Paper 1

Created by

Theo Thompson

Cards (58)

What are microorganisms that cause disease called 
Pathogens
what are the 4 types of pathogens
Bacteria, fungi, protists and viruses
How can pathogens be spread
Water, air and through direct contact
Examples of viruses  
Measles, HIV, TMV
How are measles spread  
Through sneezing and coughing near people
what are the symptoms of measles  
Fever, red skin rash and can be fatal
What prevention methods are there for measles  
Painkillers, and vacations for young kids
how is HIV spread 
Exchange of bodily fluids like, sexual contact and blood when drug users share needles
What are the symptoms of HIV  
at first flu like, virus attacks the body’s immune system which the causes AIDS
How can you prevent HIV  
antiretroviral drugs, barrier method of contraception and using clean needles
Examples of bacteria  
Salmonella and gonorrhoea
how is salmonella spread  
Bacteria in or on food being ingested
what are the symptoms of salmonella 
fever, abdominal cramps, vomiting and diarrhoea
How can salmonella be prevented  
Poultry being vaccinated against it
How is gonorrhoea spread  
Direct sexual contact it’s and STD
what are the symptoms of gonorrhoea  
Thick yellow or green discharge from vagina or penis, pain when urinating
How can gonorrhoea be prevented  
Treatment with antibiotics and barrier methods of contraception
An example of a fungi  
Rose black spot
How is the rose black spot spread  
Through water and wind
What are the symptoms of rose black spot  
Purple or black spot on leaves, reduces the plants ability to photos
How can rose black spot be prevented  
Fungicides and affected leaves removed and destroyed
an example of protists  
Malaria
what caused the spread of malaria
Mosquitos feed on the blood of infected people then passes it on when they feed and someone who is not infected
What are the symptoms of malaria
Recurrent episodes of fever and can be fatal
how to prevent malaria  
Prevent mosquito vectors breeding, mosquito nets to prevent bites and anti-malaria medicine
How can you control the spread of communicable disease  
Hygiene, isolation, controlling vectors and vaccinations
how does hygiene control the spread of diseases
Hand washing, disinfecting surfaces and machinery, keeping raw meet separate will help try and kill the diseases
How do vaccinations work  
They inject small quantities of dead or inactive forms of pathogens into the body, helps the body to create antibodies for them
What is photosynthesis
It is a chemical reaction in which energy is transferred from the environment as light from the sun to the leaves of a plant
What type of reaction is this
It is endothermic
what absorbs the light energy
Chlorophyll
where is chlorophyll found
In chloroplast
What are the limiting factors for photosynthesis
Temperature, light intensity, carbon dioxide concentration, amount of chlorophyll
What is the word equation for photosynthesis
Carbon dioxide + water - glucose + oxygen
-is light
What is the balanced equation for photosynthesis
6CO2 + 6H2O - C6H12O6 + 6O2
-is light
Why is the rate of photosynthesis low at low temps
As the reactant molecules have less kinetic energy
Why is there a quick decrease of photosynthesis at higher temps
As it is an enzyme-controlled reaction
does carbon dioxide increase or decrease the rate of photosynthesis. Why
Increase. As it is used in photosynthesis
Does light energy increase or decrease photosynthesis
Increase
What will happen if there is little light
Photosynthesis will stop