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

1. they are acid fast

2. they are either saprophytes or pathogens

3. they are slightly straight or curved rods

4. they are either anaerobes or preferentially anaerobic

2 / 50

B. Alcoholic fermentation was found to be catalyzed by __________

3 / 50

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

4 / 50

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

5 / 50

E. __________ is the simplest virus.

6 / 50

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

7 / 50

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

1. Catalase

2. Hydrogenase

3. Oxidase

4. Living yeast cells

8 / 50

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

1. thermophiles

2. mesophiles

3. psychophiles

4. hypothermophiles

9 / 50

I. 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

10 / 50

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

1. I and II

2. III and II

3. I only

4. II only

11 / 50

K. Bacteria were first discovered in the year __________

12 / 50

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

1. 1890 - 1900

2. 1860 - 1870

3. 1870 -1880

4. 1880 - 1890

13 / 50

M. ______________ is used for food preservation.

14 / 50

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

15 / 50

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

1. Francesco Redi

2. Robert Koch

3. Edwards Jenner

4. Joseph Lister

16 / 50

P. The Basidiomycota are known a _________ fungi.

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. Streptococcus

2. Staphylococcus

3. Peptococcus

4. Micrococcus

18 / 50

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

19 / 50

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

1. Fungi

2. Protozoa

3. Algae

4. Viruses

20 / 50

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

21 / 50

U. Cell division in Saccharomyces cerevisiae occur by _________

22 / 50

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

1. Production of ethanol

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

3. Cycling of nutrients needed to maintain ecological balance

4. Biological central agents

23 / 50

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

24 / 50

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

1. Production of ethanol

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

3. Biological central agents

4. Cycling of nutrients needed to maintain ecological balance

25 / 50

Y. Who supported the theory of spontaneous generation?

1. Louis Pasteur

2. John Needham

3. Francesco Redi

4. Louis Jablot

26 / 50

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

27 / 50

AA. ___________ coined the term cell.

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 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

30 / 50

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

31 / 50

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

32 / 50

AF. Gram stain was developed in the year _________

33 / 50

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

34 / 50

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

35 / 50

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

36 / 50

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

1. Gram staining

2. Simple staining

3. differential staining

4. Acid fast staining

37 / 50

AK. 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

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. Simple microscope

2. Electron microscope

3. Compound microscope

4. Light microscope

39 / 50

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

1. Gluconic acid

2. Citric acid

3. Gubberellic acid

4. Lactic acid

40 / 50

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

41 / 50

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

42 / 50

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

1. Lactic acid

2. Citric acid

3. Gubberellic acid

4. Gluconic acid

43 / 50

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

1. Simple staining

2. Acid fast staining

3. differential staining

4. Gram staining

44 / 50

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

1. alcohol

2. chlorine

3. aldehydes

4. ethylene

45 / 50

AS. Another name for phenol is _________

46 / 50

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

47 / 50

AU. Most microorganisms cannot be seen without ___________

48 / 50

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

49 / 50

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

50 / 50

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

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