Question 1

Which of the following best describes the hierarchical organization of life from smallest to largest?

Accepted Answer

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

Question 2

Which statement correctly distinguishes prokaryotic cells from eukaryotic cells?

Accepted Answer

Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells possess both.

Question 3

In a controlled experiment testing the effect of camouflage on mouse predation, which variable is manipulated by the researchers?

Accepted Answer

The color of the mouse models (camouflaged vs. non-camouflaged)

Question 4

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

Accepted Answer

Insulin secretion decreasing as blood glucose levels fall

Question 5

Which domain includes organisms with eukaryotic cells?

Accepted Answer

Eukarya

Question 6

What is the correct binomial nomenclature for humans?

Accepted Answer

Homo sapiens

Question 7

Which of the following best explains the mechanism of evolution according to Darwin?

Accepted Answer

Natural selection acting on heritable variation

Question 8

A scientist observes that a plant grows toward light. She hypothesizes that light increases the rate of photosynthesis. Which step of the scientific method is she performing?

Accepted Answer

Forming a hypothesis

Question 9

Which of the following is a prediction derived from deductive reasoning?

Accepted Answer

If all cells contain DNA, then human cells contain DNA.

Question 10

Which of the following is NOT a requirement for a scientific hypothesis?

Accepted Answer

It must be proven true.

Question 11

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

Accepted Answer

Energy flows in one direction, entering as sunlight and exiting as heat.

Question 12

Which of the following is a correct application of the binomial system of nomenclature?

Accepted Answer

Genus species (italicized), e.g., $$Pan\ troglodytes$$

Question 13

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

Accepted Answer

Acceleration of contractions during childbirth

Question 14

A student claims that supernatural forces caused her experiment to fail. Why is this claim not scientific?

Accepted Answer

It cannot be tested or falsified.

Question 15

Which of the following statements about scientific theories is correct?

Accepted Answer

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

Question 16

Which of the following is the correct order of taxonomic classification from broadest to most specific?

Accepted Answer

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

Question 17

Which of the following best illustrates the concept of adaptation in natural selection?

Accepted Answer

A population of finches develops beak shapes suited to available food sources over generations.

Question 18

Which equation best represents the first law of thermodynamics as it applies to biological systems?

Accepted Answer

$$\Delta E = Q - W$$

Question 19

A scientist replaces the bulb in a flashlight and it works. What can she conclude?

Accepted Answer

The hypothesis that the bulb was burnt out is supported, but not proven.

Question 20

Which of the following is an example of inductive reasoning in science?

Accepted Answer

Observing that all tested plants grow toward light and concluding that all plants grow toward light.

Chapter 1: Evolution, the Themes of Biology, and Scientific Inquiry

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