BIOL 271 Module 1 (Latest Update 2026 /
2027) Microbiology Questions & Answers
{Grade A} 100% Correct - Portage Learning
What is microbiology? - Correct answer "The study of biological processes at the
microscopic level, focusing on microorganisms and viruses too small to see with the
naked eye."
What are microorganisms? - Correct answer "Living microscopic organisms such as
bacteria, archaea, fungi, protozoa, and algae."
Are viruses microorganisms? - Correct answer "No, viruses are not living and
therefore not microorganisms, but they are still classified as microbes."
What are beneficial roles of microbes? - Correct answer "Aid digestion, protect against
harmful invaders, help crops grow, and are used in biotechnology (e.g., antibiotics and
fermentation)."
, What are harmful roles of microbes? - Correct answer "They cause diseases and
infections in humans, animals, and plants."
What are the three domains of life? - Correct answer "Bacteria, Archaea, and Eukarya."
Which domains are prokaryotic? - Correct answer Bacteria and Archaea.
Which domain is eukaryotic? - Correct answer Eukarya.
What is the difference between prokaryotic and eukaryotic cells? - Correct answer
Prokaryotic cells lack a nucleus; eukaryotic cells have a nucleus and membrane-
bound organelles.
What are the four main bacterial shapes? - Correct answer "Coccus (spherical),
Bacillus (rod), Vibrio (curved rod), and Spirillum (spiral)."
What are extremophiles? - Correct answer "Archaea that live in extreme environments
such as high heat, acidity, or salinity."
2027) Microbiology Questions & Answers
{Grade A} 100% Correct - Portage Learning
What is microbiology? - Correct answer "The study of biological processes at the
microscopic level, focusing on microorganisms and viruses too small to see with the
naked eye."
What are microorganisms? - Correct answer "Living microscopic organisms such as
bacteria, archaea, fungi, protozoa, and algae."
Are viruses microorganisms? - Correct answer "No, viruses are not living and
therefore not microorganisms, but they are still classified as microbes."
What are beneficial roles of microbes? - Correct answer "Aid digestion, protect against
harmful invaders, help crops grow, and are used in biotechnology (e.g., antibiotics and
fermentation)."
, What are harmful roles of microbes? - Correct answer "They cause diseases and
infections in humans, animals, and plants."
What are the three domains of life? - Correct answer "Bacteria, Archaea, and Eukarya."
Which domains are prokaryotic? - Correct answer Bacteria and Archaea.
Which domain is eukaryotic? - Correct answer Eukarya.
What is the difference between prokaryotic and eukaryotic cells? - Correct answer
Prokaryotic cells lack a nucleus; eukaryotic cells have a nucleus and membrane-
bound organelles.
What are the four main bacterial shapes? - Correct answer "Coccus (spherical),
Bacillus (rod), Vibrio (curved rod), and Spirillum (spiral)."
What are extremophiles? - Correct answer "Archaea that live in extreme environments
such as high heat, acidity, or salinity."
