduction to Biology: Themes and Scientific Inquiry

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