Question 1

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

Accepted Answer

A property that arises only when simpler components interact within a system.

Question 2

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

Accepted Answer

Gravity

Question 3

A scientist 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 type of fertilizer used

Question 4

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

Accepted Answer

Prokaryotic cells lack membrane-bound organelles, while eukaryotic cells have them.

Question 5

Which process best explains how a gene in DNA leads to the production of a protein?

Accepted Answer

Transcription followed by translation

Question 6

Which of the following best illustrates the concept of feedback regulation in biological systems?

Accepted Answer

The pancreas secreting insulin in response to high blood glucose, which lowers glucose and reduces insulin secretion

Question 7

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

Accepted Answer

Organelle → Cell → Tissue → Organ

Question 8

Which of the following is a direct result of the process of evolution by natural selection?

Accepted Answer

Populations accumulate adaptations that enhance survival and reproduction in their environment.

Question 9

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

Accepted Answer

Energy flows unidirectionally while matter cycles.

Question 10

A population of mice living on a beach has lighter fur than a population living inland. According to Darwin’s theory, what is the most likely explanation for this difference?

Accepted Answer

Lighter-furred mice were more likely to survive and reproduce on the beach, increasing the frequency of light fur alleles.

Question 11

Which of the following is an example of reductionism in biology?

Accepted Answer

Analyzing the molecular structure of DNA to understand inheritance

Question 12

Which of the following best describes the relationship between genes and proteins?

Accepted Answer

Genes encode information for building proteins.

Question 13

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

Accepted Answer

Bacteria and Archaea are both prokaryotic.

Question 14

Which of the following is the best definition of a scientific theory?

Accepted Answer

A broad explanation supported by a large body of evidence.

Question 15

Which of the following best explains why all living organisms share a common genetic code?

Accepted Answer

All organisms evolved from a common ancestor.

Question 16

A researcher observes that a certain plant grows faster when exposed to blue light compared to red light. What is the next logical step in the scientific method?

Accepted Answer

Formulate a hypothesis explaining why blue light increases growth.

Question 17

Which of the following is an example of homeostasis?

Accepted Answer

A lizard basking in the sun to raise its body temperature.

Question 18

Which of the following best describes the process of gene expression?

Accepted Answer

The conversion of DNA information into a functional product, such as a protein.

Question 19

Which of the following is a feature unique to eukaryotic cells?

Accepted Answer

Membrane-bound organelles

Question 20

Which of the following best explains why controls are important in scientific experiments?

Accepted Answer

They provide a point of reference to determine the effect of the independent variable.

Chapter 1: Biology, Evolution, and the Scientific Study of Life

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