abBio Lab quiz
Card Set Information
abBio Lab quiz
bio lab quiz
The Role of Science:
Gaining knowledge about our world and how it changes.
-changes in the world and changes in science
-science is a process that changes our understanding of the world.
-science involves technology and technology evolves
modify and or develop new hypothesis
examining something such as a behavior or a phenomenon (an observed pattern)
Form a question about what you observed.
A possible or tentative answer to your question (why?)
If/then statements (if the hypothesis is true then you observe your predictiona)
Design an experiment that will TEST your predictions.
look at data from experiment
A group of organisms of the same species that interbreed and live in the same place at the same time .
•Thomas Malthus -1798 British Economist
Observed populations do not grow indefinitely or unchecked.
–Food, space, disease, predation, climate,
human factors, etc.
Model organism - flour beetle
•Flour beetle (Tribolium confusum)
–Quick reproductive time (~100 days)
–Analyze life stages
•Eggs hatch in 5-12 days
•Larval stage lasts for 22-100 days
•Pupal stage lasts ~ 8 days
•Reach adulthood in 7-12 weeks
–Life expectancy ~ 200 days
: population growth is limited
: what limits population growth
: RH1: Food is limiting factor for pop. growth.
: Space is a limiting factor for pop. growth.
: P1: if amount of food is limited, then population growth will be limited.
: if amount of space is limited, then population growth will be limited.
Volume of food (95% flour/5% brewer's yeast) and space (flour/yeast and vermiculite) expressed in cc.
Sections of the scientific paper:
Materials and Methods
short section (one paragraph) summarize
a) give conceptual basis (motivation for study)
b) bring non-specialists knowledge up to a point
Material and Methods:
Explain what was done and how it was done.
Describe the observed results. (no discussion)
a) evaluates the results
b) puts results in context of previous work.
d) next step
e) significance of study
cite works used in paper