Biolology Questions and Answers




PART ONE:
Instructions: Read the question and choose the best answer for it. At the end of each question, there is a correct answer that best completes the question.
Students in an exam room

(1) Each of the organisms would be considered a microbe EXCEPT
(A) bacterium.
(B) mushroom.
(C) protozoan.
(D) virus.
(E) yeast.
Correct Answer: Mushroom. 

(2) The term use for disease-causing microorganism is
(A) pathogen.
(B) bacterium.  

(C) infection.  
(D) microbe.
(E) virus.  
Correct Answer: A. 

(3) Viruses are not considered living organisms because they
(A) are structurally very simple.
(B)  are ubiquitous in nature.
(C) are typically associated with disease.   
(D) can only be visualized using an electron microscope.  
(E) cannot reproduce by themselves.
  Correct Answer: E. 

(4) Which of the following is NOT a domain in the three-domain system?
(A) Eukarya.
(B)  Animalia.
(C) Bacteria.
(D) Archaea.  
Correct Answer: B. 

(5) If you were setting up an experiment to disapprove spontaneous generation in a liquid medium, which of the following would be essential to the experiment?
(A) Starting with a liquid medium that contains microorganisms.
(B)  Adding carbon dioxide to the liquid.
(C) Supplying the liquid with nutrients.    
(D) Adding antibiotics to the liquid.
(E) Using sterile liquid and eliminating the exposure microorganisms
Correct Answer: E. 

(6) The first step of directly linking a microbe to a specific disease according to Koch’s postulates is to
(A) obtain a sample of blood or other body fluid from a diseased animal.
(B)  inject a sample of blood or other body fluid from a diseased animal into a healthy animal.
(C) culture the blood or other body fluid from a diseased animal using nutrient medium.     
(D) isolate microbes from the blood of healthy animals.
(E) compare the blood of a sick animal  to blood obtained from a healthy animal.
Correct Answer: A. 

(7) In which of the following situations would Koch’s postulates be utilized?
(A)  Formulation of a vaccine against a new pathogen in genetic engineering lab.
(B)   Whenever the scientific method is used to investigate a microbiological problem.
(C)    Determination of the cause of cancer in a patient.
(D)  Development of a new antibiotic in a pharmaceutical lab.  
(E)  Determination of the cause of a new emerging disease by scientists studying disease transmission.
Correct Answer: E. 

(8) Which one of the following findings was essential for Edward Jenner’s vaccination process?
(A)  A weakened microorganism will not cause disease.  
(B)   Pathogenic microorganisms infect all humans and animals in the same manner.
(C)    Someone who recovers from a disease will not acquire the disease again.
(D)  Disease is caused by viruses.   
(E)  Exposure to milder disease from may produce immunity.
Correct Answer: E. 

(9) Which disease has been eliminated through the use of vaccines?
(A)  Measles.
(B)  Smallpox.
(C)  Rubella.
(D) Influenza.
(E) Tuberculosis.  
Correct Answer: B. 

(10) Microorganisms are essential to our life. Each of the following is an example of a beneficial function of microorganism EXCEPT
(A)  increased number of illness.
(B)   alternative fuel production.
(C)   bioremediation.
(D)  agriculture.
(E) gene therapy.
Correct Answer: A. 

(11) Common commercial benefits of include the synthesis of
(A)   aspirin.
(B)  vitamins.  
(C)  acetone.
(D) insulin.
(E) vitamins, acetone and insulin.
Correct Answer: D. 

(12) Normal microbiota are typically found in and on all the following EXCEPT the
(A)   mouth.
(B) upper respiratory system.  
(C) blood.
(D) skin.
(E) colon.
Correct Answer: C. 

(13) Which of the following statements about biofilms is FALSE?
(A)   Compared to free-living bacteria, biofilms are more sensitive to antibiotics.
(B)  Biofilms in your body protect mucous membrane from harmful microbes.
(C) Biofilms in pipes can block the flow of water.
(D)Biofilms on medical devices cause infections.
(E) Biofilms on rocks provide food for life.
Correct Answer: A. 

(14) Development of emerging infectious disease can be a result of all of the following EXCEPT
(A)  overuse of antibiotics.
(B)  use of genetically modified foods.
(C) modern transportation.
(D)microbial mutation.
(E) changes in the environment. 
Correct Answer: B. 

(15) In the name Escherichia coli, coili is the
(A)  domain name.
(B)  genus.
(C) family name.
(D) kingdom.
(E) species.
Correct Answer: E. 

(16) Which of the following are correctly matched?
(A)  Koch and microscopy.
(B)  Pasteur and antisepsis.
(C) Erhlich and vaccinations.
(D) Fleming and antimicrobial.
Correct Answer: D. 

(17)_____are unicellular, eukaryotic microbes that move by pseudopods, flagella, or cilia.
 (A)  Bacteria
(B)  Archaea
(C) Virus
(D) Protozoa
 Correct Answer: D. 

(18) Which of the following types of microorganism and its description are NOT correctly matched?
(A)  Protozoa-small animals. 
(B)  Bacteria-prokaryotic.
(C) Fungi-eukaryotic.
(D) Helminths-multicellular animals.
Correct Answer: A. 

(19) Which one of the following fields of study and its example are NOT correctly matched?
(A)  Immunology-study of vaccine.   
(B)  Mycology- study of athlete’s foot.
(C) Bacteriology-study of E. coli O157:H7.
(D) Parasitology-study of HIV.
Correct Answer: B. 

(20) An organism is found in a deep-sea vent where the temperature is very high and the mineral content very usual. The organism is unicellular, has no apparent nucleus, and has a cell wall but no peptidoglycan. This organism would be classified as which of the following organisms?
(A)  Archaea.    
(B)  Bacteria.
(C) Protozoa.
(D) Virus.
Correct Answer: B.




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