Scenario+3+pd+7

The Mice

A scientist observed that __mice fed seeds__ appeared to __grow more than mice fed leafy green and yellow vegetables__. The scientist wondered if this might be __caused by the higher concentration of protein in the seeds than in the vegetables__. He decided to conduct an experiment to find out. The scientists got __200 mice of the same age, size, and gender__ and __divided them into two groups of 100 mice each__. He weighed each and fed __Group A- a diet low in protein__ and __Group B- the same food except he added a protein supplement__. Both groups __received the same amount of food each day.__ He checked the __mass of each mouse each day and kept accurate records for 14 days__. The results from his experiment are found in the data table below:
 * =  ||= __Group A__ - diet low in protein ||= __Group B__ - diet high in protein ||
 * = Average mass gained ||= __ 12 grams __ ||= __ 8 grams __ ||

Complete each of the following:
 * 1) Identify the hypothesis: Mice fed higher levels of protein grow more than mice fed lower levels of protein.
 * 2) Identify the independent variable: The protein supplement.
 * 3) Identify the dependent variable: The average mass gained.
 * 4) Identify the other variables the scientist needs to consider/control during this experiment: Same brand of vegetables. Same species of mouse. Same sized mice. Same gander. Same size of vegatables. Same color mice. Same prior mouse diet.
 * 5) Identify the control group in this experiment: Mice fed low protein diet.
 * 6) Identify the experimental group(s): The mice fed the protein supplement.
 * 7) What conclusions might be drawn from this data? The lower protein diet caused greater average mass gain. Therefor the hypothesis was incorrect.
 * 8) What recommendations might you suggest for further study or for improvement? I would recommend that they try a medium amount of protein. Also they could lengthen the experiment.