Specimen Paper, Biology 1H
Q1) a) Hormones control the monthly release of an egg from the woman’s ovaries. 1 b) Hormones also control the thickness of the lining of her womb. 1 c) Hormones given to stimulate the release of eggs are called LH (Luteinising Hormone) drugs. X Q2) This is because the plant is positively phototropic and therefore a plant grows towards the direction of a plant because the auxins of a plant move towards the sun and then the plant turns and starts to grow at that direction. X Q3) a) Dandelions have a very strong, firm root which means it would be hard for pets like dogs to pull it out and also they have a defence in the form of spikes coming off the plant meaning animals would attempt to stay away from the dandelion. 1 b) Goose grass is adapted to living alongside the hedges because they are much taller than the hedges meaning they can easily compete and successfully gain a lot of sunlight to perform photosynthesis quite easily. 2 Q4) a) It is difficult to kill viruses inside the body because viruses move inside of your cells so you can’t kill them without harming yourself. A vaccine contains a dead or inactive form of the virus. The vaccine stimulates the body to produce antibodies and memory cells. 3 b) Between the years 1990 and 1992 atleast 30% of the children’s population had been vaccinated against Measles, Mumps and Rubella yet there was not a large spike in the reading of children gaining autism as between these years there was only an increase of 900,000. This helps show there is not a positive correlation between MMR vaccines and autism because in the latter years of the graph, for example between the years 1995 and 1996 there was a very sudden spike in cases of autism of a new 4,000,000 children with autism. 3 Q5) When the heather photosynthesis and gains energy from the sun it shall immediately start to use it for respiration and it shall use the glucose for this so energy has already been reduced from its starting point....
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