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MICROBIO > EXAMS > Flashcards

EXAMS Flashcards

1
Q

Which of the following organism causes syphylis among infected people:

A

Treponema pallidum

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2
Q

The English Scientist reported to the world that smallest structural units of animals and plants are composed of “little boxes”. Later, the discovery by this scientist brought the theory that all living organisms are composed of “cells”.

A

Robert Hooke

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3
Q

The function of fimbriae in bacteria is:

A

To help some bacteria attach to surfaces (host cells)

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4
Q

One of the following bacterium is a rod-shaped that causes undulating fever among infected people.

A

Brucella abortus

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5
Q

A structure found in eucaryotic cells but not in procaryotic cells is:

A

Mitochondrial structure

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6
Q

Which of the following pair is mismatched:

A

Robert Koch ——– Aseptic surgery

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7
Q

Atomic mass (weight) of an atom is one of the following

A

Sum of protons and neutrons of an atom

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8
Q

High temperature inhibit enzymes by:

A

Denaturing enzyme activity

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9
Q

The ability to distinguish between two adjacent points with a microscope is called:

A

resolving power

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10
Q

ex of a monosaccharide molecule:

A

mannose
galactose
glucose
fructose

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11
Q

Which of the following enzyme is involved in removing NH2 or amino group from a substrate:

A

deaminase

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12
Q

true or false: A nucleotide consists of a purine or pyrimidine nitrogen base, a ribose or deoxyribose sugar, and a phosphate

A

true

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13
Q

thiamine nitrogen base is a—— present mostly in —–:

A

pyrimidine/DNA

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14
Q

The kingdom Protista consists of:

A

Protozoa, slime mold and algae

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15
Q

Eight cocci arranged into a cubical packet are called;

A

sarcinae

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16
Q

Which of the following enzyme is involved in synthetic reaction among microorganisms:

A

ligase

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17
Q

true or false: All enzymes are proteins but not all proteins are enzymes

A

true

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18
Q

The compound found in the cell wall of gram positive but not gram negative bacteria:

A

teichoic acids

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19
Q

Which group of microorganisms would least likely to contain species that could cause diseases in humans:

A

algae

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20
Q

Boiling surgical instruments was a common practice in the early 1800s for reducing infection and it was suggested for the first time by an English Scientist called :

A

Lister

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21
Q

The organism involved in a disease called “deadly plague” is one of the following:

A

Yersinia pestis

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22
Q

Vitamin B2 used as a coenzyme is one of the following:

A

riboflavin

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23
Q

One of the following scientist was the first to report the tobacco mosaic viruses from infected plants and he was the first to report viruses as a cause of disease.

A

iwanoski

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24
Q

Louis Pasteur and John Tyndall worked together to:

A

Disapprove the theory of spontaneous generation

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25
Q

thylakoids membrane in green bacteria and cyanobacteria are found in:

A

chloroplast

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26
Q

Which of the following organism is helicoidal in shape and form:

A

Treponema pallidum

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27
Q

Are located on rough endoplasmic reticulum inside the living cells of eucaryotic and are important in protein synthesis:

A

rRNA

28
Q

Which of the following organism is ellipsoidal (spherical) in form and shape

A

Staphylococcus aureus

29
Q

High concentration of dipicolinic acid and calcium are unique to what bacterial structure:

A

endospore

30
Q

Which of the following compound is a disaccharide molecule:

A

maltose

31
Q

One of the following scientist was the first to develop condenser for microscope and also a technique for using oil immersion objective that is the most effective objective to identify microscopic organisms.

A

abbe

32
Q

Phospholipids are complex lipids important in concentration of:

A

plasma mmb

33
Q

Which of the following antibiotic inhibits peptidoglycan synthesis in the cell wall of bacteria:

A

penicillin

34
Q

the term peritrichous refers to a bacterium with:

A

Flagella protruding from all areas of a bacterium

35
Q

Spiral bacteria that are short and do not form complete coils are called;

A

vibrios

36
Q

Arginine, serine, alanine, histidine, glycine, lysine, cysteine, tyrosine, valine and leucine all are:

A

aa

37
Q

Which of the following is probably true about all the experiments hat proved spontaneous generation:

A

Microorganisms were already present

38
Q

The resolving power of the compound brightfield microscope is:

A

0.2 um

39
Q

A scanning electron microscope uses which of the folowing sources of illumination:

A

Source of electron

40
Q

All of the following except one are biologically important hexoses:

A

ribose

41
Q

true or false:

Endospores allow a cell to survive environmental changes

A

true

42
Q

true or false: viruses cannot metabolize nutrients

A

true

43
Q

true or false: viruses are not composed of cells

A

true

44
Q

true or false: viruses cannot reproduce by themselves

A

true

45
Q

true or false: viruses have DNA or RNA, not both

A

true

46
Q

Two long strands of DNA nucleotides are held together by matched-pair of nitrogen bases of:

A

A-T, G-C

47
Q

Included in subkingdom eucaryotes:

A

protozoa

48
Q

Magnification of 100,000 or more can be obtained by using a:

A

Electron microscope

49
Q

true or false: bacterial Endospores are metabolically active

A

false

50
Q

in addition to magnifying an image, microscope objectives;

A

Focus the light rays coming from the specimen being viewed

51
Q

Spiral bacteria that are short and do not form complete coils are called:

A

vibrios

52
Q

He was the first who divided bacteria regarding to the absence or presence of endospores into two major groups: vegetative or active forms and sleeping or dormant forms.

A

cohn

53
Q

Which of the following nitrogen base is not found in DNA molecule of a bacterial cell:

A

uracil

54
Q

Which of the following scientist was able to transfer Bacillus antheracis from cattle to mice:

A

koch

55
Q

When bacteria are in solution of low ion concentration, they are prevented from bursting due to osmotic pressure because of the presence of the:

A

cell wall

56
Q

which of the following organism is cylindrica (rod-shaped) in form and shaped:

A

Bacillus megaterium

57
Q

true or false: Triglycerides are esters of glycerol and fatty acids

A

true

58
Q

true or false:

Lipids are basically esters of fatty acids

A

true

59
Q

true or false: Triglycerides are esters of glycerol and fatty acids

A

true

60
Q

true or false: Phospholipids are the major components of cytoplasmic membrane of bacteria

A

true

61
Q

true or false: Lipids form complexes with polysaccharides (LPS) and are a major component of the cell wall of bacteria

A

true

62
Q

Which of the following contains five carbons in its chemical structure:

A

ribose

63
Q

Dense, external coats of polysaccharide and polypeptide are referred to a structure of bacterium called:

A

capsule

64
Q

One of the following German Scientist studied the life cycle of anthrax bacillus and he used anthrax as a model to demonstrate that specific microorganisms are the cause of specific diseases

A

koch

65
Q

Many bacteria contain an invaginated and highly convoluted section of cytoplasmic membrane called the:

A

mesosome

66
Q

Scanning electron microscope uses which of the following sources of illumination:

A

electron

67
Q

He was the first to discover the antimicrobial activity of products released by a mold called Penicillium notatum. He called this product penicillin.

A

flemming

MICROBIO (6 decks)

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