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 test tube of water containing 0.02 molar glucose. Assume that glucose is not actively transported into the cell, which terms describes the tonicity of an external solution relative to the cytoplasm of the cell?