I need these questions answered bio 103

1.     A population of grasshoppers in the Kansas prairie has two color phenotypes, green and brown. Typically, the prairie receives adequate water to maintain healthy, green grass. Assume a bird that eats grasshoppers moves into the prairie. How will this affect natural selection of the grasshoppers? How might this change in a drought year?

 2.     You are a writer for “Consumer Reports” magazine and you are asked to design an experiment to evaluate the effectiveness of three brands of whitening strips for teeth. Describe how you would do this using the Scientific Method. Include all of the steps, controls and variables.

 3.     Viruses are not considered to be living organisms.  Name 4 characteristics you could identify to distinguish living organisms from viruses.

 4.     Explain the process of cell division in animals. Include a description of

interphase, mitosis and cytokinesis.

5.     Suppose someone presented data from their research that showed the DNA of a newly discovered species was composed of: 30% adenine, 30% guanine, 20% thymine, 20% cytosine. Based on what you know about DNA structure, explain why these data do not make sense.

6.     What are the differences between a covalent bond and an ionic bond?

7.     Water is crucial for life as we know it. One of the most important characteristics of water is its ability to act as a solvent. Explain why water is such a good solvent for polar and charged molecules.