For numbers 4-10, identify the Independent and Dependent Variables for each problem. 4. The impact of a drug on cancer. IV: The DV: 5. Plants grow more when exposed to trap music. IV: DV: 6. Exercise improves health. IV: DV: 7. Does the amount of vitamin A in their diet affect the weight of rats? IV: DV:

The impact of a drug on cancer.

  IV: drug       DV: reduced/increased/neutral cancer growth.

Plants grow more when exposed to trap music.

    IV: trap music       DV: plant growth indicators (height, biomass, etc.)

Exercise improves health.

     IV: Exercise regime       DV: health indicators

Does the amount of vitamin A in their diet affect the weight of rats?

      IV: amount of vitamin A       DV: weight of rats.

Explanation:

First, it is imperative to understand what dependent and independent variables are.

Dependent variables are the main variables researchers set out to determine during the course of an experiment. Their values are dependent on some other variables that are inputted by the researchers.

Independent variables are variables that are directly inputted by researchers. Their values can be manipulated or varied to see the kind of effects they will have on dependent variables.

Hence;

To determine the impact of a drug on cancer, the input/independent variable would be the drug itself while the dependent variable would be the kind of effects they produce on cancer - reduced, increased or, neutral growth.Plants grow more when exposed to trap music: the input/independent variable would be trap music while the dependent variable would be heigh, biomass, or any other indicator of growth in plants.Exercise improves health: the input/independent variable would be exercise regimes while the independent variable would be indicators of health. Does the amount of vitamin A in their diet affect the weight of rats?: the input/independent variable here would be the amount of vitamin A while the dependent variable would the weight of rats.

Molecules called lipids have long hydrocarbon chains that determine the way they act. they can be fats, oils, or hormones, and even exist in our cell membranes 

Synapse nervous system they process and transmit signals. in a neuron