1
Q
What can be done when it is impractical to measure every individual?
A
select a representative sample of the population
2
Q
What determines the appropriate sample size?
A
the extent of the natural variation within a population
3
Q
More variable populations require…
A
a larger sample size
4
Q
A representative sample should…
A
share the same mean and the same degree of variation about the mean as the population as a whole
5
Q
In random sampling…
A
members of the population have an equal chance of being selected
6
Q
In systemic sampling…
A
members of a population are selected at regulated intervals
7
Q
In stratified sampling…
A
the population is divided into categories that are then sampled proportionally
AH Biology
flashcards
Decks in class (48)
# Cards
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1.1a & 1.1b - Health and Safety & Liquids and Solutions21
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1.1c - Separation Techniques19
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1.1d - Detecting Proteins Using Antibodies & Microscopy13
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1.1e - Aseptic Technique and Cell Culture16
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1.2a - Proteomics6
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1.2b - The Synthesis & Transport of Proteins30
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1.2ci - Protein Structure, Ligand Binding and Conformational Change26
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1.2cii - Ligand Binding Changes the Conformation of a Protein20
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1.2ciii - Reversible Binding of Phosphate and the Control of Conformation11
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1.3a - Movement of Molecules Across Membranes26
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1.3b - Ion Transport Pumps and Generation of Ion Gradients16
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1.4a - Coordination7
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1.4b - Hydrophobic Signals and Control of Transcription8
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1.4c - Hydrophilic Signals and Transduction17
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1.4di - Nerve Impulse Transmission21
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1.4dii - Initiation of a Nerve Impulse in Response to an Environmental Stimulus: The Vertebrate Eye20
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1.5a - Cytoskeleton and Cell Division8
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1.5b - The Cell Cycle9
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1.5c - Control of the Cell18
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1.5d - Control of Programmed Cell Death (Apoptosis)9
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2.1a - Health & Safety4
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2.1b - Sampling of Wild Organisms8
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2.1c - Identification and Taxonomy19
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2.1d - Monitoring Populations12
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2.1e - Measuring and Recording Animal Behaviour8
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2.2a - Drift and Selection37
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2.2b - Fitness10
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2.2c - Co-evolution11
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2.3a - Costs and Benefits of Sexual and Asexual Reproduction19
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2.3b - Meiosis13
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2.3c - Sex Determination16
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2.4a - Parental Investment15
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2.4b - Reproductive Behaviours and Mating Systems in Animals20
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2.5a - Parasitism12
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2.5b - Parasitic Life Cycles17
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2.5c - Transmission and Virulence5
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2.5d - Defence Against Parasitic Attack10
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2.5e - Immune Evasion5
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2.5g - Challenges in Treatment and Control10
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3.1a - Scientific Method8
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3.1b - Scientific Literature and Communication7
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3.1c - Scientific Ethics18
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3.2a - Key Terms4
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3.2b - Pilot Study4
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3.2c - Experimental Design35
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3.2d - Sampling7
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3.2e - Reliability11
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3.2f - Presentation of Data19
