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

2 / 50

B. ___________ coined the term cell.

3 / 50

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

1. Lactic acid

2. Gubberellic acid

3. Gluconic acid

4. Citric acid

4 / 50

D. Which of the following statements best describe transduction?

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

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 in which a bacterial virus transfer DNA from one cell to another

5 / 50

E. Bacteria were first discovered in the year __________

6 / 50

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

1. Stained smears of microorganism

2. staining of specimens

3. Fixation

4. Hanging drop technique

7 / 50

G. 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. Compound microscope

3. Light microscope

4. Electron microscope

8 / 50

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

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. Electron microscope

2. Light microscope

3. Simple microscope

4. Compound microscope

10 / 50

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

11 / 50

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

1. Simple staining

2. Acid fast staining

3. differential staining

4. Gram staining

12 / 50

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

13 / 50

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

14 / 50

N. Gram stain was developed in the year _________

15 / 50

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

1. Protozoa

2. Viruses

3. Algae

4. Fungi

16 / 50

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

17 / 50

Q. 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 saprophytes or pathogens

4. they are either anaerobes or preferentially anaerobic

18 / 50

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

19 / 50

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

20 / 50

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

21 / 50

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

1. II only

2. I only

3. III and II

4. I and II

22 / 50

V. __________ is the simplest virus.

23 / 50

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

24 / 50

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

1. Dark field microscope

2. Phase contrast microscope

3. Scanning microscope

4. Transmission microscope

25 / 50

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

26 / 50

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

1. alcohol

2. ethylene

3. aldehydes

4. chlorine

27 / 50

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

1. Spirochetes

2. Archaeobacteria

3. Budding bacteria

4. Gliding non – fruiting bacteria

28 / 50

AB. Who supported the theory of spontaneous generation?

1. Francesco Redi

2. Louis Jablot

3. Louis Pasteur

4. John Needham

29 / 50

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

1. Cycling of nutrients needed to maintain ecological balance

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

3. Production of ethanol

4. Biological central agents

30 / 50

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

31 / 50

AE. Alcoholic fermentation was found to be catalyzed by __________

32 / 50

AF. Most microorganisms cannot be seen without ___________

33 / 50

AG. The Basidiomycota are known a _________ fungi.

34 / 50

AH. Another name for phenol is _________

35 / 50

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

1. mesophiles

2. thermophiles

3. psychophiles

4. hypothermophiles

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. Streptococcus

2. Staphylococcus

3. Peptococcus

4. Micrococcus

37 / 50

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

1. 1860 - 1870

2. 1890 - 1900

3. 1880 - 1890

4. 1870 -1880

38 / 50

AL. ______________ is used for food preservation.

39 / 50

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

1. Cycling of nutrients needed to maintain ecological balance

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

3. Production of ethanol

4. Biological central agents

40 / 50

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

1. differential staining

2. Gram staining

3. Acid fast staining

4. Simple staining

41 / 50

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

42 / 50

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

1. Catalase

2. Living yeast cells

3. Oxidase

4. Hydrogenase

43 / 50

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

44 / 50

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

45 / 50

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

46 / 50

AT. Cell division in Saccharomyces cerevisiae occur by _________

47 / 50

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

48 / 50

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

1. Francesco Redi

2. Joseph Lister

3. Robert Koch

4. Edwards Jenner

49 / 50

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

50 / 50

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

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