Investigative Biology Flashcards
What is a negative control?
A control which provides data in the absence of treatment.
What are some ethics of animal studies?
Use the minimum number of animals in a study without compromising the
validity or reliability.
Techniques should be adjusted to minimise negative impact on the animals.
What are some ethics of human studies?
Informed consent
Right to withdraw data
Confidential
No negative effect on human
What is the purpose of a pilot study?
To verify experimental protocols and methods before starting a large scale investigation.
Advantage and disadvantage of in vivo study
Allows study of complex interactions
Expensive and time consuming
Advantage and disadvantage of in vitro study
Simpler and less expensive
Difficult to model complex interactions
Describe correlations
Positive- as one variable increases the other variable increases too.
Negative- one variable increases as the other variable decreases.
What are some things that should be taken into account when evaluating experimental design?
Control of confounding variables
Selection bias
Sample size
Describe random sampling
Allows each member of the population to have an equal chance of being selected.
Describe systematic sampling
Selects members of a population at regular intervals.
Describe stratified sampling
Divides the population into categories that are then sampled proportionally.
Explain what is meant by the term “peer reviewed”
It has been evaluated by experts within the field.
