Communicable Disease - exam practice
Communicable Disease
Question 1 of 5
Diseases that are transmitted from person to person are called communicable diseases.
What name is given to a microorganism that causes disease?
State three ways in which communicable diseases can be transmitted.
Which two defence systems prevent microorganisms infecting the human body?
Give two ways in which white blood cells protect us from disease.
The Human Immunodeficiency Virus (HIV) is a pathogen.
Give one way in which HIV can spread from one person to another.
How do viruses cause the symptoms of disease?
Give one reason why viruses are not classed as cells.
Why will antibiotics not treat an infection with HIV?
Why is it difficult to develop safe drugs to destroy viruses?
Chlamydia is a sexually transmitted infection that can be treated using antibiotics.
People infected with Chlamydia are more likely to be infected with other STIs.
Explain how people become infected with both Chlamydia and other STIs.
State why Chlamydia can be described as a communicable disease.
Give one way the transmission of Chlamydia can be prevented.
The human body's first line of defence against infection is to stop pathogens from entering the body.
If pathogens pass the first line of defence, the body needs to deploy the second line of defence, the immune system.
Describe how the human body:
- stops pathogens from entering the body
- defends itself against pathogens once they have entered the body
White blood cells are part of the immune system.
White blood cells help the body to defend itself against pathogens like bacteria and viruses.
Describe how bacteria and viruses cause infections and describe how the immune system defends the body against these pathogens.
A man goes to the doctor.
The man has a sore throat and a high temperature.
The doctor diagnoses the man with strep throat, a bacterial infection.
Name the type of medicine that the doctor will prescribe for the treatment of the man's disease.
Another man visits the same doctor.
The man has been infected with the cold virus and also has a sore throat and a high temperature.
Can the doctor prescribe this man the same medicine?
Explain your answer.