Biology Scientific Method Final Practice

Phases of Discovery: place the four phases of the scientific method in order

1.) Hypothesis 2.) Experiment 3.) Analysis 4.) Report

Scientific method, actions in each phase: match the action to the appropriate phase of the scientific method

1.) Hypothesis: formulate a hypothesis and create a strategy 2.) experiment: Carry out the strategy, collect measurements 3.) analysis: draw graphs, evaluate the hypothesis 4.) report: document results

Two types is variables: when utilizing the scientific method, there are two types of variables. They are

Dependent and independent

Identify independent variables: Imagine that you wish to compare the two different diets that will be fed to tadpoles raised in a lab. One diet is meat-based fish food, and the other is traditional diet of boiled lettuce.You want to see if the meat-based diet will be associated with an increase in the average weight of the tadpoles. In your experiment you keep all other factors such as tadpole density per pan, temperature, pH, and the amount of food the same. The only difference between your control and experimental groups is the type of food the tadpoles receive. What is the independent variable for the tadpole diet experiment?

Diet

Reliable Conclusions: in order to come to reliable conclusions about pilling preferences, you needed to use the

Scientific Method

Prep for scientific experiment: before you begin a scientific experiment, you should (select all that apply) State a hypothesis, report on the issue, decide on a strategy, record the data

State a hypothesis, report on the issue, decide on a strategy

Distinguish between experimental and control group: If you wanted to test whether or not a particular pain reliever was effective in the general population you would need to design an experiment with an experimental group and a control group. What should be the only difference between these two groups

Treatment. The experimental group should get the pain reliever and the control group should get a placebo.

Formulate a hypothesis with given info: Some students consume large amounts of coffee and so called energy drinks to help them stay alert when studying. He knows that many who engage in this practice seem to do poorly on exams. I suppose you want to investigate the relationship between caffeine consumption and exam performance. Which of the following statements would be an appropriate hypothesis

Students who consume large amounts of caffeine while studying will have lower exam scores than those who consume less caffeine.

From a hypothesis from given info II: Imagine that you wish to compare the two different diets that will be fed to tadpoles raised in a lab. One diet is meat-based fish food, and the other is traditional diet of boiled lettuce.You want to see if the meat-based diet will be associated with an increase in the average weight of the tadpoles. In your experiment you keep all other factors such as tadpole density per pan, temperature, pH, and the amount of food the same. The only difference between your control and experimental groups is the type of food the tadpoles receive. Which is a good hypothesis for this tadpole experiment?

Tadpoles will be larger if fed a meat based diet