IndietroGeneral Biology: Lab Safety and Scientific Method
Termini in questo insieme (20)
Observation: An initial observation is made about a phenomenon in the natural world.
Ask the instructor before proceeding to ensure safety and accuracy.
So it can be tested and potentially disproven, allowing scientific investigation.
The independent variable is changed by the investigator to test its effect on the dependent variable.
The dependent variable is the factor measured or observed that changes in response to the independent variable.
Variables kept constant across all treatments to ensure changes in the dependent variable are due to the independent variable.
Replication increases confidence that results are due to the independent variable and accounts for natural variability.
Flush the area immediately with water for several minutes and notify the instructor.
Use mechanical pipettors or rubber bulbs; never pipette by mouth.
To provide a baseline by eliminating or standardizing the independent variable for comparison.
Qualitative data (e.g., color, smell) and quantitative data (e.g., weight, volume).
Inform the instructor, then collect broken glass with a dustpan and brush and dispose in the sharps container.
To protect eyes from chemical splashes, heat, or glass impact risks.
Stop, Drop, and Roll; smother flames with a fire blanket.
It forms a specific prediction based on the general hypothesis that can be tested.
Dispose of chemical waste properly according to instructions; do not pour down the sink unless permitted.
Draw conclusions to accept or reject the hypothesis and communicate findings through publications or presentations.
To prevent contamination and ensure safety from chemical exposure.
Wash your hands and clean all work surfaces and equipment.
Grasp the plug, not the cord, and ensure hands are dry before touching electrical equipment.