BIO217

Category: BIO217

ATTENTION:

Kindly note that you will be presented with 50 questions randomized from the NOUN question bank. Make sure to take the quiz multiple times so you can get familiar with the questions and answers, as new questions are randomized in each attempt.

Good luck!

BIO217

1 / 50

A. The microscope used to study microbial motility and determining the shape of line cells is: __________

1. Dark field microscope

2. Scanning microscope

3. Phase contrast microscope

4. Transmission microscope

2 / 50

B. Who supported the theory of spontaneous generation?

1. John Needham

2. Louis Jablot

3. Francesco Redi

4. Louis Pasteur

3 / 50

C. Based on the source of energy bacteria can be classified as phototrophs and _________

4 / 50

D. ______________ is used for food preservation.

5 / 50

E. __________ is used to disinfect effluents from sewage treatment.

6 / 50

F. A phase in the growth curve during which there is no increase in cell number of a microbial population is called ____________. phase

7 / 50

G. Which of the following genera of bacteria are aerobes or facultative anaerobes that from irregular clusters by dividing into two or more planes?

1. Staphylococcus

2. Streptococcus

3. Peptococcus

4. Micrococcus

8 / 50

H. ____________are large thick walled spores formed when the tips of two sexually compatible hyphae fuse together.

9 / 50

I. __________ is the simplest virus.

10 / 50

J. The process by which the internal and external structures of cells and microorganisms are preserved and fixed in a position is known as: _________

1. Stained smears of microorganism

2. Fixation

3. Hanging drop technique

4. staining of specimens

11 / 50

K. A regular polyhedron with twenty equilateral triangle faces and twelve vertices is known as __________

12 / 50

L. The vaccine for the disease anthrax was developed between the period:

1. 1860 - 1870

2. 1870 -1880

3. 1880 - 1890

4. 1890 - 1900

13 / 50

M. Beijerinck and __________ pioneered the use of enrichment cultures and selective media.

14 / 50

N. Which one of the following is not an agricultural activity of microorganisms?

1. Biological central agents

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

3. Cycling of nutrients needed to maintain ecological balance

4. Production of ethanol

15 / 50

O. Alcoholic fermentation was found to be catalyzed by: __________

1. Oxidase

2. Living yeast cells

3. Hydrogenase

4. Catalase

16 / 50

P. A form of asexual reproduction process in which a single cell divides into two cells after developing a transverse septum is called ___________

17 / 50

Q. Which of the following statements best describe transduction?

1. a mechanism of genetic transfer that involves cell to cell contact

2. a mechanism of genetic transfer in which a bacterial virus transfer DNA from one cell to another

3. the formation of a new genotype by reassortment of genes

4. a genetic transfer process by which free DNA is incorporated into the recipient cell

18 / 50

R. In food preparation, microbes are reduced to acceptable levels using methods such as addition of vinegar and ___________

19 / 50

S. Simple acellular entities that can only reproduce within living cells are called _________

20 / 50

T. Mutation can involve the ____of nucleotides. I. division , II. addition, III. deletion

1. III and II

2. I and II

3. II only

4. I only

21 / 50

U. The most commonly used differential staining procedure is: ____________

1. Gram staining

2. Simple staining

3. Acid fast staining

4. differential staining

22 / 50

V. The vegetative structure of a fungus is called a __________

23 / 50

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

1. thermophiles

2. psychophiles

3. mesophiles

4. hypothermophiles

24 / 50

X. The acid used as a pharmaceutical to supply calcium to the body is: __________

1. Lactic acid

2. Gluconic acid

3. Citric acid

4. Gubberellic acid

25 / 50

Y. Another name for phenol is _________

26 / 50

Z. The formation of diphtheria tetanus antitoxins was induced by: ___________

1. Joseph Lister

2. Robert Koch

3. Edwards Jenner

4. Francesco Redi

27 / 50

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

1. Electron microscope

2. Light microscope

3. Compound microscope

4. Simple microscope

28 / 50

AB. ___________ are the most plentiful form of plankton in the Arctic.

29 / 50

AC. Which of the following groups of bacteria is not with unusual properties?

1. Budding bacteria

2. Archaeobacteria

3. Spirochetes

4. Gliding non – fruiting bacteria

30 / 50

AD. Systematic classification of fungi is based on sequence analtses of _________ RNA.

31 / 50

AE. ___________ was awarded the 1905 nobel prize for physiology or medicine.

32 / 50

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

1. Electron microscope

2. Light microscope

3. Simple microscope

4. Compound microscope

33 / 50

AG. Gram stain was developed in the year _________

34 / 50

AH. Heat – sensitive liquids and gases are sterilized by the use of ___________ method

35 / 50

AI. Which of the following is not placed in any microorganism’s domain?

1. Viruses

2. Algae

3. Fungi

4. Protozoa

36 / 50

AJ. The class of microorganisms that has growth optima around 20 ۫C to 45 ۫C is __________

37 / 50

AK. ___________ coined the term cell.

38 / 50

AL. The Basidiomycota are known a _________ fungi.

39 / 50

AM. The acid used as a pharmaceutical to supply calcium to the body is: _________

1. Lactic acid

2. Gubberellic acid

3. Citric acid

4. Gluconic acid

40 / 50

AN. Which of the following disinfectants is used in food industries?

1. aldehydes

2. chlorine

3. alcohol

4. ethylene

41 / 50

AO. Human insulin and human growth hormone are produced by __________bacteria.

42 / 50

AP. One of these is not an agricultural activity of microorganisms:

1. Cycling of nutrients needed to maintain ecological balance

2. Production of ethanol

3. Biological central agents

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

43 / 50

AQ. The most commonly used differential staining procedure is: __________

1. Gram staining

2. differential staining

3. Acid fast staining

4. Simple staining

44 / 50

AR. Cell division in Saccharomyces cerevisiae occur by _________

45 / 50

AS. The first person to publish an extensive, accurate observation of microorganisms was ___________

46 / 50

AT. Spoilage of meat and / or vegetables in cold syorage can be caused by some _________

47 / 50

AU. The union of a special male structure called a spermatium with a female reproductive structure is called ___________

48 / 50

AV. Alcoholic fermentation was found to be catalyzed by __________

49 / 50

AW. A system of surgery designed to prevent microorganisms from entering wounds was developed by __________

50 / 50

AX. The microscope used in the examination of unstained organisms suspended in fields is called ________ microscope.

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