Biology 5090 · O Level
Disease
86 practice questions on Disease, with worked solutions and instant marking.
Transfer of the malarial parasite from mosquitoes to humans occurs when
May/June 2015
The malarial parasite can be transmitted from mosquitoes to humans when
May/June 2015
Fig. 4.1 illustrates some of the organs in a person that may be harmed by drug use.
May/June 2015
Syphilis and HIV are both transmitted through sexual contact.
May/June 2015
The graphs illustrate how the percentage of smokers and the number of lung cancer deaths changed in a country from 1950 to 2000. What might have led to the change in the number of deaths from lung cancer between 1950 and 1975?
May/June 2016
By what route is malaria typically passed from one human to another?
May/June 2016
Several factors linked to coronary heart disease are listed. Which of these lower the risk of coronary heart disease?
May/June 2016
The graphs illustrate how the percentage of smokers and the number of lung cancer deaths in a country changed between 1950 and 2000. What might have led to the change in the number of deaths from lung cancer between 1950 and 1975?
May/June 2016
By what usual route is malaria passed from one person to another?
May/June 2016
Malaria is an illness caused by a parasite that is passed from one person to another through a vector.
May/June 2016
Define the term drug.
May/June 2016
Which row identifies the malarial parasite and the vector responsible for transmitting it?
May/June 2017
Which row gives a sign, a symptom and a treatment for syphilis in males?
May/June 2017
Which row identifies a factor that may lead to coronary heart disease?
May/June 2017
Which row shows the correct pairing of a method used to control malaria with an explanation of how it works?
May/June 2017
Explain the measures used, apart from drugs, to cut the spread of malaria.
May/June 2017
The diagram illustrates the proportions of injecting and non-injecting drug users who have HIV/AIDS in one specific region of the world. What explains the difference between these two groups of drug users?
May/June 2018
What is the most effective method of preventing the spread of the human immunodeficiency virus (HIV)?
May/June 2018
Which measure will not assist in reducing the transmission of the malarial vector within the human population?
May/June 2018
Which statements concerning heroin use are correct?
May/June 2019
In what way does an anti-malarial drug control malaria?
May/June 2019
Which disease is closely linked to cigarette smoking?
May/June 2019
What sign of syphilis can appear many years after infection if treatment is not given?
May/June 2019
What functions do the female mosquito and the malarial pathogen each have in the transmission of malaria?
May/June 2021
The table lists four methods by which diseases can spread from one person to another. Which row indicates the methods by which HIV can be transmitted?
May/June 2021
The diagram displays the teeth in the lower jaw of a human being.
May/June 2021
The illustration depicts an elm tree.
May/June 2021
People whose diet is high in fat and who smoke have two major risk factors for which disease?
May/June 2022
Malaria is transmitted by the ……1……, which functions as a ……2…… for the disease. Which terms correctly fill in the sentence?
May/June 2022
An organism, for example a mosquito, can transfer a disease-causing organism from one host to another. What term is used for the mosquito?
May/June 2022
A number of statements about the human immunodeficiency virus (HIV) are given. Which of these statements about HIV are incorrect?
May/June 2022
What measure would help to reduce the transmission of malaria?
May/June 2023
The table presents death rates from lung cancer in a country for smokers and non-smokers. What conclusions can be drawn from the data?
May/June 2023
Which diagram shows the roles of a mosquito and $\text{Plasmodium}$ in malaria?
May/June 2023
The bar chart displays the percentage of women who gave birth to babies with low birth weight. Among these women, some smoked and others did not. What does the bar chart show?
May/June 2023
By what route is the malarial parasite passed to humans?
May/June 2024
Some fatal diseases are linked to smoking tobacco. In 1990, the government of a country started a campaign to encourage people to give up smoking. The graph shows the numbers of people dying from smoking-related diseases in the years following 1990. If the number of people dying from smoking-related diseases kept falling at the same rate, in which year would there be no deaths caused by smoking?
May/June 2024
Records of the yearly number of people who suffer from malaria in countries across the world have been gathered for many years. Some of these data are shown in the table. Which country had a number of people suffering from malaria in 2019 $50\%$ lower than in 1990?
May/June 2024
Which disease has a strong link with cigarette smoking?
May/June 2024
The table gives the estimated number of deaths in England each year from 2009 to 2019 that were caused by smoking. Using the information in the table, which statement is correct?
May/June 2025
What is a technique used to control the malarial vector?
May/June 2025
Which row identifies the kind of pathogen responsible for malaria and how it is transmitted?
May/June 2025
A bacterium infects the small intestine and releases a toxin. This toxin draws water out of the cells into the small intestine by osmosis, leading to diarrhoea and severe dehydration. Which disease is described?
May/June 2025
A population’s dental health can be assessed by calculating the average number of decayed, missing or filled teeth for each person. This is known as the DMFT. The graph presents the DMFT for four countries over the period from 1980 to 1995. Australia and the USA have fluoride added to their water, whereas Japan and Belgium do not. The statements below were made. Which statements are supported by the graph?
Oct/Nov 2015
The graph illustrates the relative risk of lung cancer in relation to the number of years of smoking and the number of cigarettes smoked per day. The statements below were made. Which of these statements are supported by the data in the graph?
Oct/Nov 2015
Which malaria-control method is effective against both the adult and larval stages of the mosquito?
Oct/Nov 2015
Some indicators of syphilis are shown here. 1 fever 2 loss of appetite 3 skin ulcers that fail to heal 4 skin rash 5 tiny, painless sores 6 swelling of lymph nodes What are the initial signs of syphilis?
Oct/Nov 2015
The graph compares the death rates from coronary heart disease in two different countries. Which factor could not account for the difference between the two countries?
Oct/Nov 2015
Which malaria control method is effective against both the adult mosquito and its larval stage?
Oct/Nov 2015
What effects does consuming a large amount of alcohol have on the body?
Oct/Nov 2016
How many times does a mosquito that is not infected need to feed on human blood in order to pass the malarial parasite through the human population?
Oct/Nov 2016
How many feeds on human blood must an uninfected mosquito make before it can pass the malarial parasite on to the human population?
Oct/Nov 2016
Syphilis is a disease that can spread from person to person.
Oct/Nov 2016
Table 3.1 presents the percentage of smokers in one country together with the number of lung cancer deaths in that same country from 1920 to 2010.
Oct/Nov 2016
Describe how the mosquito helps disease to spread.
Oct/Nov 2016
Three statements about malarial parasites are given. Which methods may be used to control malaria?
Oct/Nov 2017
In 2005, an estimated 2.3 million people worldwide died from HIV-related causes. In 2011, the estimated number of HIV-related deaths worldwide was 1.7 million. What is not a possible explanation for this trend?
Oct/Nov 2017
Three statements about malarial parasites are given below. Which methods can be used to control malaria?
Oct/Nov 2017
The graph illustrates death rates from liver disease in two different countries. What might account for the gap between the two countries?
Oct/Nov 2018
Which row identifies a disease together with the pathogen that causes it?
Oct/Nov 2018
What kind of organism serves as the vector for the parasite that causes malaria?
Oct/Nov 2018
Which row lists a disease and the pathogen responsible for it?
Oct/Nov 2018
Which risk is significantly raised by the nicotine present in cigarette smoke?
Oct/Nov 2019
How many blood meals on human blood must an uninfected mosquito take in order to pass the malarial parasite on to people?
Oct/Nov 2019
How many times does an uninfected mosquito need to feed on human blood in order to pass the malarial parasite through the human population?
Oct/Nov 2019
Syphilis is an infectious illness spread through sexual contact. A person’s blood can be checked for antibodies that are made after infection by the pathogen responsible for syphilis.
Oct/Nov 2019
Three statements about malarial parasites are given. Which methods may be used to control malaria?
Oct/Nov 2020
Three statements concerning malarial parasites are given. Which methods may be used to control malaria?
Oct/Nov 2020
Which row gives a cause, a symptom and a treatment for syphilis in males?
Oct/Nov 2020
The diagram illustrates two identical cigarettes before smoking and one cigarette after smoking.
Oct/Nov 2020
HIV infection can lead to death from AIDS. The graph illustrates AIDS-related deaths from 1990 to 2015 in a country. What is the most plausible explanation for the pattern in the number of AIDS-related deaths after 2005?
Oct/Nov 2021
The table presents statements about HIV. Which row shows the statements correctly as true or false?
Oct/Nov 2021
Define what is meant by the term drug.
Oct/Nov 2021
Which activity is most likely to lead to lung disease?
Oct/Nov 2022
Which measures may be used to control the malarial pathogen?
Oct/Nov 2022
Explain the advantages and disadvantages of using insecticides in agriculture.
Oct/Nov 2022
How is the microorganism responsible for cholera described, and by what route is it passed on?
Oct/Nov 2023
What does the term pathogen mean?
Oct/Nov 2023
Malaria can be controlled through the use of mosquito nets treated with insecticide and placed over beds. Using these bed nets lowers the number of bites from infected mosquitoes. The graph illustrates the effect of using bed nets on the average number of mosquito bites in a group of people. Which conclusion can be drawn from these data?
Oct/Nov 2023
In many countries, the spread of HIV decreased between 1990 and 2010. Which measure helped to bring about this decrease?
Oct/Nov 2024
What is the usual method by which malaria is passed from one person to another?
Oct/Nov 2024
Which statement describes the link between smoking tobacco and emphysema?
Oct/Nov 2025
What prevents pathogens from getting into the human body?
Oct/Nov 2025
Viruses are able to reproduce only within cells. Inside a living cell, a single Herpes simplex virus multiplies quickly and makes 4000 copies in 12 hours. What is the highest number of viruses that could be formed in 36 hours from one Herpes simplex virus?
Oct/Nov 2025
What effect does regular excessive consumption of alcohol have?
Oct/Nov 2025
HIV and MRSA are two distinct microorganisms that are pathogens.
Oct/Nov 2025