Human Biology: Concepts and Current Issues (8th Edition)
8th Edition
ISBN: 9780134042435
Author: Michael D. Johnson
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 9TY
The primary structure of a protein is maintained by________ bonds.
a. hydrophilic
b. hydrophobic
c. hydrogen
d. covalent
e. ionic
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A _____ is an example of protein secondary structure.
Select one:
a.
polypeptide
b.
domain
c.
barrel
The tertiary structure of many proteins reveals that nonpolar portions are primarily on the ________ of the molecule
a. interior
b. exterior
Tertiary structure of protein is maintained by
Select one:
a.
Hydrogen bond
b.
All of these
c.
Di-sulphide bond
d.
Peptide bond
Chapter 2 Solutions
Human Biology: Concepts and Current Issues (8th Edition)
Ch. 2 -
1. Who do you think should be responsible for...Ch. 2 - Prob. 2QCCh. 2 - Describe the electrical charges and relative...Ch. 2 -
2. Explain why two atoms of hydrogen tend to...Ch. 2 -
3. Explain why polar and charged molecules tend...Ch. 2 - How is a covalent bond different from an ionic...Ch. 2 - Compare and contrast potential energy and kinetic...Ch. 2 - Distinguish between saturated and unsaturated...Ch. 2 - Describe the process known as dehydration...Ch. 2 - Explain why proteins come in an almost unlimited...
Ch. 2 -
9. Discuss the importance of enzymes in living...Ch. 2 -
10. Describe the role of ATP in energy transfer...Ch. 2 - If a molecule of starch is repeatedly hydrolyzed,...Ch. 2 - Which of these molecules would be described as...Ch. 2 -
3. _______bonds form between the oxygen and...Ch. 2 - 13C and 14C are ______ of carbon. a. isotopes b....Ch. 2 - Which of the following substances has the lowest...Ch. 2 - When sugar is dissolved in water, sugar is the...Ch. 2 - A monosaccharide is to a polysaccharide as an...Ch. 2 -
8. Which of these bonds is the easiest to...Ch. 2 -
9. The primary structure of a protein is...Ch. 2 -
10. DNA ultimately contains the instructions for...Ch. 2 - If one strand of DNA has the sequence...Ch. 2 - Which of the following is true regarding the...Ch. 2 -
13. Which of the following is true regarding...Ch. 2 - Synthesis of proteins requires the input of...Ch. 2 - Prob. 15TYCh. 2 - Prob. 1AWKCh. 2 - Prob. 2AWKCh. 2 - Many people use cholesterol-lowering drugs to...Ch. 2 - Prob. 4AWKCh. 2 -
5. Coca-Cola is a very acidic drink; its pH is...
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- NaCl (a salt) can disrupt protein structure. This is true because a protein containing the amino acid glutamic acid can form ______ bonds with Na+. Select one: a. alpha-helix b. barry c. ionic d. peptide e. hydrogenarrow_forwardThe bonds that are important inthe secondary structure of a protein are a)hydrogen bonds b.peptide bonds c.hydrophobic interaction d.salt bridges e.disulfide bondsarrow_forwardProteins are synthesized by linking amino acids with ___________bonds.a. disulfideb. glycosidicc. peptided. esterarrow_forward
- A ________ is a portion of protein with a particular structure andfunction.a. peptide bondb. domainc. phospholipidd. waxe. monosaccharidearrow_forwardDisulfide bridges directly contribute to the ___________ structure of proteins, and form when two cysteine side chains become ___________. Select one: a. primary, reduced b. primary, oxidized c. secondary, reduced d. secondary, oxidized e. tertiary, oxidizedarrow_forwardThe coiling of the protein chain backbone into an alpha helix is referred to as the _____ structure Select one: a. secondary b. quaternary c. tertiary d. primaryarrow_forward
- Which of the following are involved in protein secondary structure? select one or more : a. van der waal forces b. Disulfide bridges c. Hydrogen bonds d. Peptide bondsarrow_forwardAt what level(s) of protein structure would you expect to find disulfide bridges? a. primary O b. secondary O c. tertiary d. quaternary e. only in b and carrow_forwardWhich of the following statement about quaternary structure of protein is correct? Select one: a. Quaternary structure is a force between different polypeptides. b. Hydrogen bond is an only force found in quaternary structure. c. Quaternary structure contains one polypeptide. d. Quaternary structure is an unfolded form of protein.arrow_forward
- Denaturation is the loss of protein function from structuralchange or chemical reaction. At what level of proteinstructure or through what chemical reaction does each ofthe following denaturation agents act?a. heatb. strong acidc. saturated salt solutiond. organic solvents (e.g., alcohol or chloroform)arrow_forwardWhich of the following statements is/are TRUE for globular proteins? A. sensitive to changes in pH & heat B. regular amino acid sequence C. soluble in water D. structural rolearrow_forwardDenaturation of a protein A. adds hydrogen bonds to the primary level of protein structure. B. breaks hydrogen bonds in the primary level of protein structure. C. adds hydrogen bonds to the secondary and tertiary levels of protein structure. D. breaks hydrogen bonds in the secondary and tertiary levels of protein structure.arrow_forward
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