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Variables Formative Assessment

Last updated about 5 years ago
9 questions
1

Based on the graph below, what were the independent and dependent variables in this experiment?

1

Identify at least three control variables that would be needed in the experiment from question 1

1

Most scientific papers begin with an abstract: a summary of the research and the results. Below is an example of an abstract. What were the independent and dependent variables in this experiment?

To feed on materials that are healthy for them, flies (order Diptera) use taste receptors on their tarsi to find sugars to ingest. We examined the ability of blowflies to taste monosaccharide and disaccharide sugars as well as saccharin. To do this, we attached flies to the ends of sticks and lowered their feet into solutions with different concentrations of these sugars. We counted a positive response when they lowered their proboscis to feed. The flies responded to sucrose at a lower concentration than they did of glucose, and they didn’t respond to saccharin at all. Our results show that they taste larger sugar molecules more readily than they do smaller ones. They didn’t feed on saccharin because the saccharin we use is actually the sodium salt of saccharin, and they reject salt solutions. Overall, our results show that flies are able to taste and choose foods that are good for them.

1

Based on the graph below, what were the independent and dependent variables in this experiment?

1

Researchers are testing a new diabetes medication on diabetic mice. They will inject mice with the medication and then measure the blood sugar of the mice an hour after injection. What is the dependent variable in this investigation?

1

Researchers are testing a new diabetes medication on diabetic mice. They will inject mice with the medication and then measure the blood sugar of the mice an hour after injection. What is the independent variable in this investigation?

1

Describe a suitable control group for the mice experiment

1

Identify at least three controls (control variables) that should be included in the experiment

1

Draw a picture of a mouse (to practice the handwriting/drawing option)