Cell Recognition and the Immune System

Which of the following does not act as a defence mechanism of the body?

• Antibodies

• Phagocytes

• Lymphocytes

• Antigens

Which enzyme do phagocytes use during phagocytosis?

• Lysozyme

• DNA helicase

• ATP synthase

• Amylase

Which type of cells does HIV target?

• B cells

• Phagocytes

• Memory cells

• T cells

Which of the following is an example of passive immunity?

• Previous exposure to the pathogen

• Vaccination by injection

• Breastfeeding

• Oral vaccination

Which of the following is not one of the roles of an antibody?

• Destroy antigens directly

• Cause agglutination of bacterial cells

• Serves as markers to phagocytes

• Bind the the antigens on non-self material

Which types of cell would a T cell not respond to?

• Virus infected cell

• Unattached bacterial cell

• Cells from another individual

• Cancer cell

If a mutation prevented B cells developing into memory cells, which of the following would be true?

• Individual would have long term immunity

• Individual could have a primary response to a pathogen

• Individual is immune to the original pathogen

• Individual could have a secondary immune response

A new highly infectious disease has developed. what would be the most effective way for a government to prevent further spread of the disease?

• Vaccinate only those at risk

• Develop a medicine to treat the disease

• Educate the population on how ti prevent spreading the disease

• Vaccinate a large percentage of the population

An enzyme inhibitor was introduced that prevented DNA replication. What effect would this have on humoral immunity?

• B cells would be unable to take up surface antigens

• B cells would be unable to produce plasma cells

• B cells would be unable to process antigens

• B cells would be unable to circulate in the blood

A person was infected with a structure that contained a cell wall made of murein and several flagella present. What would be an effective treatment against this?

• Antiviral drugs

• Vaccination

• Fungicidal cream

• Antibiotics