CAMPBELL BIOLOGY MOD MASTERING (18 WEEK)
12th Edition
ISBN: 9780136920335
Author: Urry
Publisher: PEARSON
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Chapter 41, Problem 11TYU
WRITE ABOUT A THEME: ORGANIZATION Hair is largely made up of the protein keratin. In a short essay (100-150 words), explain why a shampoo containing protein cannot replace the protein in damaged hair.
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What could be the reason why hydroxylation of proline residues is critical to the structural integrity of collagen?
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The hydroxyl moities in Pro form ionic bonds (salt bridges) which stabilize collagen structure.
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The hydroxyl moities in Pro form peptide bonds which stabilize collagen structure.
The hydroxyl moities in Pro form H-bonds which stabilize collagen structure.
Both alpha keratin and collagen are fibrous proteins. However, the hydrogen bonding pattern is different between the helices of the respective proteins. What is the major difference?
Which of the following will contain plain Galactose?
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The correct answer is Keratan. Please explain
Chapter 41 Solutions
CAMPBELL BIOLOGY MOD MASTERING (18 WEEK)
Ch. 41.1 - An animal requires 20 amino acids to make...Ch. 41.1 - Prob. 2CCCh. 41.1 - WHAT IF? If a zoo animal eating ample food shows...Ch. 41.2 - Prob. 1CCCh. 41.2 - In what sense are nutrients from a recently...Ch. 41.2 - Prob. 3CCCh. 41.3 - Explain why a proton pump inhibitor, such as the...Ch. 41.3 - Prob. 2CCCh. 41.3 - Prob. 3CCCh. 41.4 - Prob. 1CC
Ch. 41.4 - What features of a mammal's digestive system make...Ch. 41.4 - WHAT IF? "Lactose-intolerant" people have a...Ch. 41.5 - Explain how people can become obese even if their...Ch. 41.5 - WHAT IF? Suppose you were studying two groups of...Ch. 41.5 - Prob. 3CCCh. 41 - Prob. 41.1CRCh. 41 - Propose an artificial diet that would eliminate...Ch. 41 - Prob. 41.3CRCh. 41 - How does human anatomy indicate that our primate...Ch. 41 - Prob. 41.5CRCh. 41 - Fat digestion yields fatty acids and glycerol....Ch. 41 - The mammalian trachea and esophagus both connect...Ch. 41 - Prob. 3TYUCh. 41 - Prob. 4TYUCh. 41 - Prob. 5TYUCh. 41 - After surgical removal of the gallbladder, a...Ch. 41 - If you were to jog 1 km a few hours after lunch,...Ch. 41 - DRAW IT Create a flowchart to summarize the events...Ch. 41 - EVOLUTION CONNECTION Lizards and snakes cannot...Ch. 41 - SCIENTIFIC INQUIRY In human populations of...Ch. 41 - WRITE ABOUT A THEME: ORGANIZATION Hair is largely...Ch. 41 - SYNTHESIZE YOUR KNOWLEDGE Hummingbirds are well...
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- Explain the changes that you observed in terms of change in protein structure at the molecular level of egg albumin Hint: Discuss what interactions/bonds are disrupted upon application of the treatment on the egg albumin during denaturation Heat Vinegar Rubbing alcoholarrow_forwardBriefly describe the primary structure of collagen, a- keratin and B-keratin.arrow_forwardWhich wool fiber properties would be changed if the fiber had β-keratin instead of α-keratin? Explain the effect of fineness of wool fiber on air permeability of woolen fabric. Compare the protein and cellulosic fibers in terms of strength, flexibility, acid / alkali response and thermal conductivity. Which parameters are considered when evaluating commercial importance of a natural fiber?arrow_forward
- Derivatives of which amino acid are critical for crosslinking of keratin fibers? Select one: a. Gly b. cystine c. hydroxyproline d. lysine e. Proarrow_forwardBoth a-keratin and collagen are fibrous proteins.however,the hydrogen bonding pattern is different between the helices of the respective proteins.what os the major difference?arrow_forwardThe alpha-keratin of hair is rich in the amino acid cysteine. The location of these cysteines in the protein chain is genetically determined. As a result of the location of the cysteines in the protein, a person may have curly, wavy, or straight hair. How can the location of cysteines in a-keratin result in these different styles of hair? Propose a hypothesis to explain how a “perm” causes straight hair to become curlyarrow_forward
- Compare and contrast structural features of collagen and α-keratin (OK to do this as a list or table comparing/contrasting 3-4 points, e.g. type of helices, noncovalent and covalent interactions between helices, favored residues). Can you please help?arrow_forwardHow were the hair different? How does eyebrow, eyelash and head hair are different?arrow_forwardName two types of soluble fiber and their sources.arrow_forward
- Which of the following is NOT a fat soluble vitammin? ve O C O A O Earrow_forwardSelect the molecules that contains sphingosine. Molecule C phosphatidylcholine Molecule B Molecule A sphingomyelins CH2 CH2 CH2 CH2 CH2 CH2 CH3 HO-CH-CH=CH CH2 CH2 CH2 CH₂ CH₂ CH2 O CH2 CH2 CH2 CH2 CH2 CH2 CH2 CH2 CH3 CH-NH-C-CH₂ CH₂ CH2 CH2 CH₂ CH₂ CH₂ CH2 CH2 O CH3 CH₂-O-P -O–CH2–CH2-N-CH3 CH3 O Molecule A _å_ CH₂ -CH2 CH2 CH2 CH2 CH2 CH2 CH2 CH2 CH3 O CH₂ CH₂ CH₂ CH2 CH2 CH2 CH₂ CH₂ CH-C-CH₂ CH2 CH2 CH2 CH2 CH2 CH2 CH₂ CH₂ CH₂ CH₂ CH=CH CH₂ CH₂ CH₂ CH3 O CH₂-O-P-O-CH₂-CH₂-NH3 0 Molecule B CH₂OH O CH3(CH2)15—C-NH-CH CH3(CH2)12-CH=CH CH2-O-HC CH-OH Molecule C 0 2-9-1 H OH -0-1 3-0-1 3-0-1 OH C Harrow_forwardWhich of the following best describes collagen? Select the correct responses): It is a sinistral super helix that is formed from three sinistral helices. It is a sinistral super helix that is formed from three dextral helices. • It is primarily made up of chiral and cyclic amino acids. It is primarily made up of chiral and acyclic amino acids. It is a dextral super helix that is formed from three sinistral helices. • It is primarily made up of achiral and cyclic amino acids. ]It is primarily made up of achiral and acyclic amino acids. • It is a dextral super helix that is formed from three dextral helices.arrow_forward
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