The protein molecules in many foods provide the amino acids required for cells to produce new proteins. To determine whether a sample contains protein, Biuret solution is used. Biuret solution contains copper ions. In the absence of proteins, it is blue in color. However, when proteins are present, the chemical state of the copper ion causes them to form a chemical complex with the pep tide bonds between amino acids, changing the color of the solution. In the presence of short peptides, the solution will turn pink, and in the presence of long polypeptides, the solution will turn violet.
Record your hypothesis about what will happen when Biuret solution is mixed with the solutions from test tubes 1, 2, 3, and 4 here. Be sure to use scientific reasoning to support your hypothesis..
Answers: 3
Biology, 22.06.2019 00:40
World class speed skaters can skate a 3,000-m course in about 4 minutes. what is their average speed for this course. a. 12.5m/s b. 1.33m/s c. 13.3m/s d. 1.25m/s
Answers: 3
Biology, 22.06.2019 06:30
Human genes only differ by less than percent. a. 1 b. 6 c. 11 d. 16
Answers: 3
Biology, 22.06.2019 09:00
This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.
Answers: 1
The protein molecules in many foods provide the amino acids required for cells to produce new protei...
Physics, 15.11.2019 16:31
History, 15.11.2019 16:31
History, 15.11.2019 16:31
Mathematics, 15.11.2019 16:31
Mathematics, 15.11.2019 16:31
Mathematics, 15.11.2019 16:31
Biology, 15.11.2019 16:31
Social Studies, 15.11.2019 16:31
History, 15.11.2019 16:31
Business, 15.11.2019 16:31
English, 15.11.2019 16:31
English, 15.11.2019 16:31
Computers and Technology, 15.11.2019 16:31
Social Studies, 15.11.2019 16:31