Controlling microbial growth WK4 L3 Flashcards
(33 cards)
HOW ARE INFECTIONS CAUSED?
MICRO-ORGANISIMS ENTER A HOST AND BEGIN TO MULTIPLE
ARE ALL MICRO-ORGANISIMS BAD FOR US?
NO
WHAT HAPPENS WHEN BAD MICRO-ORGANISIMS MULTIPLE?
THEY CAUSE DISEASE AND TAKE US AWAY FROM HOMOSTASIS
WHAT ARE SIGNS OF A DISEASE?
OBJECTIVE AND CAN BE MEASURED VIA VITALS
WHAT ARE SYMPTOMS OF A DISEASE?
SUBJCTIVE AND REPOSRTED VIA PAITENT
WHAT ARE THE STAGES OF INFECTION
INCUBATION - PRODROMAL - ILLNESS - DECLINE - CONVALESCENCE
WHAT IS THE INCUBATION PERIOD?
WHEN THE VIRUS FIRST ENTERS THE BODY AND START TO GROW
WHAT IS THE PRODOMAL PERIOD?
WHERE THE VIRUS IS MULTIPLYING AND YOU ARE SHOWING VERY MILD SYMPTOMS
WHAT IS THE PERIOD OF ILLNESS?
COMPLETE SYMPTOMS - INFECTIOUS STATE
WHAT IS THE PERIOD OF DECLINE?
SYMPTOMS GET LESS AND VIRUS NUMBERS DECLINE
WHAT IS THE PERIOD OF CONVALESCENCE?
RECOVERY PERIOD
WHAT IS PATHOGENICITY?
HOW EFFECTIVELY DOES IT CAUSE DISEASE
WHAT IS VIRULENCE?
HOW BAD IS THE DISEASE
WHAT ARE VIRULENCE FACTORS?
FACROS THAT ENHANCE TO ABILITY OF A MICROBE TO CAUSE DISEASE
WHAT ARE THE TYPES OF VIRULENCE FACTORS?
TOXINS - ADHEASIONS - EVASIVE & INVASIVE
WHAT ARE THE TYPES OF TOXINS?
ENDOTOXINS AND EXOTOXINS
WHAT ARE ENDOTOXINS?
MOLECULES THAT ATTACH TO THE CELL WALL - CAUSE HOST IMMUNE REACTIONS
WHAT ARE EXOTOXINS?
MOLECULES RELEASED FROM THE CELLS (EXOCYTOSIS) - ATTACK MOLECULES THAT ATTACK & KILL CELLS
WHAT ARE THE TYPES OF EXOTOXINS?
CYTOTOXINS - CELLS
NEUROTOXINS - NERVOUS SYSTEM
ENTEROTOXINS - DIGESTIVE TRACT
WHAT DOES ENTERO MEAN?
OF THE DIGESTIVE SYSTEM (INTESTINES)
WHAT FACTORS AFFECT MICROBE GROWTH
NUTRIENTS - MOISTURE - TEMPERATURE - HP - OSMOTIC PRESSURE - ATMOSPHERIC PRESSURE - GASEOUS ENVIRONMENTS
WHAT IS STRELISATION?
100.00% ELIMINATION OF ALL MICROBES
WHAT IS DISINFECTION?
ELIMINATION OF MOST OR ALL PATHOGENS FROM FRON NO LIVING THINGS (EXCEPT ENDOSPORES)
WHAT IS SANITISATION?
REDUCTION OF MICROBIAL POPULATIONS TO LEVELS CONSIDERED SAFE BY THE PUBLIC HEALTH SAFE STANDARDS
