Study Aid Worksheet over Host/Microbe Interaction and Disease Processes Flashcards Preview

Microbiology Lecture Exam 2 > Study Aid Worksheet over Host/Microbe Interaction and Disease Processes > Flashcards

Flashcards in Study Aid Worksheet over Host/Microbe Interaction and Disease Processes Deck (19)
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1
Q

Host surface cell component that binds directly to the surface of a microorganism:___________

A

Receptors

2
Q

Relationship that describes an interaction between different organisms that live in close association with each other:_________________________

A

Symbiosis

3
Q

True or False: An individual can be infected but not diseased._______________

A

True

4
Q

A microorganism that grows on the certain surfaces (internal and external) of the human body without producing harmful effects:____________________

A

Normal Flora

5
Q

The ability to cause bodily injury by a pathogen is termed:________________________

A

Virulence

6
Q

Projections from the surface of a microorganism that bind to a specific site on the host cell are called:____________________________

A

Ligands

7
Q

Normal flora that can cause disease under certain circumstances are_____________________

A

Opportunists

8
Q

____________________ infections are acquired in a clinical setting.

A

Nosocomial

9
Q

A world-wide epidemic:__________________

A

Pandemic

10
Q

A ______________ infection is contained to the wound site without spreading.

A

Local

11
Q

Symptoms for a ___________________ disease may last for weeks, months, years, or for the life of the individual after the disease is contracted.

A

Chronic

12
Q

The minimum number of bacteria that causes a disease is the ______________________

A

Infectious dose

13
Q

Periodic cases of disease that occur in low levels in a population over time:______________________

A

Endemic level

14
Q

Hollow protein tubes that allow for transfer of DNA between bacteria cells and can serve as an adhesion or ligand for the bacteria cell:__________________

A

Pili

15
Q

__________________is an inanimate object that can serve as a vehicle of transmission of disease.

A

Formite

16
Q

A gel-like structure on the external surface of the bacteria that protects against phagocytosis: _____________

A

Capsule

17
Q

Protective enzyme common to skin, mucosal membrane surface, saliva, and tears:_____________________

A

Lysozyme

18
Q

Place an X in the following chart if the property applies to endotoxins and/or exotoxins.

Property Endotoxins Exotoxins

A virulence factor

Can be denatured

Located in the cell wall

Heat sensitive

Can injure the host

A

Property Endotoxins Exotoxins

A virulence factor X X

Can be denatured X

Located in the cell wall X

Heat sensitive X

Can injure the host X X

19
Q

Complete the following chart over the 3 types of symbiotic relationships between microorganisms and the human body. Place a + sign if the effect of the interaction is positive for the microorganism or human, place a - sign if the interaction is negative, place a 0 if interaction is neutral and give one example of each type of interaction.

Interaction Microorganism Human Example

Commensalism

Mutualism

Parasitism

A

Interaction Microorganism Human Example

Commensalism + O Staph on skin

Mutualism + + E.coli in colon

Parasitism + - All human Pathogens