Themes of Biology
The study of life.
Biology
A possible explanation to a question or problem that has not yet been tested.
hypothesis
Two ways that data may be organized and presented.
Data tables
Graphs
The idea that life can arise from non-living matter.
Spontaneous generation (abiogenesis)
Organisms that use an energy source to produce their own food.
Autotrophs
An organism composed of many cells and the cells work together to perform tasks.
Multicellular organism
independent variable
The type of data that are numbers and are obtained by counting or measuring.
Quantitative data
Plants make their own food through this process.
Photosynthesis
The study of the interaction of living organisms with one another and with their environment.
Ecology
Type of reproduction in which offspring are produced by two parents.
Sexual reproduction
This can be formed after many hypotheses have been supported; explains the "why" something happens.
Theory
This type of data presentation is used to visually show changes of one variable against changes of a different variable when the previous data points are connected to each other.
Line graph
The stable internal environment that a cell maintains in respect to its external environment.
Homeostasis
A group of cells that work together to perform a similar function.
Tissue
Some organisms are more “fit” for their environment than others. Those organisms with favorable characteristics making them well suited for their environment are more likely to survive, reproduce, and pass these traits to their offspring.
Natural Selection
This group serves as a baseline to be compared against.
Control group
The variable that is being measured by the researcher; is always found on the Y axis.
Dependent variable
An organism that can NOT make its own food.
heterotroph
This scientist was the "final nail" in spontaneous generation.
Pasteur
Cells of all living organisms are alike in what two ways.
1) Contain genetic information (DNA or RNA) and
2) Enclosed in a membrane.
What are the 5 parts of the scientific method?
-Observation
-Hypothesis
-Experiment (controlled)
-Analysis
-Conclusion
A scientist is studying the how different nutrient levels effect the color of tomato plants' leaves. What type of data is the dependent variable?
Qualitative
List 5 of the 8 characteristics of life?
1.Living things are made up of units called cells.
2.Living things reproduce.
3.Living things are based on a universal genetic code called DNA.
4.Living things grow and develop.
5.Living things obtain and use materials and energy.
6.Living things respond to their environment.
7.Living things maintain a stable internal environment in a process called homeostasis.
8.Living things evolve, or change, over time.
Identify the dependent and independent variables in Spallanzani's experiment.
Independent: Stopper vs no stopper
Dependent variable: Growth of microorganisms