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Put these steps in a sensible order for planning a fair test of a new energy drink on reaction time.

  • Decide what to blind (participants and the tester measuring reaction time) and how to implement it

  • Run the study and measure reaction time the same way for all participants

  • Choose appropriate controls (placebo drink as negative control)

  • Define the outcome measure (reaction time) and the treatment (energy drink vs placebo)

  • Randomly assign participants to energy drink or placebo groups

Course
Introductory Biology: Cells, Genes, Evolution & Ecology (with Qu
8 units42 lessons
Topics
Biology (General/Introductory)Cell BiologyMolecular BiologyGeneticsEvolutionary BiologyEcology
About this course

This course builds an integrated foundation in biology centered on how cells are structured and function, how genetic information is stored, expressed, and inherited, and how evolution and ecology generate and explain biological diversity. Core topics include basic biochemistry and enzymes, membrane structure and transport, cellular respiration and photosynthesis, cell division (mitosis/meiosis) and sources of variation, DNA replication and mutation, and the central dogma from gene to phenotype. Quantitative reasoning is introduced through Mendelian probability and Hardy–Weinberg/population-genetics calculations, using classic experiments and real-world case applications to connect molecular changes to organismal fitness and population change.