Name Bio 201 Protein Worksheet This worksheet is due by the end of the next clas
ID: 199542 • Letter: N
Question
Name Bio 201 Protein Worksheet This worksheet is due by the end of the next class: You may use your notes, textbook, or other resources excluding a classmate. Please try to do the work on your own. You are always welcome to visit your Instructor for help after you have tried your best 1) Which of the following best describes how carrier proteins move molecules across the 1) membrane? A) selectively bind the molecule to be transported, used ATP to change configuration, and relaease it on the other side B) use an ion gradient to power movement of molecules across a membrane C) selectively bind the molecule to be transported, change configuration, and release it on the other side couple ions or molecules together to drive each other's transport across a membrane 2) Which of the following classes of amino acids is buried within the folded structure of the2 protein in the cytoplasm of a cell? Explain your answer on another piece of paper. A) Basic B) Nonpolar c) Polar D) Acidic 3) You have isolated a protein from your culture of yeast cells, and analyzed its structure. You find that the protein contains several alpha helices, some polar regions, and non-polar regions. Where in the cell is it most likely found? Explain your answer on another piece of paper. A) embedded in a cell membrane B) in the perinuclear space c) associated with a cell membrane D) in the cytoplasm E) in the nucleus 0 Which of the following are involved in forming the tertiary structure of proteins? 4) A) Disulfide bonds B) H bonds C) Hydrophobic interactions D) Ionic bonds E) All of the above 5) For what are mass spectrometers used? Identify the function of a protein Determine the mass/charge ration of a protein A) c) Determine the molecular weight of a protein D) Identify the sequence of amino acids in a protein E) Analyze the level of expression of a proteinExplanation / Answer
1C) carrier protein selectively bind to molecule to be transported, change configuration, and release it to the other side.
2) non-polar
non polar amino acids are not soluble to water, thus they are present inside the folded protein structure.
3A) embeded in plasma membrane.
as proteins which are integral membrane protein has both the polar and non polar regions. They also have transmembrane helix.
4A) disulfide bonds
5 B) determines the mass or volme ratio.
6.
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