I have worked through some of these and but dont feel like I understand them enough.. I need better step by step explanation on how to do these.Document Preview:Instructions: Work out the answers to the following problems. Show all your work. Work must be legible but can be hand written. Please type all final answers and turn that in as a separate document. Turn in both work and answer sheet to the assignment folder. Small mistakes will cost you small points (EG. correctly set up problems that are calculated incorrect would lose 1 point other errors will lose more points.)Since this is take home exam you can use written sources and the internet; however copying from any source verbatim is still plagiarism. Therefore should you find the solution to any of these problems and copy it I will treat that as plagiarism. Please do not share your final solutions. The first six (1-6) questions will be graded out of 10 points and the last two (7 and 8) will be graded out of 20 points.Assume you are observing an aquarium of fish. There are ten different fish in the aquarium. How many different arrangements of fish are there? What if 3 of the fish are indistinguishable (the same species) then how many different arrangements are there? What if two of the fish are always together then how many arrangements are there? Now assume there are two equal places the fish can be: part A and part B. The fish can swim between the two parts freely. Assume all the fish are different. What is the most probable arrangement of the fish? Protein folding has been linked to many disease states and is therefore an important area of biochemical research. Many proteins can fold into their native configuration in vitro. Thus, the necessary information to achieve this folded structure is contained in the sequence alone. One protein that has been studied is the human chorionic gonadotropin ??? subunit (see 1 for more information). This peptide is synthesized as a 146 amino acid chain but the C-terminal end is removed to leave a 111 amino acid final peptide (2). Within these 111 amino acids there are 12 cys that form 6 disulfide bonds (2). The Attachments: exam1sec1-1.doc