Lecture 1 Flashcards
Exam
What is abiotic ?
non-living
What is Biotic?
living
Scientific method
O, Q H, P, E ,R
A hypothesis has to have:
Relevance, testability, and be falsifiable
A strong research study has to have :
large sample size, random sample, isolated/single, control variable no resrach bias.
Structure and function
A structure determines function
Information flow
Information is stored, received, transmitted, used
Transcription
DNA–> RNA
Translation
RNA–> PROTEIN
Dna
info storage
Rna
info transfer
Energy transformation
Always linear, comes from sun, not created or destroyed but converted.
Matter transformation
C02–> Sugars (plants) {think circle}
Evolution
population change over time to adapt to environment
Adaptation
Driven by natural selection , survival of the fittest
What is a science
study of all things living/non-living natural - via scientific method
Developing an experiment
Sample , isolated, control , researcher bias, organisms
Sample
Should represent subset of population
-choose at random
-big is better
Experimental variable
an independent variable that is manipulated to determine impact of dependent variable
Controls
Test: unknown
Known ( positive control) meaning something wee will know to work
Placebo: known to have no effect ( negative control)
Research Bias
When scientist beliefs/goals can influence the study
Confounds
alternative explanations
Model systems : considerations
cost to maintain/ house, easy to manipulate
Diversity ( evo)
Different types of organisms
Unity (evo)
structure and function
