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AQA A-Level Biology (Paper 2) Smart practice A mixed round aimed at your weak spots
Unit 5
Energy transfers in and between organisms
Photosynthesis
The light-dependent reaction
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The light-independent reaction
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Limiting factors and investigating photosynthesis
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Respiration
Glycolysis and anaerobic respiration
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Aerobic respiration
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Energy and ecosystems
Energy and ecosystems
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Nutrient cycles
Nutrient cycles
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Unit 6
Organisms respond to changes in their internal and external environments
Stimuli, both internal and external, are detected and lead to a response
Survival and response
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Receptors
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Control of heart rate
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Nervous coordination
Nerve impulses
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Synaptic transmission
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Skeletal muscles are stimulated to contract by nerves and act as effectors
Skeletal muscles and muscle contraction
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Homeostasis is the maintenance of a stable internal environment
Principles of homeostasis and negative feedback
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Control of blood glucose concentration
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Control of blood water potential
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Unit 7
Genetics, populations, evolution and ecosystems
Inheritance
Monohybrid, multiple allele and sex-linked crosses
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Dihybrid crosses, autosomal linkage and epistasis
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The chi-squared test in genetic crosses
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Populations
Populations and the Hardy-Weinberg principle
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Evolution may lead to speciation
Evolution may lead to speciation
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Populations in ecosystems
Populations in ecosystems and population size
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Succession and conservation
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Unit 8
The control of gene expression
Alteration of the sequence of bases in DNA can alter the structure of proteins
Gene mutations and their effects on proteins
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Gene expression is controlled by a number of features
Stem cells: most of a cell's DNA is not translated
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Regulation of transcription and translation
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Gene expression and cancer
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Using genome projects
Using genome projects
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Recombinant DNA technology
Producing and amplifying DNA fragments
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Vectors, transformation, marker genes and gene therapy
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Differences in DNA between individuals of the same species can be exploited
DNA probes, screening and genetic counselling
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Genetic fingerprinting
Genetic fingerprinting
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Unit 9
Comprehension
Comprehension questions
Comprehension: energy transfer and responses
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Comprehension: genetics, ecosystems and gene expression
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