Question 1

Which of the following best describes prokaryotic organisms?

Accepted Answer

They lack a membrane-bound nucleus.

Question 2

Which two domains consist of prokaryotic organisms?

Accepted Answer

Archaea and Bacteria

Question 3

A scientist discovers a single-celled organism living in a hot spring with no nucleus. Which domain is this organism most likely to belong to?

Accepted Answer

Archaea

Question 4

Which of the following is a key difference between Archaea and Bacteria?

Accepted Answer

Archaea have unique membrane lipids not found in Bacteria.

Question 5

Which of the following statements about prokaryotic cells is correct?

Accepted Answer

Their DNA is located in a region called the nucleoid.

Question 6

Which of the following environments would you most likely find Archaea?

Accepted Answer

Extreme environments such as hot springs and salt lakes.

Question 7

Which of the following is NOT a characteristic of Bacteria?

Accepted Answer

Having a nucleus surrounded by a membrane.

Question 8

A researcher is studying a prokaryotic organism that can survive in highly acidic environments. Which domain is this organism most likely from?

Accepted Answer

Archaea

Question 9

Which of the following best explains why antibiotics that target peptidoglycan synthesis are effective against Bacteria but not Archaea?

Accepted Answer

Bacteria have peptidoglycan in their cell walls, while Archaea do not.

Question 10

Which of the following equations best represents the process of binary fission in prokaryotes?

Accepted Answer

$$1 \rightarrow 2$$

Question 11

Which of the following is a real-world application of Archaea?

Accepted Answer

Methanogens are used in sewage treatment to produce methane gas.

Question 12

Which of the following statements is true regarding the genetic material of prokaryotes?

Accepted Answer

It is typically a single, circular DNA molecule.

Question 13

Which of the following best describes the evolutionary relationship between Archaea and Bacteria?

Accepted Answer

They share a common ancestor but have significant genetic differences.

Question 14

Which of the following is a common misconception about prokaryotic organisms?

Accepted Answer

They are always harmful to humans.

Question 15

Which of the following best explains why Archaea can survive in extreme environments?

Accepted Answer

Their unique membrane lipids and enzymes are stable under extreme conditions.

Prokaryotic Organisms: Archaea and Bacteria

Study Guide - Practice Questions