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 slightly straight or curved rods

3. they are either anaerobes or preferentially anaerobic

4. they are either saprophytes or pathogens

2 / 50

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

3 / 50

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

4 / 50

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

1. 1870 -1880

2. 1860 - 1870

3. 1880 - 1890

4. 1890 - 1900

5 / 50

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

1. Lactic acid

2. Gluconic acid

3. Citric acid

4. Gubberellic acid

6 / 50

F. 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. Streptococcus

3. Micrococcus

4. Staphylococcus

7 / 50

G. Which of the following statements best describe transduction?

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

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

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

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

8 / 50

H. 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. Compound microscope

2. Simple microscope

3. Light microscope

4. Electron microscope

9 / 50

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

1. Gubberellic acid

2. Gluconic acid

3. Lactic acid

4. Citric acid

10 / 50

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

11 / 50

K. Most microorganisms cannot be seen without ___________

12 / 50

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

1. Cycling of nutrients needed to maintain ecological balance

2. Production of ethanol

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

4. Biological central agents

13 / 50

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

14 / 50

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

1. aldehydes

2. ethylene

3. alcohol

4. chlorine

15 / 50

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

16 / 50

P. ___________ coined the term cell.

17 / 50

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

18 / 50

R. __________ is the simplest virus.

19 / 50

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

1. Scanning microscope

2. Phase contrast microscope

3. Dark field microscope

4. Transmission microscope

20 / 50

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

1. Living yeast cells

2. Oxidase

3. Hydrogenase

4. Catalase

21 / 50

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

1. Biological central agents

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

3. Cycling of nutrients needed to maintain ecological balance

4. Production of ethanol

22 / 50

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

23 / 50

W. ______________ is used for food preservation.

24 / 50

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

25 / 50

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

26 / 50

Z. Another name for phenol is _________

27 / 50

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

28 / 50

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

29 / 50

AC. Bacteria were first discovered in the year __________

30 / 50

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

31 / 50

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

32 / 50

AF. Cell division in Saccharomyces cerevisiae occur by _________

33 / 50

AG. Gram stain was developed in the year _________

34 / 50

AH. 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

35 / 50

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

36 / 50

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

37 / 50

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

1. psychophiles

2. mesophiles

3. thermophiles

4. hypothermophiles

38 / 50

AL. Alcoholic fermentation was found to be catalyzed by __________

39 / 50

AM. The Basidiomycota are known a _________ fungi.

40 / 50

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

41 / 50

AO. 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. Stained smears of microorganism

3. Hanging drop technique

4. Fixation

42 / 50

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

1. Viruses

2. Protozoa

3. Algae

4. Fungi

43 / 50

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

44 / 50

AR. Who supported the theory of spontaneous generation?

1. Louis Jablot

2. John Needham

3. Francesco Redi

4. Louis Pasteur

45 / 50

AS. 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. Compound microscope

2. Electron microscope

3. Simple microscope

4. Light microscope

46 / 50

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

47 / 50

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

1. Gram staining

2. Acid fast staining

3. Simple staining

4. differential staining

48 / 50

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

1. Gliding non – fruiting bacteria

2. Budding bacteria

3. Spirochetes

4. Archaeobacteria

49 / 50

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

1. Francesco Redi

2. Joseph Lister

3. Robert Koch

4. Edwards Jenner

50 / 50

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

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