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1. Observe the chamelion/insect interaction in the image found: Identify two evolved traits that provide survival benefits to either the chamelion, the insect, or both. For one of the traits, speculate about the trait’s history in the species. What was the creature like before the trait appeared? Genetic changes don’t […]

Q1. Use of synthetic fertilizers often leads to the contamination of groundwater with nitrates. Nitrate pollution is also the suspected cause of anoxic “dead zones” in the ocean. Which might help reduce nitrate pollution? Q2. A cell whose cytoplasm has a concentration of 0.02 molar glucose is placed in a […]

1. What are biofilms, how do they form, and how can biofilms complicate treatment of infectious diseases? 2. Why are septic tanks and oxidation ponds not feasible for large municipalities? 3. What is the purpose of a coliform count on water? 4. Bioremediation refers to the use of the living […]

Questions 1-8: Answer the following essay questions in a short paragraph. Each question is worth four points. 1. Compare and contrast directional selection and disruptive selection, and provide an example of each. 2. Many pathogenic bacteria species are becoming resistant to antibiotics. Explain how such adaptations can develop through the […]