Chapter 1 Flashcards
What is science ?
Seeks natural cause for natural phenomena
A body of knowledge and and evidence base process for acquiring that knowledge
What is biology?
The study of life
Hypothesis
A possible explanation for an observation that is testable and falsifiable
Independent variable
Factor that scientist manipulates or changes is
X axis
Dependent variable
Factor that scientist measure during experiment
Factor changes depending on the independent variable
Y axis
Controlled variable
Factors that could affect the experiment but are kept constant throughout the experiment
Ex: environment
Experimental group
Receives experimental treatment
Control group
Baseline that receives NO experimental treatment
Scientific method steps
Observation Question Hypothesis Prediction Experiment Analysis Hypothesis supported or Not Report results
What are characteristics of all living things ?
Organized Reproduce Grow and develop Sense and respond to environment Require and process energy set of biological molecules cells maintain homeostasis evolve Require liquid water
What is a virus? Are they alive ?
Characteristics for yes?
Gray zone between life and non life Have: Organized Reproduce Evolve Have genes of nuclei acids
Viruses
Characteristics they lack
No cells
Do not have structures for energy collection
No homeostasis
What is the scientific method?
A process for solving problems and answering questions
Using a hypothesis and seductive reasoning
Falsifiable hypotheses
Be able to be disproven by experimental results
Scientific theory
A powerful, broad explanation of a large set of observations
- based on many hypotheses
- well supported by evidence
