CIE AS BIOLOGY INFECTIOUS DISEASE FINAL EXAM
ACTUAL QUESTIONS AND CORRECT ANSWERS ALREADY
GRADED A+ GUARANTEED SUCCESS
What are disease carriers?
People who spread the pathogen but lack symptoms
Why is cholera prevalent in the tropical and sub-tropics?
Large cities with hot and humid climates that have no proper sewage system
What is the transmission cycle?
The passage of a pathogen from one host to another
What do control methods attempt to break of a disease?
The transmission cycles
What are the two methods of diagnosis for cholera?
Dipstick test of rectal swabs or microscopic examination of faecal samples for Vibrio
Cholerae
What are the two ways infected persons with cholera are treated?
Oral rehydration therapy or solution given intravenously
How is cholera prevented?
Washing hands, introducing toilets with systems to dispose of feaces, boiling water,
washing fruits & vegetables
How is malaria transmitted?
Through the bite of a female Anopheles Mosquito/through transfusion when
unsterile needles are reused
What is an endemic disease?
disease that is always present in a population
, What is the incidence of a disease?
the number of new cases in a particular time period
What is the prevalence of a disease?
the number of cases at a particular moment in time
What is an epidemic?
a rapid outbreak of infection that affects many people
What is a pandemic?
global disease outbreak
What type of pathogen causes cholera?
Bacteria - Vibrio Cholerae
What type of pathogen causes malaria?
Protoctist - Plasmodium
What type of pathogen causes AIDS?
Virus - HIV
What type of pathogen is tuberculosis caused by?
Bacteria - Myobacterium tuberculosis/bovis
How is cholera transmitted?
contaminated water or food
What is the site of action of cholera?
Small intestine
What impact does the secreted toxin, choleragen have on the body?
It disrupts functions in the epithelium of the small intestine by causing it to release
salts and water from the blood, rather than absorb them
What is the main symptom of cholera?
Severe diarrhoea with the appearance of 'rice water' that causes fatal dehydration
Why is Malaria more prevalent in some places more than others?
ACTUAL QUESTIONS AND CORRECT ANSWERS ALREADY
GRADED A+ GUARANTEED SUCCESS
What are disease carriers?
People who spread the pathogen but lack symptoms
Why is cholera prevalent in the tropical and sub-tropics?
Large cities with hot and humid climates that have no proper sewage system
What is the transmission cycle?
The passage of a pathogen from one host to another
What do control methods attempt to break of a disease?
The transmission cycles
What are the two methods of diagnosis for cholera?
Dipstick test of rectal swabs or microscopic examination of faecal samples for Vibrio
Cholerae
What are the two ways infected persons with cholera are treated?
Oral rehydration therapy or solution given intravenously
How is cholera prevented?
Washing hands, introducing toilets with systems to dispose of feaces, boiling water,
washing fruits & vegetables
How is malaria transmitted?
Through the bite of a female Anopheles Mosquito/through transfusion when
unsterile needles are reused
What is an endemic disease?
disease that is always present in a population
, What is the incidence of a disease?
the number of new cases in a particular time period
What is the prevalence of a disease?
the number of cases at a particular moment in time
What is an epidemic?
a rapid outbreak of infection that affects many people
What is a pandemic?
global disease outbreak
What type of pathogen causes cholera?
Bacteria - Vibrio Cholerae
What type of pathogen causes malaria?
Protoctist - Plasmodium
What type of pathogen causes AIDS?
Virus - HIV
What type of pathogen is tuberculosis caused by?
Bacteria - Myobacterium tuberculosis/bovis
How is cholera transmitted?
contaminated water or food
What is the site of action of cholera?
Small intestine
What impact does the secreted toxin, choleragen have on the body?
It disrupts functions in the epithelium of the small intestine by causing it to release
salts and water from the blood, rather than absorb them
What is the main symptom of cholera?
Severe diarrhoea with the appearance of 'rice water' that causes fatal dehydration
Why is Malaria more prevalent in some places more than others?
