Grade VIII – Biology Blood Plasma: The liquid part of blood Red Blood Cells: The most common type of cells in blood; they have no nucleus; they transport oxygen White Blood Cells: Blood cells with a nucleus; they help to protect against pathogens Haemoglobin: The red pigment in red blood, which combines reversibly with oxygen and transports it from lungs to respiring cells Oxyhaemoglobin: The compound formed when oxygen combines with heamoglobin Pathogens: Organisms that cause disease, e.g. bacteria, viruses Phagocytosis: The action of phagocytes, certain white blood cells, when they take in and destroy pathogens Antibodies: Chemicals produced by white blood cells that bind with pathogens and help to destroy them. Grade VIII – Biology Blood Plasma: The liquid part of blood Red Blood Cells: The most common type of cells in blood; they have no nucleus; they transport oxygen White Blood Cells: Blood cells with a nucleus; they help to protect against pathogens Haemoglobin: The red pigment in red blood, which combines reversibly with oxygen and transports it from lungs to respiring cells Oxyhaemoglobin: The compound formed when oxygen combines with heamoglobin Pathogens: Organisms that cause disease, e.g. bacteria, viruses Phagocytosis: The action of phagocytes, certain white blood cells, when they take in and destroy pathogens Antibodies: Chemicals produced by white blood cells that bind with pathogens and help to destroy them.
