BIOLOGY DUAL ENROLLMENT VERSION
12th Edition
ISBN: 9780136681311
Author: Urry
Publisher: PEARSON
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Question
Chapter 5.4, Problem 3CC
Summary Introduction
To analyse: If carboxyl and amino groups of an amino acid are present in a polypeptide or not.
Introduction:
Amino acids are organic compounds containing an amino group and an acidic group as substituents on the same carbon which is the a-carbon. Hence, they are known as a-amino acids. The carbon also bears a hydrogen atom and a variable group designated as the R group. The amino acids are amphoteric (can act as both an acid or base) in nature.
Polypeptides are long chain-like structures composed of repetitive units of amino acids arranged linearly that are linked by peptide bonds. Peptides are small chains of amino acids and proteins are long chains that are composed of many polypeptide subunits.
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Chapter 5 Solutions
BIOLOGY DUAL ENROLLMENT VERSION
Ch. 5.1 - What are the four main classes of large biological...Ch. 5.1 - How many molecules of water are needed to...Ch. 5.1 - WHAT IF? If you eat a piece of fish, what...Ch. 5.2 - Write the formula for a monosaccharide that has...Ch. 5.2 - Prob. 2CCCh. 5.2 - WHAT IF? After a cow is given antibiotics to...Ch. 5.3 - Compare the structure of a fat (triglyceride) with...Ch. 5.3 - Why are human sex hormones considered lipids?Ch. 5.3 - Prob. 3CCCh. 5.4 - What parts of a polypeptide participate in the...
Ch. 5.4 - Prob. 2CCCh. 5.4 - Prob. 3CCCh. 5.4 - WHAT IF? Where would you expect a polypeptide...Ch. 5.5 - Prob. 1CCCh. 5.5 - Prob. 2CCCh. 5.6 - How would sequencing the entire genome of an...Ch. 5.6 - Given the function of DNA, why would you expect...Ch. 5 - What is the fundamental basis for the differences...Ch. 5 - Compare the composition, structure, and function...Ch. 5 - Why are lipids not considered to be polymers or...Ch. 5 - Explain the basis for the great diversity of...Ch. 5 - What role does complementary base pairing play in...Ch. 5 - Prob. 5.6CRCh. 5 - Which of the following categories includes all...Ch. 5 - The enzyme amylase can break glycosidic linkages...Ch. 5 - Prob. 3TYUCh. 5 - The structural level of a protein least affected...Ch. 5 - Enzymes that break down DNA catalyze the...Ch. 5 - The molecular formula for glucose is C6H12O6. What...Ch. 5 - Which of the following pairs of base sequences...Ch. 5 - Construct a table that organizes the following...Ch. 5 - Prob. 9TYUCh. 5 - EVOLUTION CONNECTION Comparisons of amino acid...Ch. 5 - SCIENTIFIC INQUIRY Suppose you are a research...Ch. 5 - WRITE ABOUT A THEME: ORGANIZATION Proteins, which...Ch. 5 - SYNTHESIZE YOUR KNOWLEDGE Given that the function...
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- How many chiral carbons are present in this amino acid (aqueous form)? (Identify the following amino acid (at pH = 7.0): (COO-)–CH(NH3+)–CH2–CH2–CH2–CH2–(NH3+)) zero chiral carbons one chiral carbon two chiral carbons three chiral carbons four chiral carbonsarrow_forwardHow many different tripeptides can be formed from three different amino acids, glutamine, histidine, and lysine? Draw the possible structures. Using three-letter abbreviations, give the names for all of the possible tripeptides.arrow_forwardWhich among the 20 standard amino acids has more than one chiral carbon? Draw its structure and indicate with asterisk the second chiral carbon. Is it polar or non-polar? Is it essential or non-essential?arrow_forward
- if glutamic acid were replaced by proline in a protein, how would the tertiary structure be affected?arrow_forwardIdentify the following statements as descriptive of the secondary, tertiary, or quaternary structure of a protein. What types of interactions stabilize each type of structure?(a) The polypeptide chain has a number of bends and twists, resulting in a compact structure.(b) The polypeptide backbone forms a right-handed coil.(c) The four polypeptide chains are arranged in a spherical shape.arrow_forwardWhat is the predominant form of each of the following amino acids at pH = 11? What is the overall charge on the amino acid? (a) valine; (b) proline; (c) glutamic acid; (d) lysinearrow_forward
- Glycine provides structural flexibility in proteins. What is the consequence of this on protein structure?arrow_forwardWhich of the following amino acids is most likely to be found on the outside of a soluble protein, and which of them is more likely to be found on the inside? Explain each answer. (Hint: Consider the effect of the amino acidside chain in each case and that the protein is folded up into its globular form.)(a) Valine (b) Aspartate(c) Histidine (d) Alaninearrow_forwardTwo of the 20 common amino acids have two chiral carbon atoms in their structures. Identify these amino acids and their chiral carbon atoms.arrow_forward
- Give the names of the 20 Common Amino Acids and draw the structure of each.arrow_forwardWhy is a string of bound amino acids called a polypeptide?arrow_forwardWrite the name of the oligopeptide L-E-T-S-P-R-A-Y using their full amino acid names. Draw the structure of olgopeptide L-E-T-S-P-R-A-Y.arrow_forward
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