You encounter a protein in your research with a molecular weight of 75,000 MW. There are two contaminating proteins with a MW of 70,000 and 9,000. Explain how you could use dialysis tubing to get rid of your "contaminating proteins".

Which codon is the code for the amino acid histidine (his)?

What is point source pollution of an aquatic ecosystem? a) pollution of freshwater sources b) pollution from many sources that combine into one c) pollution that occurs over a wide area; water that runs off from fields, parking lots, and other land surfaces d) pollution that can easily be identified with a single discharge source, such as an open pipe which drains into a body of water

Under which of the following circumstances would natural selection not operate on an organism