when is a representative sample of a population selected
when it is impractical to measure every individual
what determines sample size
the extent of the natural variation within a population
do more variable populations require a smaller or larger sample size
larger
what does a representative sample need to do
share the same mean and the same degreee of variation about the mean as the population as a whole
what are the different types of sampling that can be used
- random
- systematic
- stratified
what is random sampling
this is when members of the population have an equal chance of being selected
what is systematic sampling
this is when members of a population are selected at regular intervals
what is stratified sampling
the population is divided into categories that are then sampled proportionally
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1.1.1 health and safety in the lab5
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1.1.2 liquids and solutions8
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1.1.3 separation techniques17
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1.1.4 detecting proteins using antibodies7
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1.1.5 microscopy2
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1.1.6 aseptic technique and cell culture11
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1.2.1 proteins - the proteome9
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1.2.2 the synthesis and transport of proteins32
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1.2.3 protein structure, ligand binding, conformational change54
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1.3.1 membrane proteins; movement of molecules across membranes23
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1.3.2 ion transport pumps and generation of ion gradients19
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1.4.1 communication and signalling; coordination7
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1.4.2 hydrophobic signals and control of transcription9
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1.4.3 hydrophilic signals and transduction20
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1.4.4 nerve impules transmission19
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1.4.4.2 the vertebrate eye23
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1.5.1 the cytoskeleton and cell division8
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1.5.2 the cell cycle / 1.5.3 control of the cell cycle31
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1.5.4 control of programmed cell death12
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3.2.1 independent and dependent variables11
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3.2.2 confounding variables5
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3.2.3 controls / 3.2.4 in vivo and in vitro11
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3.3 sampling8
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3.1.1 scientific method10
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3.1.2 scientific literature and communication / 3.1.3 scientific ethics6
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3.2 experimentation4
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3.2.4 reliability10
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3.2.5 presentation of data10
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3.3.1 reporting and critical evaluation of biological research; background information7
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3.3.2 reporting and evaluating experimental design10
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3.3.3 data analysis5
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3.3.4 evaluating results and conclusions6
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3.1.2 scientific ethics5
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3.2.1 pilot studies3
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2.1 health and safety5
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2.1.2 sampling of wild organisms8
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2.1.3 identification and taxonomy27
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2.1.4 monitoring populations8
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2.1.5 measuring and recording animal behaviour8
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2.2.1 evolution: drift and selection34
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2.2.2 evolution: fitness9
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2.2.3 coevolution9
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2.3.1 variation and sexual reproduction17
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2.3.2 meiosis7
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2.3.3 sex determination20
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2.4.1 sex and behaviour; parental investment13
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2.4.2 reproductive behaviours and mating systems in animals14
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2.4.1-2 parasitism - niche and lifecycle25
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2.4.3 transmission and virulence9
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2.4.4 defence against parasitic attack19
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2.4.5 immune evasion6
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2.4.6 challenges in treatment and control12
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things i often forget72
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things i fucked on the past papers x33
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things i forget a lot7
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things im getting wrong on quizlet tests13
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past paper questions67
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more things im forgetting ill probably delete this deck later x35
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10 marker questions1
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very last minute points to understand37
