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. Bacteria were first discovered in the year __________

3 / 50

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

1. Viruses

2. Fungi

3. Algae

4. Protozoa

4 / 50

D. 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 mechanism of genetic transfer that involves cell to cell contact

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

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

5 / 50

E. Another name for phenol is _________

6 / 50

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

7 / 50

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

8 / 50

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

1. Gluconic acid

2. Lactic acid

3. Gubberellic acid

4. Citric acid

9 / 50

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

10 / 50

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

11 / 50

K. 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

12 / 50

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

13 / 50

M. The Basidiomycota are known a _________ fungi.

14 / 50

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

15 / 50

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

1. chlorine

2. ethylene

3. alcohol

4. aldehydes

16 / 50

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

17 / 50

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

1. differential staining

2. Gram staining

3. Simple staining

4. Acid fast staining

18 / 50

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

1. hypothermophiles

2. psychophiles

3. mesophiles

4. thermophiles

19 / 50

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

1. Dark field microscope

2. Transmission microscope

3. Scanning microscope

4. Phase contrast microscope

20 / 50

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

21 / 50

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

22 / 50

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

23 / 50

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

1. Fixation

2. Hanging drop technique

3. Stained smears of microorganism

4. staining of specimens

24 / 50

X. Most microorganisms cannot be seen without ___________

25 / 50

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

26 / 50

Z. ______________ is used for food preservation.

27 / 50

AA. Alcoholic fermentation was found to be catalyzed by __________

28 / 50

AB. 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

29 / 50

AC. __________ is the simplest virus.

30 / 50

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

1. Budding bacteria

2. Archaeobacteria

3. Gliding non – fruiting bacteria

4. Spirochetes

31 / 50

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

32 / 50

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

33 / 50

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

1. Gram staining

2. Simple staining

3. Acid fast staining

4. differential staining

34 / 50

AH. Who supported the theory of spontaneous generation?

1. Louis Pasteur

2. John Needham

3. Louis Jablot

4. Francesco Redi

35 / 50

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

36 / 50

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

37 / 50

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

1. Cycling of nutrients needed to maintain ecological balance

2. Biological central agents

3. Production of ethanol

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

38 / 50

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

1. I and II

2. I only

3. II only

4. III and II

39 / 50

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

40 / 50

AN. 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

41 / 50

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

1. Oxidase

2. Living yeast cells

3. Catalase

4. Hydrogenase

42 / 50

AP. 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 slightly straight or curved rods

4. they are acid fast

43 / 50

AQ. ___________ coined the term cell.

44 / 50

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

45 / 50

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

46 / 50

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

47 / 50

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

1. Robert Koch

2. Francesco Redi

3. Edwards Jenner

4. Joseph Lister

48 / 50

AV. Cell division in Saccharomyces cerevisiae occur by _________

49 / 50

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

1. 1860 - 1870

2. 1870 -1880

3. 1880 - 1890

4. 1890 - 1900

50 / 50

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

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