Response to stimuli
Atom, molecule, macromolecule, organelle, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere
Atom, macromolecule, organ, cell, tissue, organism, molecule, ecosystem, biosphere, community, population, organ system
Organism, population, ecosystem, biosphere, atom, molecule, macromolecule, cell, organelle, tissue, organ, organ system
None of the above
Run the controlled experiment
Reading the textbook before class will have a positive effect on my grade.
Reading the textbook before class will have a negative effect on my grade.
Reading the textbook before class will not have an effect on my grade at all.
None of the above
Sexual development in frogs
Amount of herbicide, atrazine
Type of herbicide
Reexamine the experiment for uncontrolled variables
Ask new questions
Use statistical tests to evaluate the significance of the results
Form a hypothesis
The is no variable factor
There is no control
There is no repetition
Measurable results cannot be expected
It takes the pillbugs several minutes to explore their surroundings and select a preferred habitat.
Pillbugs prefer a moist environment
Pillbugs prefer a dark environment
Pillbugs may find chemicals in dry filter paper irritating.
Pillbugs demonstrate no significant habitat preference
Total the number of pillbugs on the dry side throughout the experiment and compare this with the number on the wet side throughout the experiment
After waiting 5 minutes for the pillbugs to acclimate, count the number of pillbugs on the dry side every 30 seconds for 5 minutes. Total and average the results, and compare this with the number of pillbugs on the wet side during this same time interval
Compare the number of pillbugs on the dry side at the end of 10 minutes with the number of pillbugs on the wet side at the end of 10 minutes
Divide the number of pillbugs on the dry side throughout the experiment by the number on the wet side throughout the experiment.
If pillbugs are allowed free movement, then more will be found in a moist environment than in a dry environment
If pillbugs like a moist environment, then they will move to the wet side of a choice chamber.
If an experiment with pillbugs is run for 10 minutes, then more pillbugs will be found in the most favorable environment
Pillbugs are found in moist habitats, so I predict that more will be found where it is wet.
Group A only
Group B only
Group A and B
Neither group A or B
Nothing, because this inference is a valid scientific fact
Repeat this experiment several times and obtain similar results
Repeat this experiment several times and obtain different variables
Develop a new hypothesis and test it
It changes as the independent variable changes
It changes as the responding variable changes
It does not change
It is supported or disproved