BIOS 242 COMPREHENSIVE EXAMINATION
TEST QUESTIONS AND SOLUTIONS FULLY
VERIFIED
●● What are microorganisms?
Answer: Organisms that can be harmful or beneficial, differing in size,
structure, and function.
●● What are prokaryotes?
Answer: Single-celled organisms without a nucleus, including bacteria
and archaea.
●● What are eukaryotes?
Answer: Organisms with a nucleus, including helminths, protozoa, and
fungi.
●● What are acellular infectious agents?
Answer: Non-cellular entities such as viruses and prions.
●● How do viruses survive?
Answer: They cannot live independently and require a host to survive.
, ●● What is a prion?
Answer: An infectious protein that causes disease without containing
DNA or RNA.
●● What was Louis Pasteur's contribution to microbiology?
Answer: He disproved spontaneous generation and developed the germ
theory.
●● What is pasteurization?
Answer: A heat treatment process for reducing microbial contamination,
named after Louis Pasteur.
●● What did Robert Hooke accomplish?
Answer: He was the first scientist to observe microbes and invented the
microscope.
●● Who was Anton van Leeuwenhoek?
Answer: The first to create and use a microscope effectively, observing
microscopic organisms.
●● What are Koch's Postulates?
Answer: A framework for identifying disease-causing organisms linked
to specific diseases.
TEST QUESTIONS AND SOLUTIONS FULLY
VERIFIED
●● What are microorganisms?
Answer: Organisms that can be harmful or beneficial, differing in size,
structure, and function.
●● What are prokaryotes?
Answer: Single-celled organisms without a nucleus, including bacteria
and archaea.
●● What are eukaryotes?
Answer: Organisms with a nucleus, including helminths, protozoa, and
fungi.
●● What are acellular infectious agents?
Answer: Non-cellular entities such as viruses and prions.
●● How do viruses survive?
Answer: They cannot live independently and require a host to survive.
, ●● What is a prion?
Answer: An infectious protein that causes disease without containing
DNA or RNA.
●● What was Louis Pasteur's contribution to microbiology?
Answer: He disproved spontaneous generation and developed the germ
theory.
●● What is pasteurization?
Answer: A heat treatment process for reducing microbial contamination,
named after Louis Pasteur.
●● What did Robert Hooke accomplish?
Answer: He was the first scientist to observe microbes and invented the
microscope.
●● Who was Anton van Leeuwenhoek?
Answer: The first to create and use a microscope effectively, observing
microscopic organisms.
●● What are Koch's Postulates?
Answer: A framework for identifying disease-causing organisms linked
to specific diseases.
