Students have been using a cell-free system that used room-temperature stable protein of interest. To stop the reaction, they use heat to the proteins to high temp then add negatively charged detergents. This allows the students to separate the enzymes, the protein targets, and their fragments on an electrophoresis gel. What happens to enzymes and other proteins when they are heated up and soaked in detergent? How would the larger enzymes separate from the protein fragments on gel? How would a protein that is cut look before and after the experiment? Describe the mechanism for gel electrophoresis.

What makes the results of a scientific experiment accurate? a) having multiple trials b) lacking any supporting data c) working in a lab d) using a hypothesis that is always true

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.

What organ is the first to receive nutrients that have been absorbed from the digestive tract?