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. Alcoholic fermentation was found to be catalyzed by __________

2 / 50

B. Most microorganisms cannot be seen without ___________

3 / 50

C. ___________ coined the term cell.

4 / 50

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

1. Cycling of nutrients needed to maintain ecological balance

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

3. Production of ethanol

4. Biological central agents

5 / 50

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

6 / 50

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

7 / 50

G. Which of the following statements best describe transduction?

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

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

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

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

8 / 50

H. Another name for phenol is _________

9 / 50

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

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. staining of specimens

2. Fixation

3. Stained smears of microorganism

4. Hanging drop technique

11 / 50

K. __________ is the simplest virus.

12 / 50

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

13 / 50

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

14 / 50

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

15 / 50

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

1. Transmission microscope

2. Scanning microscope

3. Phase contrast microscope

4. Dark field microscope

16 / 50

P. 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

17 / 50

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

1. Robert Koch

2. Francesco Redi

3. Edwards Jenner

4. Joseph Lister

18 / 50

R. 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. Staphylococcus

3. Micrococcus

4. Streptococcus

19 / 50

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

1. Fungi

2. Algae

3. Viruses

4. Protozoa

20 / 50

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

21 / 50

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

1. they are either saprophytes or pathogens

2. they are either anaerobes or preferentially anaerobic

3. they are acid fast

4. they are slightly straight or curved rods

22 / 50

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

23 / 50

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

1. Oxidase

2. Hydrogenase

3. Living yeast cells

4. Catalase

24 / 50

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

25 / 50

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

26 / 50

Z. ______________ is used for food preservation.

27 / 50

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

1. Simple staining

2. differential staining

3. Acid fast staining

4. Gram staining

28 / 50

AB. Who supported the theory of spontaneous generation?

1. John Needham

2. Francesco Redi

3. Louis Jablot

4. Louis Pasteur

29 / 50

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

1. Gliding non – fruiting bacteria

2. Archaeobacteria

3. Budding bacteria

4. Spirochetes

30 / 50

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

31 / 50

AE. One of these 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

32 / 50

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

33 / 50

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

1. mesophiles

2. hypothermophiles

3. thermophiles

4. psychophiles

34 / 50

AH. 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. Compound microscope

3. Light microscope

4. Simple microscope

35 / 50

AI. 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. Electron microscope

3. Compound microscope

4. Simple microscope

36 / 50

AJ. Bacteria were first discovered in the year __________

37 / 50

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

38 / 50

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

1. Gram staining

2. Simple staining

3. Acid fast staining

4. differential staining

39 / 50

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

40 / 50

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

1. aldehydes

2. chlorine

3. alcohol

4. ethylene

41 / 50

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

1. Lactic acid

2. Gluconic acid

3. Gubberellic acid

4. Citric acid

42 / 50

AP. Gram stain was developed in the year _________

43 / 50

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

44 / 50

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

45 / 50

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

46 / 50

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

47 / 50

AU. Cell division in Saccharomyces cerevisiae occur by _________

48 / 50

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

49 / 50

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

1. 1860 - 1870

2. 1880 - 1890

3. 1870 -1880

4. 1890 - 1900

50 / 50

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

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