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

2 / 50

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

3 / 50

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

1. Biological central agents

2. Production of ethanol

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

4. Cycling of nutrients needed to maintain ecological balance

4 / 50

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

5 / 50

E. Alcoholic fermentation was found to be catalyzed by __________

6 / 50

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

7 / 50

G. Which of the following statements best describe transduction?

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

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

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

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

8 / 50

H. ___________ coined the term cell.

9 / 50

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

1. thermophiles

2. hypothermophiles

3. psychophiles

4. mesophiles

10 / 50

J. 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. Streptococcus

4. Staphylococcus

11 / 50

K. ______________ is used for food preservation.

12 / 50

L. Another name for phenol is _________

13 / 50

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

14 / 50

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

1. Spirochetes

2. Budding bacteria

3. Archaeobacteria

4. Gliding non – fruiting bacteria

15 / 50

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

1. 1880 - 1890

2. 1870 -1880

3. 1890 - 1900

4. 1860 - 1870

16 / 50

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

1. Lactic acid

2. Citric acid

3. Gluconic acid

4. Gubberellic acid

17 / 50

Q. Who supported the theory of spontaneous generation?

1. Francesco Redi

2. Louis Pasteur

3. John Needham

4. Louis Jablot

18 / 50

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

19 / 50

S. Cell division in Saccharomyces cerevisiae occur by _________

20 / 50

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

21 / 50

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

22 / 50

V. Gram stain was developed in the year _________

23 / 50

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

24 / 50

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

25 / 50

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

26 / 50

Z. Bacteria were first discovered in the year __________

27 / 50

AA. __________ is the simplest virus.

28 / 50

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

1. Protozoa

2. Viruses

3. Algae

4. Fungi

29 / 50

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

1. Dark field microscope

2. Scanning microscope

3. Transmission microscope

4. Phase contrast microscope

30 / 50

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

31 / 50

AE. Most microorganisms cannot be seen without ___________

32 / 50

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

33 / 50

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

1. ethylene

2. alcohol

3. chlorine

4. aldehydes

34 / 50

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

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. Simple microscope

2. Light microscope

3. Compound microscope

4. Electron microscope

36 / 50

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

1. Robert Koch

2. Joseph Lister

3. Francesco Redi

4. Edwards Jenner

37 / 50

AK. The Basidiomycota are known a _________ fungi.

38 / 50

AL. 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. Simple microscope

4. Compound microscope

39 / 50

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

40 / 50

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

41 / 50

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

42 / 50

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

43 / 50

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

1. Gram staining

2. Acid fast staining

3. Simple staining

4. differential staining

44 / 50

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

45 / 50

AS. 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

46 / 50

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

1. Gubberellic acid

2. Lactic acid

3. Citric acid

4. Gluconic acid

47 / 50

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

1. differential staining

2. Acid fast staining

3. Gram staining

4. Simple staining

48 / 50

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

1. II only

2. III and II

3. I only

4. I and II

49 / 50

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

1. they are either saprophytes or pathogens

2. they are acid fast

3. they are either anaerobes or preferentially anaerobic

4. they are slightly straight or curved rods

50 / 50

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

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