Chemistry In Context
9th Edition
ISBN: 9781259638145
Author: Fahlman, Bradley D., Purvis-roberts, Kathleen, Kirk, John S., Bentley, Anne K., Daubenmire, Patrick L., ELLIS, Jamie P., Mury, Michael T., American Chemical Society
Publisher: Mcgraw-hill Education,
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Question
Chapter 12, Problem 19Q
Interpretation Introduction
Interpretation:
Two examples of amino acids with side chains that are considered as acidic has to be given and the characteristics that makes them acidic has to be explained.
Concept Introduction:
Amino acids are the molecules containing an
Carbon, hydrogen, oxygen and nitrogen are the key elements in amino acid.
Polar amino acids have a side chain that can be acidic or basic groups and is hydrophilic. They are able to make hydrogen bonding with water.
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Examine the structure of the following amino acid and answer the questions below:
Name the amino acid.
Does it exhibit optical activity? Why?
Describe the acid-base properties of amino acids.
What is zwitterion?
Describe the basic structure of an amino acid. How are amino acids linked together to form proteins?
Question 6: The structural diagram of one of the twenty amino acids is given below. Look at
and answer the next two questions.
H
>--<
N-C-C
H
H
O-H
6a. Which chemical groups are present in this amino acid? Name them.
H
6b. Is this amino acid hydrophobic, hydrophilic, or amphipathic? How do you know?
Explain. Use the terms electronegativity and polar in your answer. (You might want to
Chapter 12 Solutions
Chemistry In Context
Ch. 12.1 - Skill Building Finding Equilibrium Glucose and...Ch. 12.1 - Prob. 12.3YTCh. 12.1 - Prob. 12.4YTCh. 12.2 - Prob. 12.5YTCh. 12.2 - Prob. 12.6YTCh. 12.2 - A practicing scientist must Judge a potential...Ch. 12.3 - Prob. 12.8YTCh. 12.3 - Skill Building Checking on Carbon a. Examine the...Ch. 12.3 - Prob. 12.10YTCh. 12.3 - Prob. 12.11YT
Ch. 12.3 - Prob. 12.12YTCh. 12.4 - Prob. 12.13YTCh. 12.4 - Skill Building Functional Groups in Dopamine Draw...Ch. 12.4 - Prob. 12.15YTCh. 12.5 - Prob. 12.16YTCh. 12.5 - Prob. 12.17YTCh. 12.6 - Prob. 12.18YTCh. 12.6 - Prob. 12.19YTCh. 12.6 - The structures of proteins, such as the ones shown...Ch. 12.7 - Reconsider your work in past chapters. List three...Ch. 12.7 - Prob. 12.22YTCh. 12.7 - Prob. 12.23YTCh. 12.8 - Prob. 12.24YTCh. 12.8 - Prob. 12.25YTCh. 12.9 - Skill Building Ester Formation Draw structural...Ch. 12.9 - Prob. 12.27YTCh. 12.9 - You Decide Supersize My Aspirin A friend who...Ch. 12.9 - Modern methods of drug discovery involve...Ch. 12.10 - Make two lists of drugs for each of the two...Ch. 12.10 - See for yourself the shapes of drug molecules by...Ch. 12.10 - Prob. 12.33YTCh. 12.10 - Prob. 12.34YTCh. 12 - Scientific Practices Follow the Hormone Using the...Ch. 12 - The field of chemistry has many sub-disciplines....Ch. 12 - Prob. 2QCh. 12 - Prob. 4QCh. 12 - Nitrous acid (HNO2) has a Ka value of 4.0 10 4,...Ch. 12 - Use the Henderson-Hasselbalch equation and Table...Ch. 12 - Write the structural formula and line-angle...Ch. 12 - Prob. 8QCh. 12 - Prob. 9QCh. 12 - Prob. 10QCh. 12 - Prob. 11QCh. 12 - Prob. 12QCh. 12 - Estradiol is relatively insoluble in water but...Ch. 12 - Prob. 14QCh. 12 - Prob. 15QCh. 12 - Prob. 16QCh. 12 - Define and relate the two terms: hormone and...Ch. 12 - Refer to Figure 11.17. Select two examples of...Ch. 12 - Prob. 19QCh. 12 - Molecules as diverse as cholesterol, sex hormones,...Ch. 12 - Prob. 21QCh. 12 - Prob. 22QCh. 12 - Prob. 23QCh. 12 - Sulfanilamide is the simplest sulfa drug, a type...Ch. 12 - Explain why an equilibrium constant cannot tell...Ch. 12 - Use the information in Table 12.1 to redraw Figure...Ch. 12 - Draw structural formulas for each of these...Ch. 12 - In Your Turn 12.12, you were asked to draw...Ch. 12 - Prob. 29QCh. 12 - Prob. 30QCh. 12 - Prob. 31QCh. 12 - Prob. 32QCh. 12 - Prob. 34QCh. 12 - Prob. 35QCh. 12 - Prob. 36QCh. 12 - Prob. 37QCh. 12 - Prob. 38QCh. 12 - The text states that some racemic mixtures contain...Ch. 12 - Prob. 40QCh. 12 - Prob. 41QCh. 12 - Prob. 44QCh. 12 - Prob. 47QCh. 12 - Prob. 49QCh. 12 - Dorothy Crowfoot Hodgkin first determined the...Ch. 12 - Prob. 52Q
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- To which family of mirror-image isomers do nearly all naturally occurring amino acids belong?arrow_forwardWhat is a free amino group? Draw the structure of the free amino grouparrow_forward**Use the image provided** The word “isosteric” means having the same general three-dimensional shape.a. Look up amino acid structures. Find an amino acid side chain that is isosteric with a valine side chain. (Hint: hydrogen atoms are small, so while they of course affect molecular geometry, what matters more is the molecular geometry of non-hydrogen atoms connected to other non-hydrogen atoms.) Draw both side chains and label the molecular geometry around each non-hydrogen atom.arrow_forward
- Which is true regarding amino acids? This describes a specific molecule with both amine and carboxylic acid functional groups This describes a specific molecule with amine or carboxylic acid functional groups This describes a category of molecules with both amine and carboxylic acid functional groups This describes a category of molecules with amine or carboxylic acid functional groupsarrow_forwardWhat part of an amino acid determines its overall chemical properties? Question 6 options: The side group The amine group The adapter group The carboxyl grouparrow_forwardThis question has part a, part b, part c, and part d. It gives information about Appendix G for the amino acid serine.arrow_forward
- ______ amino acids are considered essential.a. 5b. 10c. 15d. 20arrow_forwardat a pH value of 2, the amino and carboxyl groups in an amino acid will exist asarrow_forwardAlmost all proteins are composed from a set of about _____ amino acids.a. 4b. 10c. 20d. 50 ______ amino acids are considered essential.a. 5b. 10c. 15d. 20 An amino acid that has an indole group side chain.a. Trpb. Phec. Tyrd. ProWhich of the following is the simplest amino acid?a. Alab. Glyc. Vald. ProWhich of these will not give a blue solution with Ninhydrin testa. Prob. Phec. Alad. CysA neutral molecule with a positive and negative electrical charge.a. Isoelectric pointb. Zwitterionsc. Bufferd. Amphoteric3 amino acids joined together by two peptide bonds.a. Dipeptideb. Tripeptidec. Tetrapeptided. PolypeptideAn amino acid that can form disulfide bondsa. Cysteineb. Methioninec. Cystined. SerineWhich of the following is not a property of amino acidsa. Bufferb. Isoelectric pointc. Zwitterionsd. Insoluble in waterThe protein primary structure is held together bya. Hydrogen bondsb. Disulfide bondsc. Peptide bondsd. Protein bondsarrow_forward
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