MICROBIOLOGY STRAIGHTERLINE FINAL EXAM
2024 – COMPLETE ACCURATE EXAM QUESTIONS
WITH VERIFIED ANSWERS || 100% GUARANTEED
PASS <RECENT VERSION>
1. Who is considered the father of microbiology for his early observations of
microorganisms?
A) Louis Pasteur
B) Robert Koch
C) Antonie van Leeuwenhoek
D) Joseph Lister
2. The process of heating a liquid to a temperature that kills most bacteria without altering
the liquid's quality is called:
A) Sterilization
B) Disinfection
C) Pasteurization
D) Autoclaving
3. Which of the following is NOT a domain in the three-domain system?
A) Archaea
B) Bacteria
C) Eukarya
D) Protista
4. A prokaryotic cell lacks which of the following structures?
A) Cell membrane
B) Ribosomes
C) A true nucleus
D) Genetic material
5. What is the primary function of the bacterial cell wall?
A) Protein synthesis
B) Provides structural support and prevents osmotic lysis
C) Energy production
D) DNA replication
6. Bacteria that are spherical in shape are called:
A) Bacilli
B) Cocci
, C) Spirilla
D) Vibrios
7. The Gram stain differentiates bacteria based on differences in their:
A) Cell wall structure
B) Cell membrane composition
C) Ribosomal RNA
D) Flagellar arrangement
8. A Gram-positive bacterium appears what color after the Gram stain procedure?
A) Red/Pink
B) Purple/Violet
C) Colorless
D) Green
9. Which structure allows bacteria to adhere to surfaces and plays a role in biofilm
formation?
A) Flagellum
B) Pilus
C) Capsule or Glycocalyx
D) Fimbriae
10. Endospores are a dormant structure produced by some bacteria, notably:
A) Escherichia coli
B) Bacillus and Clostridium
C) Staphylococcus aureus
D) Streptococcus pyogenes
11. The movement of bacteria in response to a chemical stimulus is called:
A) Phototaxis
B) Chemotaxis
C) Magnetotaxis
D) Geotaxis
12. The region in a prokaryotic cell where the chromosomal DNA is located is called the:
A) Nucleus
B) Nucleoid
C) Plasmid
D) Ribosome
13. Small, circular, double-stranded DNA molecules that confer advantages like antibiotic
resistance are called:
A) Chromosomes
2024 – COMPLETE ACCURATE EXAM QUESTIONS
WITH VERIFIED ANSWERS || 100% GUARANTEED
PASS <RECENT VERSION>
1. Who is considered the father of microbiology for his early observations of
microorganisms?
A) Louis Pasteur
B) Robert Koch
C) Antonie van Leeuwenhoek
D) Joseph Lister
2. The process of heating a liquid to a temperature that kills most bacteria without altering
the liquid's quality is called:
A) Sterilization
B) Disinfection
C) Pasteurization
D) Autoclaving
3. Which of the following is NOT a domain in the three-domain system?
A) Archaea
B) Bacteria
C) Eukarya
D) Protista
4. A prokaryotic cell lacks which of the following structures?
A) Cell membrane
B) Ribosomes
C) A true nucleus
D) Genetic material
5. What is the primary function of the bacterial cell wall?
A) Protein synthesis
B) Provides structural support and prevents osmotic lysis
C) Energy production
D) DNA replication
6. Bacteria that are spherical in shape are called:
A) Bacilli
B) Cocci
, C) Spirilla
D) Vibrios
7. The Gram stain differentiates bacteria based on differences in their:
A) Cell wall structure
B) Cell membrane composition
C) Ribosomal RNA
D) Flagellar arrangement
8. A Gram-positive bacterium appears what color after the Gram stain procedure?
A) Red/Pink
B) Purple/Violet
C) Colorless
D) Green
9. Which structure allows bacteria to adhere to surfaces and plays a role in biofilm
formation?
A) Flagellum
B) Pilus
C) Capsule or Glycocalyx
D) Fimbriae
10. Endospores are a dormant structure produced by some bacteria, notably:
A) Escherichia coli
B) Bacillus and Clostridium
C) Staphylococcus aureus
D) Streptococcus pyogenes
11. The movement of bacteria in response to a chemical stimulus is called:
A) Phototaxis
B) Chemotaxis
C) Magnetotaxis
D) Geotaxis
12. The region in a prokaryotic cell where the chromosomal DNA is located is called the:
A) Nucleus
B) Nucleoid
C) Plasmid
D) Ribosome
13. Small, circular, double-stranded DNA molecules that confer advantages like antibiotic
resistance are called:
A) Chromosomes
