Biology- B3 Part C 0.0 / 5 ? BiologyInfection and ResponseGCSEAQA Created by: 13clarkenCreated on: 29-04-18 21:02 9583101746 Across 1. Plant Defenses: A waxy cuticle on leaves provides a barrier. Surrounded by cell walls made from cellulose also providing a barrier. Layers of dead cells around stems act as barriers (8) 4. .... can relieve symptoms: Painkillers relieve pain but don't attack or kill the pathogen. Other drugs just reduce symptoms, don't do anything to pathogen. Antibiotics actually kill the bacteria. Different antibiotics kills different pathogens (5) 6. Bacteria become ... to antibiotics: Bacteria can mutate. ... bacteria will survive antibiotics and reproduce so population increases. The strain of ... bacteria can cause serious infection (9) 7. Plant Defenses: Produce antibacterial chemicals killing bacteria. Produce poisons which deter herbivores (8) 8. ... of vaccinations: Vaccines help control lots of communicable diseases that were once common in the UK e.g. polio or smallpox. Big outbreaks of disease called epidemics can be prevented if a lot of the population is vaccinated (9) Down 1. ... produce many chemicals to defend themselves. Some chemicals are used as drugs for humans. Aspirin- used as painkiller and lower fever. Found in willow. Digitalis- treats heart conditions, found in foxgloves (6) 3. Plants need ... : Nitrates are needed for proteins so growth can occur. Lack of them causes stunted growth. Magnesium ions are needed for making chlorophyll for photosynthesis, plant will suffer from chlorosis and yellow leaves without it (7, 4) 5. Plant Defenses: Have thorns and hairs. Stop animals touching and eating them. Have leaves that droop and curl when touched. Cleverly mimic other organisms, tricking other organisms into not eating them (10) 9. Some drugs have been extracted from ... Penicillin- found out it killed bacteria in a petri dish, the mould produced the substance (14) 10. A ... antibody is lots of identical Hybridoma cells which are formed when fusing a Tumour cell and a mouse B-lymphocyte. they can bind to whatever you want them to (10)
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