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Biology Flashcards

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4432536713PATHOGENMICROORGANISM THAT CAUSES ILLNESS OR DISEASE0
4432541654ANTIBODYPRODUCED BY WBC WHEN IMMUNE SYSTEM DETECTS A PARTICULAR PATHOGEN1
4432546668BACTERIABacteria are living cells and can multiply rapidly. Once inside the body, they release poisons or toxins that make us feel ill. BACTERIA GET IN BETWEEN CELLS2
4432562277VIRUSESViruses can only reproduce inside host cells, and they damage the cell when they do this VIRUSES GET INTO CELL3
4432573763DISEASES CAUSED BY VIRUSESinfluenza - flu, colds, Measles, mumps, rubella, chicken pox, AIDS4
4432587625DISEASES CAUSED BY BACTERIAfood poisoning, Cholera, typhoid, whooping cough, gonorrhoea - a sexually transmitted disease5
4432607890WHAT ARE BODY'S DEFENCE MECHANISMS?SKIN, STOMACH ACID, EYELASHES, TEARS, COUGH6
4432611884WHITE BLOOD CELLSWhite blood cells can ingest and destroy pathogens. They can produce antibodies to destroy pathogens7
4432623896VACCINESARE SMALL AMOUNTS OF DEAD / WEAKENED PATHOGENS8
4432634215MMRMEASLES, MUMPS AND RUBELLA9
4432635628EPIDEMICWIDESPREAD OUTBREAK OF AN INFECTIOUS DISEASE WITHIN A COUNTRY10
4432639842PANDEMICA DISEASE THAT IS SPREAD RAPIDLY ACROSS MANY COUNTRIES11
4432643440SYMPTOMS OF AN INFECTIONPAIN, FEVER, RASH, NAUSEA, HEADACHE, COUGHING12
4432646998ANOMALYSOMETHING THAT DEVIATES FROM NORMAL OR EXPECTED13
4432653189DEPENDENT VARIABLEWHAT YOU MEASURE- ON Y AXIS14
4432657550INDEPENDENT VARIABLEWHAT YOU CHOOSE VALUES FOR- ON Y AXIS15
4432660899CONTROL VARIABLEVARIABLES THAT REMAIN CONSTANT OR UNCHANGED16
4432721758WHITE BLOOD CELLS CAN-ingest pathogens and destroy them -produce antibodies to destroy pathogens -produce antitoxins that neutralise the toxins released by pathogens white blood cells do not eat the pathogens - they ingest them17
4518257970DECAYThe breakdown of dead plant and animal material by fungi, bacteria and other organisms. Requires WOW W-warmth O-oxygen W- water18
4518276268RELAY NEURONESNeurones that carry information from a sensory nerve cell to a motor nerve cell19
4518296084NEUROTRANSMITTER20
4518308860CENTRAL NERVOUS SYSTEM (CNS) consists of- the brain and spinal cord21
4518312738PERIPHERAL NERVOUS SYSTEM (PNS) consists of- nerve cells that carry information to or from the CNS. Includes spinal cord and peripheral nerves.22
4518326340RECEPTORS- can detect a change in the environment (stimulus) and produce electrical impulses in response. Sense organs contain groups of receptors that respond to specific stimuli.23
4518331885EFFECTORS-produces a response e.g.muscle contracts to move hand away from stimulus or gland squeezes and releases hormone into blood.24
4518423376SYNAPSEWhere two neurones meet, there is a tiny gap called a synapse. Signals cross this gap using chemicals released by a neurone. The chemical diffuses across the gap makes the next neurone transmit an electrical signal.25
4518428566REFLEX-a way for the body to automatically and rapidly respond to a stimulus to minimise any further damage to the body. stimulus → receptor → sensory neurone → relay neurone → motor neurone → effector → response26
4518444010SENSORY NEURONEA sensory neurone sends impulses (from a sensory receptor) to a relay neurone in the spinal cord/CNS.27
4518453842RELAY NEURONE-carry messages from one part of the CNS to another28
4518456069MOTOR NEURONEA motor neurone sends impulses from the spinal cord/CNS to effector (muscle of gland).29

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