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 one of the following 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. Production of ethanol

4. Biological central agents

2 / 50

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

1. Phase contrast microscope

2. Transmission microscope

3. Dark field microscope

4. Scanning microscope

3 / 50

C. 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

4 / 50

D. 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. staining of specimens

3. Hanging drop technique

4. Stained smears of microorganism

5 / 50

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

6 / 50

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

7 / 50

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

8 / 50

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

1. Viruses

2. Algae

3. Fungi

4. Protozoa

9 / 50

I. __________ is the simplest virus.

10 / 50

J. Who supported the theory of spontaneous generation?

1. Francesco Redi

2. Louis Jablot

3. Louis Pasteur

4. John Needham

11 / 50

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

1. psychophiles

2. hypothermophiles

3. mesophiles

4. thermophiles

12 / 50

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

13 / 50

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

14 / 50

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

15 / 50

O. 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

16 / 50

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

1. Citric acid

2. Gubberellic acid

3. Gluconic acid

4. Lactic acid

17 / 50

Q. 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

18 / 50

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

1. Simple staining

2. Acid fast staining

3. Gram staining

4. differential staining

19 / 50

S. Alcoholic fermentation was found to be catalyzed by __________

20 / 50

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

21 / 50

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

22 / 50

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

23 / 50

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

1. Francesco Redi

2. Edwards Jenner

3. Robert Koch

4. Joseph Lister

24 / 50

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

1. I only

2. III and II

3. I and II

4. II only

25 / 50

Y. The Basidiomycota are known a _________ fungi.

26 / 50

Z. Most microorganisms cannot be seen without ___________

27 / 50

AA. ______________ is used for food preservation.

28 / 50

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

29 / 50

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

30 / 50

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

31 / 50

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

32 / 50

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

1. Budding bacteria

2. Spirochetes

3. Archaeobacteria

4. Gliding non – fruiting bacteria

33 / 50

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

1. 1870 -1880

2. 1890 - 1900

3. 1860 - 1870

4. 1880 - 1890

34 / 50

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

1. Production of ethanol

2. Biological central agents

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

4. Cycling of nutrients needed to maintain ecological balance

35 / 50

AI. ___________ coined the term cell.

36 / 50

AJ. 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

37 / 50

AK. 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

38 / 50

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

39 / 50

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

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. Compound microscope

2. Electron microscope

3. Simple microscope

4. Light microscope

41 / 50

AO. Bacteria were first discovered in the year __________

42 / 50

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

43 / 50

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

1. ethylene

2. chlorine

3. aldehydes

4. alcohol

44 / 50

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

45 / 50

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

1. Simple staining

2. Gram staining

3. Acid fast staining

4. differential staining

46 / 50

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

1. Catalase

2. Living yeast cells

3. Hydrogenase

4. Oxidase

47 / 50

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

48 / 50

AV. Another name for phenol is _________

49 / 50

AW. Gram stain was developed in the year _________

50 / 50

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

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