Microbiology: The Science Quiz

Microbiology Overview

• Etymology: The word "biology" combines (bios) meaning "living organisms" and (logy) meaning "study of."
• Micro Definition: Refers to "very small" entities that require a microscope to be viewed.

Microorganisms

• Microorganisms Definition: Microbiology focuses on very small living organisms known as microorganisms or microbes.
• Types of Microorganisms:
  • Bacteria: Single-celled organisms that can be beneficial or harmful.
  • Algae: Plant-like organisms that can perform photosynthesis and are primarily aquatic.
  • Protozoa: Single-celled eukaryotic organisms, usually found in water and soil.
  • Fungi: A diverse group of organisms that include yeasts and molds, known for decomposing organic matter.
  • Viruses: Acellular entities that cannot be classified as living organisms by many scientists; often referred to as infectious agents or particles.

Viruses

• Classification Controversy: Many scientists exclude viruses from the definition of living organisms due to their inability to reproduce independently, leading to the use of terms like “infectious agents.”