Describe the sequence of events that occurs during a primary immune response with reference to the roles of: • macrophages • B-lymphocytes, including plasma cells • T-lymphocytes, limited to T-helper cells and T-killer cells
1 Answer
Explain what is meant by an antigen and state the difference between self antigens and non-self antigens
1 Answer
Discuss the biological, social and economic factors that need to be considered in the prevention and control of cholera, malaria, TB and HIV (details of the life cycle of the malarial parasite are not expected)
1 Answer
Explain how cholera, malaria, TB and HIV are transmitted
1 Answer
State that infectious diseases are caused by pathogens and are transmissible
1 Answer
Describe gas exchange between air in the alveoli and blood in the capillaries
1 Answer
Describe the functions in the gas exchange system of cartilage, smooth muscle, elastic fibres and squamous epithelium
1 Answer
Describe the functions of ciliated epithelial cells, goblet cells and mucous glands in maintaining the health of the gas exchange system
1 Answer
Recognise trachea, bronchi, bronchioles and alveoli in microscope slides, photomicrographs and electron micrographs and make plan diagrams of transverse sections of the walls of the trachea and bronchus
1 Answer
Recognise cartilage, ciliated epithelium, goblet cells, squamous epithelium of alveoli, smooth muscle and capillaries in microscope slides, photomicrographs and electron micrographs
1 Answer
BNO Team