Here is the important medical lab technician exam questions and answers pdf.

Question 1: Which of the following is NOT a prokaryotic organism?

A) Bacteria
B) Archaea
C) Fungi
D) Cyanobacteria

Answer 1: C) Fungi

Question 2: Which of the following is an example of a Gram-negative bacterium?

A) Staphylococcus aureus
B) Escherichia coli
C) Clostridium perfringens
D) Streptococcus pyogenes

Answer 2: B) Escherichia coli

Question 3: What is the primary function of the ribosomes in a bacterial cell?

A) DNA replication
B) Protein synthesis
C) ATP production
D) Lipid synthesis

Answer 3: B) Protein synthesis

Question 4: Which of the following microorganisms is responsible for causing tuberculosis?

A) Streptococcus pneumoniae
B) Mycobacterium tuberculosis
C) Salmonella enterica
D) Vibrio cholerae

Answer 4: B) Mycobacterium tuberculosis

Question 5: What is the name of the process by which bacteria exchange genetic material through direct cell-to-cell contact?

A) Binary fission
B) Conjugation
C) Sporulation
D) Transformation

Answer 5: B) Conjugation

Question 6: Which of the following is a viral disease?

A) Cholera
B) Influenza
C) Malaria
D) Tuberculosis

Answer 6: B) Influenza

Question 7: What is the primary role of antibiotics in treating bacterial infections?

A) Boost the immune system
B) Kill or inhibit the growth of bacteria
C) Enhance bacterial replication
D) Prevent viral infections

Answer 7: B) Kill or inhibit the growth of bacteria

Question 8: What is the outermost layer of a bacterial cell called, which is often involved in protection and adhesion?

A) Capsule
B) Nucleus
C) Cell membrane
D) Cytoplasm

Answer 8: A) Capsule

Question 9: Which of the following is a vector for transmitting diseases like malaria and dengue fever?

A) Mosquito
B) Flea
C) Tick
D) Fly

Answer 9: A) Mosquito

Question 10: What is the primary mode of action of antifungal medications?

A) Inhibition of cell wall synthesis
B) Inhibition of protein synthesis
C) Disruption of the bacterial cell membrane
D) Inhibition of DNA replication

Answer 10: A) Inhibition of cell wall synthesis

Of course, here are some additional microbiology multiple-choice questions (MCQs) with answers:

Question 11: What is the primary function of the Golgi apparatus in eukaryotic cells?

A) Protein synthesis
B) Lipid synthesis
C) Packaging and modification of proteins
D) DNA replication

Answer 11: C) Packaging and modification of proteins

Question 12: Which of the following is a common sexually transmitted bacterial infection?

A) Influenza
B) Tuberculosis
C) Gonorrhea
D) Malaria

Answer 12: C) Gonorrhea

Question 13: What is the term for a dormant, resistant form of bacteria that can survive harsh conditions?

A) Flagellum
B) Endospore
C) Capsule
D) Pilus

Answer 13: B) Endospore

Question 14: Which microorganism is responsible for causing yeast infections in humans?

A) Escherichia coli
B) Candida albicans
C) Mycobacterium tuberculosis
D) Streptococcus pyogenes

Answer 14: B) Candida albicans

Question 15: What is the primary role of the Krebs cycle (Citric Acid Cycle) in cellular respiration?

A) Production of ATP
B) Glycolysis
C) Oxidation of glucose
D) Synthesis of DNA

Answer 15: A) Production of ATP

Question 16: Which of the following is a viral disease that affects the liver and can lead to chronic infection and liver damage?

A) Tuberculosis
B) Hepatitis
C) Cholera
D) Malaria

Answer 16: B) Hepatitis

Question 17: What is the mode of transmission for the human immunodeficiency virus (HIV)?

A) Airborne droplets
B) Ingestion of contaminated food
C) Sexual contact and exposure to infected blood
D) Mosquito bites

Answer 17: C) Sexual contact and exposure to infected blood

Question 18: Which process allows bacteria to exchange genetic material by taking up free DNA from their environment?

A) Binary fission
B) Conjugation
C) Transformation
D) Transduction

Answer 18: C) Transformation

Question 19: What is the primary function of the mitochondria in eukaryotic cells?

A) Photosynthesis
B) Cellular respiration and ATP production
C) Protein synthesis
D) DNA replication

Answer 19: B) Cellular respiration and ATP production

20.  CAMP test used to identify the…

a. Staph aureus b. Streptococcus epidermis. Neisseria 

21. Which of the following bacteria shows Voges Proskauer (Acetoin production) test positive?

a. Klebsiella b. E.coli  c. Streptococcus

22. What is the normal color of the Methyl red indicator in the methyl red stain, when the test is negative?

a. Yellow   b. Green c. Red

23. In order to create suitable hardness and consistency in tissue processing. The tissues are infiltrated by the 

a. paraffin wax,  b.  Formalin c. both

24. The Phenylalanine deaminase test is used to differentiate the

a. proteus b. Providencia  c. both 

25. What is the purpose of a Standard Operating Procedure (SOP) in medical laboratory technology?

A. To ensure that testing is done accurately and consistently B. To save time for laboratory staff. C. To reduce costs associated with laboratory testing D. To prioritize certain tests over others 

Here’s the video of “Lab technician exam questions answer PDF”. 

26. Which of the following is an example of a laboratory safety SOP?

A. How to clean laboratory equipment B. How to perform a blood test C. How to order laboratory supplies D. How to communicate test results to patients.

27. Which of the following is not a potential consequence of failing to follow an SOP in a medical laboratory?

A. Inaccurate test results B. Loss of laboratory funding C. Injuries to laboratory staff D. Legal liability for the laboratory.

28. When should laboratory staff refer to an SOP?

A. Only when they are uncertain of a procedure B. Only when they have not performed the procedure before C. Before every test D. Once a month

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