Dis4_Buffers+and+Proteins+Worksheet_Solutions

Dis4_Buffers+and+Proteins+Worksheet_Solutions - - Draw and...

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H H H H H H H H H H H Peptide bond Protein Backbone Amino Acids - + Hydrophobic Ionic Hydrophobic Covalent (disulfide) Ionic Buffers and Proteins Worksheet Buffers The carbonic acid-bicarbonate buffer system is important for maintaining biological pH. To represent pH 7.4, let’s say there are 4 carbonic acid and 4 bicarbonate atoms in our solution. Draw a picture below to represent this: 3 molecules of strong acid HCl are added to this solution. Draw a picture representing how the buffer system would react: Red H came from the 3 HCl Is this solution pH 7.4, higher than 7.4, or lower than 7.4? 7.4 What if 5 molecules of NaOH, a strong base, were added to the original solution? Draw a picture to represent what the solution would look like: OH- 4 NaOH neutralized by buffer, 1 hydroxide in solution Is this solution pH 7.4, higher than 7.4, or lower than 7.4? Higher than 7.4 Bio93 Discussion Week 4 10/18/10
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Proteins Proteins have many functions. What are some roles or processes that proteins are involved in? Primary structure
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Unformatted text preview: - Draw and label your model below: What is the name of the bond between amino acid subunits? Peptide bond Secondary structure- Draw and label your model below: Alpha helix Beta-pleated sheet What are the names of the two types of secondary structure? Alpha-helix, beta-pleated sheet What type of bonds stabilizes secondary structure? Hydrogen bonds between protein backbone atoms Tertiary structure- Draw and label your model below: Example shown is ionic What types of interactions stabilize tertiary structure? Hydrophobic, covalent (disulfide), H-bond, van der Waals between amino acid R groups Circle the R groups of the amino acids below: Bio93 Discussion Week 4 10/18/10 Which of the amino acids above would be expected to form each type of interaction (covalent, ionic, hydrogen, hydrophobic/van der Waals)? See boxed labels above. Quaternary structure Interactions between 2 or more polypeptides Bio93 Discussion Week 4 10/18/10...
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Dis4_Buffers+and+Proteins+Worksheet_Solutions - - Draw and...

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