Topic 3- Infection & Response Keywords Flashcards
Communicable
Infectious
Pathogen
Microorganism that causes disease, e.g. bacteria, fungi, virus, protist
Measles
Viral disease with symptoms of a fever and red skin rash
HIV
Virus that causes a flu-like illness but damages the immune system and develops into AIDS
Tobacco mosaic virus (TMV)
Plant virus causing discolouration of the leaves that affects the growth of the plant due to lack of photosynthesis
Salmonella
Bacterial disease which causes food poisoning
Gonorrhoea
STD with symptoms of a thick yellow/green discharge and pain when urinating
Rose black spot
Fungal plant disease where purple/black spots develop on the leaves which turn yellow and drop off
Malaria
Disease caused by a protist where mosquitos are the vector
Vector
An organism that transports a disease from person to person
Phagocytosis
White blood cells engulf and digest pathogens
Antibodies
Produced by white blood cells to help kill pathogens
Vaccination
Inserting small amounts of dead or inactive forms of a pathogen to stimulate antibody production
Antibiotics
Medicines that cure bacterial infections by killing bacteria
Placebo
Fake drug
Double-blind trial
A clinical trial where both the patient and the doctor do not know if the patient has been given a real drug or the placebo (fake drug)
Monoclonal antibodies
Antibodies specific to one binding site on one protein antigen
Hybridoma
A combination of a lymphocyte with a tumour cell
Nitrate deficiency
Causes stunted growth in plants
Magnesium deficiency
Causes chlorosis (yellowing of leaves) in plants
Physical
Plant defence responses to resist invasion of microorganisms, e.g. tough waxy cuticle
Chemical
Plant defence responses to resist invasion of microorganisms, e.g. poisons
Mechanical
Plant defence responses to resist invasion of microorganisms, e.g. leaves which droop when touched
