Shared Flashcard Set

Details

MicroBiology Final
Group of previously asked questions, book problems, and random questions
94
Biology
Undergraduate 4
05/10/2012

Additional Biology Flashcards

 


 

Cards

Term
Type 1 Hypersensitivity
Definition

-IgE-Mediated

-Inherited

-20-30% of population has it

-Generalized Anaphyxis or Local Anaphylaxisf

Term
Localized Anaphylaxis
Definition

-Causes most allergic reactions

(Hives, Hay Fever, Asthma)

Term
Hives
Definition
Allergic skin condition characterized by the formation of wheal and flare rash
Term
Hay Fever
Definition

-Allergic condition caused by an inhaled antigen

 

-Condition marked by itchy, teary eyes, sneezing and runny nose

Term
Asthma
Definition
-Allergic mediators attracted to inflamed respiratory tract
Term
Generalized Anaphylaxis
Definition

-Rare, but more serious

 

-Antigen enters the bloodstream and becomes more widespread

 

-Effects entire body and can cause shock

Term
Immunotherapy
Definition
-Techniques used to modify immune system for favorable effect
Term
Immunotheropy involved with injecting individual with a dilute suspension of allergen
Definition

-Desensitization

 

-Concentration of allergen gradually increased over time, until less sensitive (less IgE response)

Term
Type 2 Hypersensitivity 
Definition

-Cytotoxic

 

-Includes: Hemolytic disease of women, Transfusion reactions

 

-Cells destroyed through MAC and ADCC

 

-IgM induced

Term
Hemolytic Disease of Women
Definition

-Type 2 Hypersensitivity

 

-Basis = incompatibility of Rh factor between mother and child

Term
Transfusion Reactions
Definition

-Types A, B, AB, or O

-AB+ = universal acceptor

-O = universal donor

 

-

Term
Type 4 Hypersensitivity 
Definition

-Delayed Cell Mediated Immunity

 

-T-Cells are responsible for reactions (can ocurr anywhere)

 

-Cause: contact dermatitis, tissue damage, and rejection of tissue grafts

Term
Contact Hypersensitivities (Type 4)
Definition

-Mediated by T-Cells

-Cytokines initiate inflammation to attract macrophages, macrophages release mediators  

 

-Examples: Poison Ivy, Nickel in metal, latex

Term
Autoimmune Diseases
Definition

-Body usually recognizes self antigens, and destroys cells that would destroy self.

 

-May occur after tissue injury

 

-Response can be organ specific or widspread

Term
Example of Organ-Specific Autoimmune Disease:
Definition

-Thyroid Disease

 

-Type 1 Diabetes

Term
Example of Widespread Response Autoimmune Disease
Definition

-Lupus

 

-Rheumatoid Arthritis

 

-Myasthenia

Term
Autoimmune Disease Treatment
Definition

-Killing dividing cells (Immunosuppressant)

 

-Controlling T-Cell signalling (Cyclosporin)

 

-Anti-Inflammatory Meds (Cortico)

 

-Replacement Therapy (Insulin)

 

-

Term
Immunodeficiency Disorder
Definition

-Marked by bodies inability to make and sustain an adequate immune response

 

-Primary/Congenital or Secondary/Acquired

Term
Primary Immunodeficiency Disorder
Definition

-Rare

-Example:

 

1. Agammaglobulinemia: few/no antibodies produced

 

2. SCID: Neither T nor B lymphocytes are functional

 

3. Selective IgA

Term

Secondary Immunodeficiencies

 

Definition

-Result from the environment

 

-Often result from the depletion of certain cells in immune system

 

Term
Most serious form of Secondary Immunodeficiency Disorder?
Definition

AIDS

 

-Destroys helper T-Cells

Term
An IgE-Mediated Allergic Reaction?
Definition
A. Reaches a peak within minutes after exposure to antigen.
Term

Which of the following statements is true about ABO blood group system in humans?

 

Definition
E. In blood transfusions, incompatibilities cause compliment lyses of red blood cells
Term
All of the following are true of immune complexes, except:
Definition
A. The most common complexes consist of antigen IgE
Term
Delayed hypersensitivity reactions in the skin:
Definition
D. Show induration becuase of the influx of sensitized T-Cells and macrophages
Term
Organ transplants, such as the kidneys:
Definition
E. Are rejected by a complex process in which cellular mechanisms predominate
Term

All of the following are true of autoimmune disease, except:

 

Definition
C. During heart attacks antigens released, but no response occurs to them
Term
Autoantibody-induced autoimmune diseases:
Definition
A. Can sometimes be passively transferred from mother to fetus
Term
All of the following are approaches being used to treat autoimmune diseases, except:
Definition
C. Antibiotics
Term
Patients with primary immunodeficiencies in the complement system:
Definition
A. Who lack late-acting components (C5, C6, C7, C8, C9) show increased susceptibility to Neisseria infections
Term

One of the most serious secondary immunodeficiencies is:

 

Definition
A. AIDs
Term
Human - Microbe interactions
Definition

-Mutualism

 

-Commensalism

 

-Paratism

Term
Why microbes choose humans
Definition

-Dry and wet

-Acidic, basic and neutral

-warm and cool

-High and low pressure

-Nutrient rich and nutrient poor

Term
Active Immunity
Definition

-result of an immune response upon exposure to antigen

 

-Specific B and T cells are activated to give protection

Term

Passive Immunity

 

Definition

-Occurs naturally during pregnancy 

 

-IgE antibodies cross placenta to fetus

Term
Koch's Postulates
Definition

1. The microbe must be present in every case of the disease

 

2. The organism must be grown in a pure culture from diseased hosts

 

3. The same disease must be produced when a pure culture of the organism is introduced to a host

 

4. The microbe must be recovered from the experimentally infected host

Term
Koch's Molecular Postulates
Definition

1. The virulance factor gene or its produce should be found in pathogenic strains of the organism

 

2. Mutating the virulance gene to disrupt its function should reduce the virulance of the pathogen

 

3. Reversions of the mutated virulence gene or replacement with the wild-type version should restore virulence to the strain

Term
Normal Microbiota
Definition
Excludes pathogens by covering binding sites that could be used for microbe attachment  
Term
Stages of infectious disease include:
Definition

1. Incubation period

 

2. Illness

 

3. Convalescenes

Term
Adhesins
Definition
Allow microbes to bind to host cells
Term
Siderphores
Definition
Enable microbes to scavenge Iron
Term
Type III secretion system
Definition
Allows gram+ bacteria to deliver compounds directly to host cells
Term
IgA Proteases
Definition
-Enable bacteria to avoid the effects of IgA 
Term

Microbe mechanisms to prevent encounters with phagocytes

 

Definition

-C5a peptidase

 

-Membrane damaging toxins

Term
Microbe mechanisms to avoid recognition from phagocytes
Definition

-Capsules

 

-M protien

 

-Fc Receptors

Term
Exotoxins
Definition

-Proteins that are very damaging (specified)

 

-Neurotoxins, enterotoxins, cytotoxins

Term
Superantigens
Definition
-Override the specificity of the T-Cell response 
Term
Oportunistic pathogens are least likely to effect whom
Definition

C. College students

 

 

(Effects: AIDs patients, Cancer patients, drug addicts, transplant patients)

Term
Capsules and M protein are thought to interfere with what?
Definition
A. Opsonization by complement proteins
Term
The C5a peptidase enzyme of Streptococcus pyogenes breaks down C5a resulting in
Definition
D. Decreased accumulation of phagocytes
Term
Botulism can
Definition
C. can cause disease without avoiding the immunal response
Term
Superantigens
Definition
C. Elicit a response from a large number of T-Cells
Term
Endotoxins are
Definition
D. Heat stable
Term
M. tuberculosis
Definition

-Obligate aerobe

-Gram+

-Complex lipid cell wall (acid fast, resistant to drying and chemicals)

-Infects a wide variety of species

Term
Fredric Chopin died of:
Definition
M. tuberculosis
Term
Freddie Mercury died of:
Definition
AIDs
Term
AIDs targets:
Definition

1. Intestinal Epithelium

 

2. Brain Cells

 

3. CD4+ macrophages

 

4. CD4+ TH2 helper cells 

 

5. CD4+ TH1 inflammatory cells

Term
Opportunistic Infections of AIDs
Definition

1. Pneumocystosis (Fungal)

 

2. Toxoplasmosis (Protozoan)

 

3. Cytomegalovirus Disease (Viral)

 

4. Mycobacterial Disease (Bacterial)

Term
Reverse Transcriptase
Definition

Used by AIDs to copy its viral DNA inside the host cell

 

-Once made it is inserted into the host cells DNA

Term
Viral Integrase
Definition
Used by AIDs to insert viral DNA into the host genome
Term
Tumors associated with Immunodeficiencies (AIDs)
Definition

1. Kaposi's Sarcoma

 

2. B-Lymphocytic Tumors of brain

 

3. Cervical and Anal Carcinoma

Term
All of the following are associated with AIDs related complex (ARC)
Definition

Fever, fatigue, weight loss, diarrhea

 

Not: Blindness

Term
All of the following are HIV accessory genes
Definition

tat, vpr, rev, vpu

 

Not: env

Term
When was AIDs first recognized as a disease
Definition
C. 1981
Term
AIDs defining conditions include:
Definition

1. Herpes simplex of esophogus

 

2. Pneumonia

 

3. Invasive uterine cancer

 

4. Kaposi's Sarcoma

 

Not: Influenza

Term
Which cells can be infected by HIV
Definition

1. T-Helper cells

 

2. Intestinal Epithelium

 

3. Antigen presenting cells

 

4. Brain Cells

Term
HIV antigens
Definition

1. TM (tuberculosis)

 

2. RT

 

3. MA

 

4. CA

 

Not: CD4

Term
What causes death of the T helper cell in HIV
Definition

1. Replication of HIV lyses the cell

 

2. Infected cells are destroyed by cytotoxic T cells

 

3. Infected cells are attacked by natual killer cells

 

4. Cells are killed by fusion and syncytium formation

Term
Epidemiology
Definition
The study of the spread, control and prevention of disease in populations
Term
Attack Rate
Definition
Represents the number of cases that develop from exposures to a disease
Term
Prevalence
Definition
Total number of cases 
Term
Human Reservoirs
Definition

most significant reservoirs of most communicatable disease

 

-Some bacteria can only exist and multiply in humans

Term
Zoonotic Diseases
Definition
Diseases that can be transferred from animals to humans
Term
Reservoirs of Infection
Definition

-Where the disease multiplies and survives

 

-Reservoirs can be: Human, animal or environmental

Term
Environmental Reservoirs
Definition

-Harbor bacteria that can be pathogenic

 

-Soil, Bog

 

-Bacteria that have environmental reservoirs are nearly impossible to eliminate

Term
Herd Immunity
Definition

Vaccination of a significant part of a population provides protection for those that are susceptable 

 

-Flu shot, DPT vaccine

Term
Endemic 
Definition
Disease constantly present in population
Term
Epidemic
Definition
Unusually large number of disease cases in a population
Term
Pandemic
Definition
Worldwide disease spread
Term
What is an example of a fomite?
Definition

A. Table

 

Inanimate objects that serve as pathogenic transmitters

Term
Which of the following would be easiest to eradicate?
Definition
B. A disease that only effects humans and has obvious symptoms
Term
Which methods of disease are hardest to control?
Definition
A. Airborne
Term
The purpose of an analytical study is to?
Definition
B. Identify risk factors that result in high frequencies of disease
Term
Nitroaromatic 
Definition
TNT
Term
Synthetic Polymers
Definition
Plastics
Term
Organochlorides 
Definition

-DDT (Pesticides)

-Dry cleaining

-PVC

-TCE, degreaser

Term
Xenobiotic Compounds
Definition

-Nitroaromatic

-Synthetic Polymers

-Organochlorides

 

-Cant be broken down naturally

Term
Biodegration 
Definition
Enzymes Degrade
Term
Volitization
Definition
Gas phage and seep through
Term
Plants + Bioremedation
Definition
Faster way to clean up spills
Term
Problems with heavy metals
Definition

Mobilization

-Slubilization

-Protonation

-Chelation (siderophores; Fe, Pu)

-Methylation

 

Immobilization

Intracellular sequestration

-Crystalization, Precipitation

-Sorption

Term
Bacillus thuringiensis 
Definition

Used to kill caterpillars

-Opened them up to expose them to infection

Term
Endophytes
Definition

Fungi that live within plant tissue

 

-Inhibit pathogen growth

Term
Fungal spores will not germinate when there is not enough of what?
Definition
Carbon
Supporting users have an ad free experience!