Response

1. B50 Sense organs? Stimulus Response D E C B A F Synapses? Impulse type: Neurone Synapse

2. Internal controls: how/why? Hormones B51 Transported by Secreted by IVF Contraception Controlling fertility Fertility drugs

3. Medicinal Drugs Recreational Testing drugs Legal Illegal In the lab Prescribed Volunteers Patients Double-blind Placebo Impact Addiction Clinical trials Cannabis In sport... Thalidomide Developed as a … Used for… Caused … Then … Now… Statins are used for…

4. B53 Need new ones because eg involves Vaccination Leads to White blood cells Defences Identify by Disease causers Types of microbe Make us ill due to Fungi Bacteria Viruses discovered Make us ill by Semmelweiss Can be treated by Can’t be treated by Can stop working due to because eg

5. Animals may be adapted to survive in dry and arctic environments by 1. 2. 3. 4. B54 Organisms have ____________ to help them ____________ in a habitat Extremophiles may be tolerant to high levels of 1)___________ , 2) _____________ or 3) ___________ Environmental change may affect the distribution of organisms. Change can be caused by Change can be measured by Animals compete for Living factors e.g. Non-living indicators e.g. Plants compete for Living indicators Non-living factors e.g. Plants may be adapted to survive in dry environments by 1. 2. 3. e.g. e.g.

6. The information that results in plants and animals having similar characteristics to their parents is carried by _________ which are passed on in the ______ cells (_________) from which the offspring develop. B55 Contains _______ made of _____ and carried on long _____________ Variation is due to Genetic variation and its control Plants Embryo transplants where… Animals Produces 4 techniques Genetic engineering Involves Concerns because Used to

7. B56 • The amounts of __________ and __________ contained in living things always get less at each stage of a _________________ from __________ onwards. Biomass is lost as _____________ products and used to produce ___________ in ____________ . This is used for ___________ and to control ____________________ . Only a small amount is used for _______________ . • (Waste, growth, energy, body temperature, biomass, plants, respiration, energy, movement, food chain) Pyramid of ________ Pyramid of ________ When plants or algae are eaten by animals the carbon becomes part of the _________ and _________ in the animals body carbon dioxide in the air 4 ________Cycle processes: 1. 2. 3. 4. 5. 4 1 Carbon compounds in plants include 1. 2. 3. 1 4 carbon compounds in animals 2 carbon compounds in plants 3 3 carbon compounds in decomposers 5 Microbes digest materials faster when the conditions are… fossil fuels

8. B57 Evolution Particular genes or accidental changes in genes of plants or animals may give them characteristics which enable them to survive better. Over time this may result in entirely new species. There are different theories of evolution. __________’s theory is the most widely accepted Only slowly accepted because 1. 2. 3. Stages in explaining natural selection Where new forms of a gene result from ______________ there may be relatively rapid change in a species if the environment changes.