Question 1

Which of the following is NOT considered a property of life?

Accepted Answer

Spontaneous generation from non-living matter

Question 2

Which event is considered a major milestone in the history of life on Earth?

Accepted Answer

The origin of photosynthetic cyanobacteria

Question 3

Viruses differ from living organisms in that they:

Accepted Answer

Lack cellular structure

Question 4

Which of the following best describes how viruses replicate?

Accepted Answer

By hijacking the host cell's machinery to produce viral components

Question 5

Which of the following is a synapomorphy shared by all Bacteria but not Archaea?

Accepted Answer

Presence of peptidoglycan in the cell wall

Question 6

Why are Archaea important to human health and the environment?

Accepted Answer

They contribute to the human gut microbiome and play roles in biogeochemical cycles

Question 7

Which of the following statements about the three domains of life is correct?

Accepted Answer

Eukaryotes share a more recent common ancestor with Archaea than with Bacteria

Question 8

Which of the following best explains how eukaryotes are thought to have evolved?

Accepted Answer

Through the endosymbiotic incorporation of prokaryotic cells

Question 9

A scientist discovers a unicellular organism with a nucleus, mitochondria, and chloroplasts. To which group does this organism most likely belong?

Accepted Answer

Protists

Question 10

Which of the following is a key difference between protists and bacteria?

Accepted Answer

Protists have membrane-bound organelles, bacteria do not

Question 11

Which of the following scenarios best illustrates the impact of viruses on human life?

Accepted Answer

A viral pandemic causing widespread illness and economic disruption

Question 12

Which of the following equations best represents exponential growth of a bacterial population?

Accepted Answer

$$N_t = N_0$ e$$^{rt}$$

Question 13

A patient is diagnosed with a disease caused by a prokaryote that lacks peptidoglycan in its cell wall. Which group is the pathogen most likely from?

Accepted Answer

Archaea

Question 14

Which of the following is a defining feature of all viruses?

Accepted Answer

They require a host cell to replicate

Question 15

Which of the following protist lineages is most closely related to plants?

Accepted Answer

Green algae

Question 16

Which of the following best describes the role of synapomorphies in classifying organisms?

Accepted Answer

They are shared derived traits that help define evolutionary relationships

Question 17

Which of the following is a correct comparison between Bacteria and Archaea?

Accepted Answer

Both lack membrane-bound organelles

Question 18

Which of the following is a real-world example of a protist causing disease in humans?

Accepted Answer

Plasmodium causing malaria

Question 19

Which of the following best explains why viruses are not classified as living organisms?

Accepted Answer

They cannot reproduce without a host cell

Question 20

Which of the following is a key event in the evolution of eukaryotes according to the endosymbiotic theory?

Accepted Answer

The engulfment of a photosynthetic bacterium leading to the origin of chloroplasts

Introduction to the Properties of Life, Viruses, Prokaryotes, and Protists

Study Guide - Practice Questions