MCB 102 CBT PRACTICE TEST

Ace/Undergragra July 29, 2023

0 331 1 minute read

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Take your time to read instructions before taking this test.

There are 40 questions which you are to answer in 15 minutes that gives you roughly 30 seconds per question.

If you can get at least 60%, you can be rest assured that you’ll ace MCB 102 exam

In a normal exam you will be asked between 40 – 60 questions but I only arranged 40 questions

Note

Do not be in a hurry to answer the questions

Do not waste time on a question you don’t know

Move as fast as possible and starting with questions that don’t have calculation first to save time

Always crosscheck

Don’t be in a hurry to submit, you are not in a competition

Don’t be scared. Getting an A is easy

Don’t be over confident, you can end up a D, E or F. Calm your blood, no be only you sabi book

Please do well to use our comment box incase there’s a message you want to pass to us

70 – 100 A

60 – 69 B

50 – 59 C

45 – 49 D

40 – 44 E

0 – 39 F

I wish you success

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133

Created on July 29, 2023 By

Ace/Undergragra

MCB 102

1 / 40

1. For which viral disease, vaccine has been recently developed through the use of tissue culture?

A. Rabies

B. Measles

C. Mumps

D. Smallpox

2 / 40

2. Which of the following shapes can be assumed by a bacterium?

A. Square

B. Vibrios

C. Spiral

D. Circle

3 / 40

3. Organisms that are damaged by normal atmospheric level of oxygen and require oxygen level below the range of 2 to 10 % for are classified as:

A. microaerophile

B. obligate anaerobe

C. aerotolrant anaerobes

D. anaerobic

4 / 40

4. The following characterizes the cytoplasmic membrane except: _______.

A. It contains various enzymes involved in respiration and metabolism

B. The chromatin area is rich in DNA

C. It composed primarily of phospholipids and protein

D. It serves as a barrier to most water soluble molecules

5 / 40

5. The respiratory chain of bacteria is associated with the ______

A. Cytoplasm

B. Cytoplasmic membrane

C. Mitochondrial membrane

D. Cell wall

6 / 40

6. Which of the following are produced by microorganisms?

A. All the options

B. Bread

C. Fermented diary products

D. Alcoholic beverages

7 / 40

7. The vaccine for the disease anthrax was developed between the period __

A. 1890 - 1900

B. 1860 - 1870

C. 1870 - 1890

D. 1880 - 1890

8 / 40

8. Bacteria are divided into _____ volumes based on Bergey manual of systematic bacteriology.

A. 3

B. 4

C. 5

D. 6

9 / 40

9. Which part of the compound microscope helps in gathering and focusing light rays on the specimen to be viewed?

A. Magnifying lens

B. Objective lens

C. Eyepiece lens

D. Condenser lens

10 / 40

10. In bacterial cells, the capsules:

A. Promote attachment of bacteria to surfaces

B. Enables individual cells to stay associated in cell colonies

C. Facilitates moderate change of position

D. Increase surface area of the cell for nutrient absorption

11 / 40

11. Which among the following are microaerophilic bacteria?

A. Treponema

B. Spirochaeta

C. Borrelia

D. Cristispira

12 / 40

12. Acridine orange is which type of mutagen?

A. Base analog

B. Transposons

C. Intercalating agents

D. Chemical compound

13 / 40

13. Glycolysis can occur in _________

A. Neither aerobic cells not anaerobic cells

B. Both aerobic and anaerobic cells

C. Anaerobic cells

D. Aerobic cells

14 / 40

14. Which of the following is used in electron microscope?

A. Magnetic fields

B. Light waves

C. Electron beams and magnetic field

D. Electron beams

15 / 40

15. Which of the following inhibits DNA replication?

A. UV light

B. gamma rays

C. Cathode rays

D. X rays

16 / 40

16. Chrysolaminarin is the reserved food of ____________

A. Baccilariophycophyta

B. Xantophycophyta

C. Phaeophycophyta

D. Chlorophycophyta

17 / 40

17. Molds and yeasts are important research tools in the study of these fundamental processes except ___.

A. Genetics

B. Cytology

C. Biochemistry

D. Medicine

18 / 40

18. In which of the following treatment involve oxidation of organic constituents of the wastewater

A. Secondary treatment

B. Final treatment

C. Advanced treatment

D. Primary treatment

19 / 40

19.

Table of Contents

What is the approximate size of the bacterial cell

A. 2 micrometer in diameter

B. 1mm in diameter

C. 0.5 - 1.0 micrometer in diameter

D. 2mm in diameter

20 / 40

20. Cellulose is degraded to cellobiose by the enzyme ________________

A. Hexokinase

B. Cellulose dehydrogenase

C. Cellulase

D. Beta-glucosidase

21 / 40

21. Cryptococcosis is a disease of ______________

A. Parasitic infection

B. Mycotic infection

C. Viral infection

D. Bacterial infection

22 / 40

22. Which of the following environmental factors does not influence microbial growth?

A. Temperature

B. pH

C. Water activity

D. Topography

23 / 40

23. Which of the following classes of microorganisms has growth optima around 20 ۫ C to 45 ۫ C?

A. thermophiles

B. psychophiles

C. mesophiles

D. hypothermophiles

24 / 40

24. Which of the following occurs when a culture of microorganisms is transferred from a nutritionally poor medium to a richer one?

A. Shift right

B. Shift down

C. Shift left

D. Shift up

25 / 40

25. The following processes result in variation in microorganisms except _____.

A. gene association

B. mutation

C. recombination

D. gene transfer

26 / 40

26. Who is known as the father of Microbiology?

A. Edwin John Butler

B. Ferdinand Cohn

C. Antoni Van Leeuwenhoek

D. Robert Koch

27 / 40

27. What is Microbiology?

A. Study of organisms that are not visible to the human eyes

B. Study of microscope

C. Study of molecules that are visible to the human eyes

D. Study of animals and their family

28 / 40

28. To which of the following class of microorganisms does Enterococus faccalis belong?

A. obligate anaerobe

B. Anaerobic

C. aerotolrant anaerobes

D. microaerophile

29 / 40

29. A microscope in which the magnified image formed by the objective lens is further enlarged by one or more additional lenses is known as _______.

A. Compound microscope

B. Simple microscope

C. Light microscope

D. Electron microscope

30 / 40

30. Tyrocidines are more effective against ____________

A. Spirochetes

B. Mycoplasms

C. Gram-positive organisms

D. Gram-negative organisms

31 / 40

31. Which was the first disease for which a chemotherapeutic agent was used?

A. Syphilis

B. Small pox

C. Malaria

D. AIDS

32 / 40

32. The acid used as a pharmaceutical to supply calcium to the body is _______.

A. Gubberellic acid

B. Gluconic acid

C. Citric acid

D. Lactic acid

33 / 40

33. Protozoa that eat other organisms are known as _____________

A. Parasitic

B. Mutualistic

C. Saprophytic

D. Holozoic

34 / 40

34. Chemotrophs are:

A. Bacteria that derive carbon from inorganic sources

B. Bacteria that use light energy as their energy source

C. Bacteria that derive their carbon from preformed organic nutrients

D. Bacteria that obtain their energy by oxidizing inorganic chemical compounds

35 / 40

35. Which of the following deadly diseases cannot be prevented by vaccines?

A. Whoooping cough

B. Smallpox

C. tuberculosis

D. Diarrhea

36 / 40

36. The following are external structure of a bacterial cell wall except ____.

A. Spores and crysts

B. Flagella

C. Spores

D. Capsules

37 / 40

37. The following are agricultural activities of microorganisms except _______.

A. Cycling of nutrients needed to maintain ecological balance

B. Digestion of cellulose present in grasses on which ruminant animals feed

C. Production of ethanol

D. Biological central agents

38 / 40

38. Which of the following is a family of lambda phage viruses?

A. Styloviridae

B. Pedoviridae

C. Corticoviridae

D. Microviridae

39 / 40

39. Which of the following statements best describe the term systematics?

A. the process of determining if a particular isolate belong to a recognized taxon

B. a branch of taxonomy concerned with the assignment of names to taxonomic groups

C. the organization of organisms into progressively more inclusive groups

D. the scientific study of organisms with the ultimate objective of arranging them in an orderly manner

40 / 40

40. Vaccination was invented by __________

A. Pasteur

B. Crick

C. Jenner

D. Watson

Your score is

The average score is 52%

Please do well to drop a comment if this has really helped you. Thanks❤️

Ace/Undergragra July 29, 2023

0 331 1 minute read

What is the approximate size of the bacterial cell

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