Campbell Essential Biology (7th Edition)
7th Edition
ISBN: 9780134765037
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Chapter 3, Problem 19PS
Imagine that you have produced several versions of lactase, each of which differs from normal lactase by a single amino acid. How could you determine which versions alter the protein’s shape?
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Chapter 3 Solutions
Campbell Essential Biology (7th Edition)
Ch. 3 - One isomer of methamphetamine is the addictive...Ch. 3 - Monomers are joined together to form larger...Ch. 3 - Polymers are broken down into monomers through the...Ch. 3 - Prob. 4SQCh. 3 - When two molecules of glucose (C6H12O6) are joined...Ch. 3 - One molecule of dietary fat is made by joining...Ch. 3 - Prob. 7SQCh. 3 - Prob. 8SQCh. 3 - Prob. 9SQCh. 3 - Most proteins can easily dissolve in water. Where...
Ch. 3 - Prob. 11SQCh. 3 - A glucose molecule is to _____ as a nucleotide is...Ch. 3 - Name three similarities between DNA and RNA. Name...Ch. 3 - Prob. 14SQCh. 3 - For each statement, identify which major theme is...Ch. 3 - For each statement, identify which major theme is...Ch. 3 - Prob. 17IMTCh. 3 - Scientists at the U.S. Food and Drug...Ch. 3 - Imagine that you have produced several versions of...Ch. 3 - Prob. 20PSCh. 3 - Prob. 21BSCh. 3 - Heart disease is the leading cause of death among...Ch. 3 - Each year, industrial chemists develop and test...
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- Explain the difference between essential and nonessential amino acids. How many of each are there? Identify and describe two essential and two nonessential amino acids. What does the term "conditionally essential" mean? Give an example.arrow_forwardWhy is lactose a reducing sugar while sucrose is a non-reducing sugar? Explain clearly. Please support the answer with an illustration.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_forward
- Now assume that the protein you are making is one that is not destined to be secreted into the extracellular space, but instead is meant to function within the cytoplasm. How will the synthesis of these types of protein be different? Why?arrow_forwardWhen an inappropriate amino acid is substituted in place of another, as occurs in certain genetic disorders, the resulting protein is either poorly functional or non-functional. Since proteins contain hundreds if not thousands of amino acids, why should the change of a single amino acid be so critical?arrow_forwardIn sickle cell anemia, an inherited form of anemia in which the hemoglobin distorts the red blood cell to a characteristic sickle shape, the 6th residue of the β chain, a Glu residue, is replaced with a Val residue. This mutation substitutes the ____ Glu with a ____ Val.arrow_forward
- How many different molecules composed of (a) two, (b) three, and (c) four amino acids, linked together by peptide bonds, can be made from the set of 20 naturally occurring amino acids?arrow_forwardGiven this short polypeptide: Met-Ala-Gly-Ser A) Which is the amino terminal amino acid? B) How many amino acids are in this polypeptide? C) How many peptide bonds are in this polypeptide? D) Which amino acid has the smallest side chain? E) Which amino acid contains sulfur?arrow_forwardWhy is a string of bound amino acids called a polypeptide?arrow_forward
- imagine that you are running a sample on a TLC plate that is comprised of aspartate and isoleucine. Which amino acid will travel the farthest up the TLC plate? Why?arrow_forwardIn the figures are the titration curves of two amino acids. Consider the first titration.arrow_forwardConsidering the chemical characteristics of the amino acids valine and glutamic acid (see Figure 5.14), propose a possible explanation for the dramatic effect on protein function that occurs when valine is substituted for glutamic acid.arrow_forward
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