Hey, i understand that i am only suppose to upload one question at a time but i

Question

Hey, i understand that i am only suppose to upload one question at a time but i really need your guys help. I did horrible on my BIO-2 test and I need to know what i did wrong becuase this material is going to be on the final test so I need to know what i did wrong. Please help me with these multiple choice questions. Please answer all of them i would really appreciate it! Thank you so much for your time and help!

buried deeply in a protein away fs in a protein are likely to be tertiary conformation A. Serine, threonine, glutamine B. Lysine, arginine, histidine C. Valine, leucine, isoleucine D. All of the above E. None of the above o acids i 6. Which of the following amino a y from water when folded into their 7. what LEVEL OF structural organization of proteins does "X” represent? A. the alpha-helix in the primary structure of a polypeptide B. the beta-sheet in the primary structure of a polypeptide C. the alpha-helix in the secondary structure of a polypeptide D. the beta-sheet in the secondary structure of a polypeptide 8. Name the bond created by the reaction shown below between two cysteine residues in a protein:

Explanation / Answer

Answer for question number 6 : The correct answer is C (Valine, Leucine and Isoleucine)

Explanation : These amino acids are hydrophobic in nature and tend to stay away from aqueous environment and cluster together within proteins, stabilizing protein structure by means of hydrophobic interactions.

Answer for question number 7 : The correct option is C (The alpha helix in the secondary structure of protein.

Explanation : In an alpha-helix, the protein chain is coiled like a loosely-coiled spring. The polypeptide backbone is coiled up like a very tight clockwise screw thread or the cord of a telephone.Weak bonds which stabilize the helix of protein are hydrogen bonds

Structural features of alpha helix :

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