The tetrapeptide Ac-cysteine-alanine-glutamine-argin ine has its N-terminus blocked by acetylation. Its C-terminal pKa is 4.30. Its side chain pKas are 8.3 and 12.5. Use this information to answer questions 14-21. Which of the following is this peptide sequence written in single letter abbreviations? A. Ac-CANR
B. Ac-CAGR
C. Ac-SANR
D. Ac-CANG
E. None of the above

Average annual precipitation and are the two major features that define the biomes on earth.

One function of the immune system is to attack the foreign cells to protect the body. in organ translate , the body recongnizes that the new organ is made of foreign cells. wha kind of medicine would you give a patient to increase the chances of transplate success

What is the importance of having the us forest service, the bureau of land management, the us fish and wildlife service, and the national park service? to manage land resources for conservation and the development of natural resources to manage land resources for conservation and the development of urban areas to preserve historical landmarks and manage the development of urban areas to preserve historical landmarks and manage the development of rural areas