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:
Identify the hypothesis: Mice fed higher levels of protein grow more than mice fed lower levels of protein.
Identify the independent variable: The protein supplement.
Identify the dependent variable: The average mass gained.
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.
Identify the control group in this experiment: Mice fed low protein diet.
Identify the experimental group(s): The mice fed the protein supplement.
What conclusions might be drawn from this data? The lower protein diet caused greater average mass gain. Therefor the hypothesis was incorrect.
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.
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:
Complete each of the following: