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 […]

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 […]

You are given an isolated muscle with its motor nerve intact. This preparation is arranged so that you can make electrophysiological measurements from the nerve and the muscle as well as mechanical measurements of the muscle contraction. You observe that if caffeine is added to the fluid bathing the preparation, […]