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

2 / 50

B. Gram stain was developed in the year _________

3 / 50

C. Cell division in Saccharomyces cerevisiae occur by _________

4 / 50

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

1. 1860 - 1870

2. 1890 - 1900

3. 1870 -1880

4. 1880 - 1890

5 / 50

E. Which of the following statements best describe transduction?

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

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

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

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

6 / 50

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

7 / 50

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

1. Production of ethanol

2. Biological central agents

3. Cycling of nutrients needed to maintain ecological balance

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

8 / 50

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

1. differential staining

2. Gram staining

3. Acid fast staining

4. Simple staining

9 / 50

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

10 / 50

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

11 / 50

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

1. Edwards Jenner

2. Francesco Redi

3. Robert Koch

4. Joseph Lister

12 / 50

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

13 / 50

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

14 / 50

N. Another name for phenol is _________

15 / 50

O. Bacteria were first discovered in the year __________

16 / 50

P. Alcoholic fermentation was found to be catalyzed by __________

17 / 50

Q. ___________ coined the term cell.

18 / 50

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

1. Gram staining

2. Acid fast staining

3. differential staining

4. Simple staining

19 / 50

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

1. II only

2. I and II

3. I only

4. III and II

20 / 50

T. Which of the following is not a characteristic of the mycobacterium?

1. they are either anaerobes or preferentially anaerobic

2. they are either saprophytes or pathogens

3. they are acid fast

4. they are slightly straight or curved rods

21 / 50

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

22 / 50

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

23 / 50

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

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

1. alcohol

2. aldehydes

3. chlorine

4. ethylene

26 / 50

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

27 / 50

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

28 / 50

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

1. staining of specimens

2. Fixation

3. Hanging drop technique

4. Stained smears of microorganism

29 / 50

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

30 / 50

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

1. Citric acid

2. Lactic acid

3. Gubberellic acid

4. Gluconic acid

31 / 50

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

1. Peptococcus

2. Micrococcus

3. Staphylococcus

4. Streptococcus

32 / 50

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

33 / 50

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

1. Scanning microscope

2. Transmission microscope

3. Dark field microscope

4. Phase contrast microscope

34 / 50

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

1. Catalase

2. Oxidase

3. Hydrogenase

4. Living yeast cells

35 / 50

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

1. Archaeobacteria

2. Gliding non – fruiting bacteria

3. Spirochetes

4. Budding bacteria

36 / 50

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

1. Production of ethanol

2. Biological central agents

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

4. Cycling of nutrients needed to maintain ecological balance

37 / 50

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

38 / 50

AL. Who supported the theory of spontaneous generation?

1. Louis Jablot

2. John Needham

3. Francesco Redi

4. Louis Pasteur

39 / 50

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

40 / 50

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

41 / 50

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

1. hypothermophiles

2. thermophiles

3. mesophiles

4. psychophiles

42 / 50

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

43 / 50

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

44 / 50

AR. ______________ is used for food preservation.

45 / 50

AS. 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. Light microscope

2. Compound microscope

3. Electron microscope

4. Simple microscope

46 / 50

AT. __________ is the simplest virus.

47 / 50

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

48 / 50

AV. Most microorganisms cannot be seen without ___________

49 / 50

AW. 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. Compound microscope

2. Electron microscope

3. Simple microscope

4. Light microscope

50 / 50

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

1. Viruses

2. Fungi

3. Algae

4. Protozoa

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