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. Gram stain was developed in the year _________

2 / 50

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

1. 1870 -1880

2. 1860 - 1870

3. 1890 - 1900

4. 1880 - 1890

3 / 50

C. Who supported the theory of spontaneous generation?

1. Francesco Redi

2. Louis Jablot

3. Louis Pasteur

4. John Needham

4 / 50

D. ______________ is used for food preservation.

5 / 50

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

1. Budding bacteria

2. Spirochetes

3. Gliding non – fruiting bacteria

4. Archaeobacteria

6 / 50

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

1. Edwards Jenner

2. Joseph Lister

3. Francesco Redi

4. Robert Koch

7 / 50

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

8 / 50

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

9 / 50

I. ___________ coined the term cell.

10 / 50

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

11 / 50

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

12 / 50

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

13 / 50

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

14 / 50

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

1. I and II

2. III and II

3. II only

4. I only

15 / 50

O. Most microorganisms cannot be seen without ___________

16 / 50

P. 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

17 / 50

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

1. Micrococcus

2. Staphylococcus

3. Peptococcus

4. Streptococcus

18 / 50

R. Which of the following statements best describe transduction?

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

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 mechanism of genetic transfer that involves cell to cell contact

19 / 50

S. Another name for phenol is _________

20 / 50

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

1. Catalase

2. Hydrogenase

3. Living yeast cells

4. Oxidase

21 / 50

U. Cell division in Saccharomyces cerevisiae occur by _________

22 / 50

V. 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. staining of specimens

3. Hanging drop technique

4. Fixation

23 / 50

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

1. mesophiles

2. psychophiles

3. thermophiles

4. hypothermophiles

24 / 50

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

25 / 50

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

26 / 50

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

27 / 50

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

28 / 50

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

29 / 50

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

1. alcohol

2. aldehydes

3. ethylene

4. chlorine

30 / 50

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

31 / 50

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

1. Gluconic acid

2. Gubberellic acid

3. Citric acid

4. Lactic acid

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. Light microscope

2. Compound microscope

3. Simple microscope

4. Electron microscope

33 / 50

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

34 / 50

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

35 / 50

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

36 / 50

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

37 / 50

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

1. Dark field microscope

2. Transmission microscope

3. Phase contrast microscope

4. Scanning microscope

38 / 50

AL. __________ is the simplest virus.

39 / 50

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

40 / 50

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

1. Viruses

2. Fungi

3. Algae

4. Protozoa

41 / 50

AO. The Basidiomycota are known a _________ fungi.

42 / 50

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

1. they are slightly straight or curved rods

2. they are either saprophytes or pathogens

3. they are either anaerobes or preferentially anaerobic

4. they are acid fast

43 / 50

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

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

2. Cycling of nutrients needed to maintain ecological balance

3. Biological central agents

4. Production of ethanol

44 / 50

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

45 / 50

AS. Alcoholic fermentation was found to be catalyzed by __________

46 / 50

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

1. Gram staining

2. Simple staining

3. Acid fast staining

4. differential staining

47 / 50

AU. 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. Simple microscope

4. Electron microscope

48 / 50

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

1. Gram staining

2. Simple staining

3. differential staining

4. Acid fast staining

49 / 50

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

50 / 50

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

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