Which of the following best describes the primary focus of microbiology?

• A. The study of microscopic organisms such as bacteria, viruses, fungi, and protozoa
• B. The study of animal behavior in natural environments
• C. The study of chemical reactions in living organisms
• D. The study of the structure and function of human organs

Answer: (A)

Verified step by step guidance

1. Step 1: Understand the definition of microbiology. Microbiology is a branch of biology that deals with the study of microorganisms, which are organisms too small to be seen with the naked eye.
2. Step 2: Identify the types of organisms studied in microbiology. These typically include bacteria, viruses, fungi, and protozoa, all of which are microscopic.
3. Step 3: Compare the given options to the definition of microbiology. Eliminate options that focus on animal behavior, chemical reactions in living organisms, or human organ structure and function, as these belong to other fields such as ethology, biochemistry, and anatomy respectively.
4. Step 4: Recognize that the option describing the study of microscopic organisms such as bacteria, viruses, fungi, and protozoa aligns directly with the primary focus of microbiology.
5. Step 5: Conclude that the best description of microbiology is the study of microscopic organisms, confirming the correct answer.