How does a mosquito infect someone - use all key words
Mosquitoes carries a bacteria called Protanzoan which can be caught- causes malaria when a mosquito pierces/bites the skin of a person hence transfers Protozoan into the blood
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How can pathogens spread -airbourne
Pathogens can be carried in air by droplets when you sneeze or cough- Influenza Virus that can be inhaled
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How can pathogens spread through body fluids
Exchanging of blood can cause pathogens to spread e.g sharing needles to inject stuff or through sex e.g HIV
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How can a vector housfly infect someone?
Housefly contain the bacteria dysentery that can land on food and contaminate it by infecting it hence when food is eaten will infect person
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How can pathogens spread using water fluid
drinking contaminated water or dirty water may contain bacteria and cause cholera
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How can pathogens spread directly
Comining in contact with contaminated or wet surfaces e.g through skin can catch pathogens
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How can pathogens spread food and how is it cause
by eating contaminated food e.g can cause food poisoning and caused when food is under cooked or kept out for too long
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why does bio mass bio energy decrease as you go up the tropic level
Through storage, movement, excretion, storage, and microbes when they decompose when animals die
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How comes tropic levels usually only go up to 4
since threr is not enough biomass in the top level to provide energy needed by another tropic level
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What is speciation
The formation of new species that are geographically separate and therefor can no longer breed with original species
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Hemeostatis
is the maintaining of a stable constant environment i the body
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What is species
a group of organisms that can interbreed to produce a fertile offspring
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Biodiversity
measure of the total no of differemt species in an area
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Autotrophic
organisms that produce their own food
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Heterotopic
organism that eat or digest other organsm
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What are Adaption s
where organism evolve characteristics that allow them to survive
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What are Genes
short section of DNA found on chroms that code for a specific protein
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What are Alleles
different forms of a gene
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What is a Dominant Allele
characteristic that will always be expressed
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What is the definition for a Genetic disorder
disorder caused by a faulty recessive allele
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What is Sickle cell disoder
disorder caused by faulty allele - red blood cells become deformed
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What is the Dermis
layer of skin where nerve endings + blood vessels are found
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What are Axons
carries the impulses from the cell body
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What are Dendrons
carries impulses to the cell body
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What are receptor cells
collect info & detect stimuli - send electrical impulses along sensory nerves to CNS
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What are Parasites
take what they need without giving anything back
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What are Genotype
the alleles 4 certain characteristic that r found in an organism
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What are Phenotype
characteristics that a certain set of alleles cause
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What are hormones
chemil msgr prod in endochrine gland travel in blood 2 act. target cell
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What are Neurone
cell that transmits electrical impulses in the nervous system
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What are drugs
chemlcal messengrs that affects CNS & affects the way you behave
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Other cards in this set
Card 2
Front
How can pathogens spread -airbourne
Back
Pathogens can be carried in air by droplets when you sneeze or cough- Influenza Virus that can be inhaled
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