Defence against Disease – Key Words
Fill in the blanks:
A micro-organism that can potentially cause disease.
A molecule that triggers an immune response; usually large, e.g. protein, polysaccharide, glycoprotein.
A protein secreted by a B lymphocyte; each one is specific to a different non-self antigen.
A white blood cell that causes a humoral response to infections by secreting antibodies; matures in the
bone marrow.
A white blood cell that causes a cellular response to infection; matures in the thymus.
Term given to describe the way in which B lymphocytes produce antibodies in response to infection.
Term which describes the way in which T lymphocytes respond to an antigen-presenting cell.
Type of B lymphocyte which releases antibodies; formed when a B lymphocyte divides and produces
clones.
Type of B lymphocyte that remains dormant in the blood and recognises antigens if they enter the blood
again so that antibody-producing cells are produced faster than before.
A ‘self’ cell that has been infected; now has the pathogen’s antigens on its cell surface.
Chemicals released to help phagocytes squeeze through gaps in the capillary walls.
Organelles present in large amounts inside phagocytes; contain enzymes to digest the pathogen.
Type of white blood cell that ingests and digests pathogens.
Term given to process involving phagocytes.
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Non-specific inflammatory response 8. Antigen
Histamines
9. T Lymphocyte
Antibody
10. Phagocyte
Pathogen
11. Plasma cell
Memory cell
12. Humoral response
Lysosomes
13. Antigen-presenting cell
B Lymphocyte
14. Cellular response
Defence against Disease – Key Words
Match each description to a word/term in the box below.
A micro-organism that can potentially cause disease. Pathogen
A molecule that triggers an immune response; usually large, e.g. protein, polysaccharide, glycoprotein.
Antigen
A protein secreted by a B lymphocyte; each one is specific to a different non-self antigen. Antibody
A white blood cell that causes a humoral response to infections by secreting antibodies; matures in the
bone marrow. B Lymphoctye
A white blood cell that causes a cellular response to infection; matures in the thymus.
T Lymphocyte
Term given to describe the way in which B lymphocytes produce antibodies in response to infection.
Humoral response
Term which describes the way in which T lymphocytes respond to an antigen-presenting cell.
Cellular response
Type of B lymphocyte which releases antibodies; formed when a B lymphocyte divides and produces
clones. Plasma cell
Type of B lymphocyte that remains dormant in the blood and recognise antigens if they enter the blood
again so that antibody-producing cells are produced faster than before. Memory cell
A ‘self’ cell that has been infected; now has the pathogen’s antigens on its cell surface.
Antigen-Presenting Cell
Chemicals released to help phagocytes squeeze through gaps in the capillary walls. Histamine
Organelles present in large amounts inside phagocytes; contain enzymes to digest the pathogen.
Lysosomes
Type of white blood cell that ingests and digests pathogens. Phagocyte
Term given to process involving phagocytes. Non-specific inflammatory response