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問題一覧
1
Process whereby bacteria, animal parasites, fungi, and viruses enter host cells or tissues and spread in the body
Invasion
2
The process by which bacteria stick to the surfaces of host cells.
Adherence
3
A person or animal with asymptomatic infection that can be transmitted to another susceptible person or animal
Carrier
4
Multiplication of infectious agent within the body.
Infection
5
Microbial flora harbored by normal, healthy individuals
Microbiota
6
A microorganism that does not cause disease
Nonpathogen
7
An agent capable of causing disease only when the host's resistance is impaired
Opportunistic pathogen
8
A microorganism capable of causing disease
Pathogen
9
The ability of an infectious agent to cause disease
Pathogenecity
10
Protein toxins that activate the immune system by binding to major histocompatibility complex (MHC) molecules and T-cell receptors (TCR) and stimulate large numbers of T cells to produce massive quantities of cytokines
Superantigens
11
He proposed a series of postulates that have been applied broadly to link many specific bacterial species with particular diseases.
Robert Koch
12
The following are the microbes that cannot be grown in vitro but have animal models instead, except
Neisseria gonorrhoeae
13
Which of the following microorganism has no animal model but can be grown in vitro
Neisseria gonorrhoeae
14
The following are portals of entry of pathogenic bacteria except
Hair and Nails
15
Microorganism that causes Whipple disease
Tropheryma whipplei
16
Causes bacillary angiomatosis
Bartonella henselae
17
Causes monocytic ehrlichiosis
Ehrlichia chaffeensis
18
Causes hantavirus pulmonary syndrome
Sin Nombre virus
19
Causes Kaposi sarcoma
Human Herpesvirus 8
20
Causes tuberculosis
Mycobacterium tuberculosis
21
Cause of bubonic plague
Yersinia pestis
22
What is the mode of transmission of Bacillus anthracis
Raw hair from infected animals
23
Mode of transmission of Yersinia pestis
fleas
24
Causes gastroenteritis and gas gangrene
Clostridium perfringens
25
Causes botulism
Clostridium botulinum
26
Causes tetanus
Clostridium tetani
27
Process where DNA from one organism released into the environment and taken up by different organism
Transformation
28
These are extra chromosomal pieces of DNA capable of replicating
Plasmids
29
These are highly mobile segments of DNA
Transposons
30
The following are the common signals that control the expression of the virulence genes except
Water quality
31
Diphtheria toxin is greatly enhanced when grown in medium with ____________
low iron
32
B. pertussi virulence genes gets enhanced with _______________
high concentration of magnesium sulfate or nicotinic acid
33
Cholera toxin is higher at __________
pH of 6.0 and temperature of 30 degrees Celsius
34
Plasmid-encoded proteins of Y. pestis are expressed maximally at _________ (host temperature) and minimally at _________;(flea temperature).
35-37 degrees Celsius, 20-28 degrees Celsius
35
Yersinia enterolitica and Listeria monocytogenes become motile at 26 degrees Celsius and not at 37 degrees Celsius
False
36
These are large organized group of genes that are usually 10-200 kb in size.
Pathogenecity Islands (PAIs)
37
Which of the following belong to the major properties of PAIs
Present in the genome of pathogenic members but absent in nonpathogenic members